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CONTENTSDescription PageIntroduction ............................................................................................................... 1Advantages ............................................................................................................... 3Description ................................................................................................................ 6Control Units ............................................................................................................. 7Accessories ............................................................................................................. 23Switch ..................................................................................................................... 36Trip Curves ............................................................................................................. 37Wiring Diagrams ..................................................................................................... 42Circuit Breaker Dimensions .................................................................................... 46Appendix ................................................................................................................. 62
MASTERPACT ® Universal PowerCircuit Breaker
Class 631
1©1995 Square D—All Rights Reserved11/98
Standard Compliance
n UL489: MP08 to MP50 circuit breakers and their accessories are Listed under UL files E63335,E103955 and E113555
n UL1066/ANSI: MC08 to MC50 circuit breakers are UL Listed according to UL1066 (ANSI C37-13)under file E161835
n International Standards: the MASTERPACT® circuit breaker has been designed to meet all themajor standards including:
o IEC 947-2 and related standards such as VDE, BS, EN, etc.o JEC, JISnUL 1008: MP12, MP20 and MP30 circuit breakers are suitable for use in transfer switch
equipmentnMarine Applications:o Homologated by Bureau Veritaso Approved by Det Norske Veritas and Germanische Lloyd'so Listed by Lloyd's Register of Shippingo American Bureau of Shipping applicationo UL marine
High Short-time Current Rating: Up to 100 kA for 1 sec.
The exceptional short-time rating of 75,000 A in a 3000 A frame and 100,000 A in a 4000 A frameand above allows the circuit breakers to be fully selective up to their interrupting ratings.
100% Rated
The circuit breakers are designed for continuous operation at 100% of their current rating.
Other Performances
The UL 489 and UL1066 (ANSI C37-13) standard performance tests assure that the circuit breakerhas sufficient characteristics to be used in normal conditions. However, the circuit breaker exceeds,without additional costs, the UL standard 1,500 operations required in endurance. The heavy-dutymechanism and the contact design provide a mechanical endurance of 10,000 operations (approx.)without maintenance (see page 64).
Tropicalization
The standard moisture and fungus protection ensure normal operation under extreme ambientconditions. MASTERPACT circuit breakers comply with T2 tropicalization (IEC Standard 68-2-30);relative humidity 95% at 113°F (45°C) and 80% at 131°F (55°C) (hot, humid climate). Salt sprayresistance as per IEC 68-2-11.
Poles
The 4-pole version is an efficient solution to ground fault problems created by incorrectly groundedstandby generators and incorrect transfer switching systems. By isolating the neutral of multiplesources coupled together, 4-pole circuit breakers prevent ground faults from returning to the sourcevia unintended paths. Where unintended paths exist, ground fault sensing can become inaccurate orcreate nuisance tripping.
Introduction
Ampere Rating (A) 3-Pole 4-Pole
800 MP-MC MP-MC
1200 MP MP
1600 MP-MC MP-MC
2000 MP-MC MP-MC
2500 MP MP
3000 MP MP
3200 MC
4000 MP-MC MP (1)
5000 MP-MC MP (1)
6300 MP (1)
(1) Not UL Listed.
11/98©1995 Square D—All Rights Reserved2
Introduction
Ratings
Type Ampere Rating (A) Sensor Ratings (A)
MP/MC08 800 250–400–600–800
MP12 1200 800–1200
MP/MC16 1600 1200–1600
MP/MC20 2000 1600–2000
MP25 2500 2000–2500
MP30 3000 2500–3000
MC32 3200 2500–3200
MP/MC40 4000 2500–3000–4000
MP/MC50 5000 4000–5000
MP63 6300 5000–6300
Interrupting Ratings
UL489/NEMA AB1Type Rating (A) 480 Vac 600 Vac Short-time
Standard Interrupting Rating
MP08 H1 800 65 kA 65 kA 50 kA
MP12 H1 1200 65 kA 65 kA 50 kA
MP16 H1 1600 65 kA 65 kA 50 kA
MP20 H1 2000 75 kA 75 kA 75 kA
MP25 H1 2500 75 kA 75 kA 75 kA
MP30 H1 3000 75 kA 75 kA 75 kA
MP40 H1 4000 100 kA 100 kA 100 kA
MP50 H1 5000 100 kA 100 kA 100 kA
MP63 H1 6300 (1) 100 kA 100 kA 100 kA
High Interrupting Rating
MP08 H2 800 100 kA 65 kA 50 kA
MP12 H2 1200 100 kA 65 kA 50 kA
MP16 H2 1600 100 kA 65 kA 50 kA
MP20 H2 2000 100 kA 75 kA 75 kA
MP25 H2 2500 100 kA 75 kA 75 kA
MP30 H2 3000 100 kA 75 kA 75 kA
MP40 H2 4000 125 kA 100 kA 100 kA
MP50 H2 5000 125 kA 100 kA 100 kA
MP63 H2 6300 (1) 150 kA 100 kA 100 kA
(1) Not UL Listed.
UL1066/ANSI C37–13/NEMA SG3Type Rating (A) 508 V 635 V Short-time
Special Interrupting Rating
MC08 N1 800 50 kA 50 kA 42 kA
MC16 N1 1600 50 kA 50 kA 50 kA
Standard Interrupting Rating
MC08 H1 800 65 kA 65 kA 50 kA
MC16 H1 1600 65 kA 65 kA 50 kA
MC20 H1 2000 65 kA 65 kA 65 kA
MC32 H1 3200 65 kA 65 kA 65 kA
MC40 H1 4000 100 kA 100 kA 100 kA
MC50 H1 5000 100 kA 100 kA 100 kA
3©1995 Square D—All Rights Reserved11/98
Advantages
0631
3006
0631
3007
0631
3003
0631
3004
0631
3005
Drawout Circuit Breaker Design
n The drawout assembly mechanism allows the circuit breaker to be racked in four positions(connected, test, disconnected and withdrawn).
n The closing and opening push buttons, the racking handle and racking mechanism are accessiblethrough the front door cutout. Therefore the circuit breaker can be disconnected without openingthe door and accessing live parts. Safety shutters can be provided as an option for protection fromlive parts when the circuit breaker is removed.
Connected Position Test Position Disconnected Position
True Two-step Stored Energy Mechanism
The closing time is less than five cycles. The circuit breaker is operated via a stored-energymechanism which can be manually or motor charged. Closing and opening operations can be initiatedeither from the local push buttons on the circuit breaker front face or by remote control.O–C–O cycle is possible without recharging.
Designed for No Maintenance...
The circuit breaker has fewer parts (by a factor of at least five) than conventional circuit breakerswhile performing the same functions. This leads to greatly enhanced reliability and reduction inmaintenance. Under normal operating conditions, according to standards and controlled by tests, thecircuit breaker does not require maintenance.
…But Exceeds Standards with an Easy and Reduced Maintenance
It is easy to remove the arc chutes and visually inspect the contacts and wear indicator. The operationcounter (spring-charging motor option) can also indicate when inspections and possible maintenanceshould be done. After operating conditions exceeding those given by standards, it is possible toextend the circuit breaker life by:n Replacement of arc chutes and spring charging motor by the user.n Replacement of main contacts by an after sale service team.Note: See pages 62–63 for additional information.
Contact Good(Circuit Breaker Closed)
Contact Worn(Circuit Breaker Closed)
11/98©1995 Square D—All Rights Reserved4
Front Connection of Secondary Circuits
All accessory terminals are located on a connecting block which is accessible from the front evenwith the circuit breaker in the test or disconnected position. This is particularly useful for fieldinspection and modification.
0631
3010
0631
3009
Advantages
Field-installable Accessories
n As the installation develops and changes, the circuit breaker can develop and change with it.Most accessories are field-installable, without losing the UL Listing mark, without any adjustmentand with only the aid of a screwdriver.
n The uniform design of the circuit breaker line allows these accessories to be common for thewhole line.
0631
3008
Opush OFF
M08 H2masterpact
connected
test
disconnected
O OPENdischarged
I
push ON circuit breaker
3 pole600V 50/60Hz
frame size 2000A
suitable for continious operation
at 100% rating in a minimum cubical
space H17.5 by W21 by D14.1/4 inches
ventilation is not required
NEMAinterrupting rating
max RMS sym amps
Volts Amps
240 100K
480 100K
600 65K
IEC 957-2 690V 50/60Hz
interrupting rating
Icu 380/440V 75KA
660V 75KA
Icu 380/440V 75KA
660V 75KA
short time rating
Icw=75KA 0.5 sec.
push to reset
I
I1 I2 I3
90%
50%
20%
STR 58 U
Ir
90
105%Ir
.88.9 .92
.95
.981.8
.85
xIo
Im tm
3
4 56
8
101.52
xIo
.3
.4 .3
.1
.1.2
on I2t off
.2
0
Ir fault
tr
Im fault
tm
I
faultIh
th
t
i
test
+ S –
– T +
T
F
Ihth
400
500 600800
1000
1200250
320
A
.3
.4 .4
.2
.1.2
on I2t off
.3
.1
I
off2
xIn
Ir :
Im :
th :
I
IG LI
G
LLG
LIG
off
reset V
tr
60
120 240
480
1530
at 1,5Ir
4
6
8 12
17
22
Ic1Ic2
.86
.9 .93.95
.98
1.8
.85
.7
.8 .85
.95
.5.6
xIr
.9
1
R
xIr
test
Io=3000A
cat. no. 54775
for masterpact
with sensors In = 6000A
E63335UND. LAB. O List.
CIRCUIT BREAKER
Doles. Issue N° LM-879200000
63 40-50 32 08-30
Single Design up to 6300 A
All frame sizes have been designed with the same technology featuring identical depth and doorcutouts, and common control units and accessories.
5©1995 Square D—All Rights Reserved11/98
Advantages
0631
3011
Disconnecting through Door
The racking handle and racking mechanism are accessible through the front door cutout.Disconnecting the circuit breaker will therefore be possible without opening the door and givingaccess to live parts.
Isolation Function by Positive Indication of Contact Status
The mechanical indicator is truly representative of the status of all three main contacts.
Segregated Compartment
Once the front cover has been removed to provide access to the auxiliary compartment, the maincontacts remain fully isolated. Furthermore, interphase partitioning allows full insulation betweeneach pole even if the front cover has been removed.
Reinforced Insulation
Two insulation barriers separate the front of the circuit breaker from main circuits.
11/98©1995 Square D—All Rights Reserved6
Description
Description
1. Arc chamber and terminal covers2. Accessories and control unit front
connecting block3. Position carriage switches4. Opening coils5. Arc chute6. Spring charging motor7. Front cover8. Control unit9. Racking crank
10. Pull-out handgrip11. Retractable rails12. Handling handgrip13. Safety shutters
0631
3012
0631
3013
Opush OFF
MERLIN GERIN
MP20H1
masterpact
connected
test
disconnected
OOPEN
discharged
I
push ON circuit breaker
3 pole600V 50/60Hz
frame size 2000A
suitable for continious operation
at 100% rating in a minimum cubical
space H17.5 by W21 by D14.1/4 inches
ventilation is not required
interrupting rating
max RMS sym amps
Volts240480600
short time rating 75KA
Amps75K75K75K
IEC 957-2 690V 50/60Hz
interrupting rating
Icu 380/440V 75KA
660V 75KA
Icu 380/440V 75KA
660V 75KA
short time rating
Icw=75KA 0.5 sec.
E63335UND. LAB. O List.
CIRCUIT BREAKER
Doles. Issue N° LM-879200000
push to reset
I
I1 I2 I3
90%
50%
20%
STR 58 U
Ir
90
105%Ir
.88.9 .92
.95
.981.8
.85
xIo
Im tm
3
4 56
8
101.52
xIo
.3
.4 .3
.1
.1.2
on I2t off
.2
0
Ir fault
tr
Im fault
tm
I
faultIh
th
t
i
test
+ S –
– T +
T
F
Ihth
400
500 600800
1000
1200250
320
A
.3
.4 .4
.2
.1.2
on I2t off
.3
.1
I
off2
xIn
Ir :
Im :
th :
I
IG LI
G
LLG
LIG
off
reset V
tr
60
120 240
480
1530
at 1,5Ir
4
6
8 12
17
22
Ic1Ic2
.86
.9 .93.95
.98
1.8
.85
.7
.8 .85
.95
.5.6
xIr
.9
1
R
xIr
test
Io=3000A
cat. no. 54775
for masterpact
with sensors In = 6000A
11 12
2
3
4
5
6
9 8 710
1
Front View
1. Charging handle2. Manual opening push button3. Manual closing push button4. Stored energy mechanism status indicator
(charged or discharged)5. Main contact position indicator (open or
closed)6. Disconnected position locking (key
interlock)7. Disconnected position padlocking8. Drawout position indicator showing that the
circuit breaker is in the connected, test ordisconnected position
9. Racking crank storage10. Door escutcheon11. Fault indicator and reset button12. Open position locking (key interlock)
13
12
11
10
9
1 2 3
4
5
6
78
7©1995 Square D—All Rights Reserved11/98
The circuit breaker can be equipped with a microprocessor-based, electronic control unit whichprovides all the traditional protection of the universal power circuit breaker (long-time, short-time,instantaneous and ground-fault) plus other built-in functions:n RMS sensing (standard)n Alarm switch (standard)n Overcurrent trip switch (standard)n Interchangeable rating plugs (on STR28DP, STR38SP and STR58UP)n Thermal memory and I2t ramp (standard on STR 38-58 control unit)n Defeatable instantaneous (standard on STR 38-58 control unit)n Zone-selective interlocking for ground-fault and short-time (option)n Current and load meter (option)n Load-monitoring outputs (option)n Fault indicators (option)n Communication ability (option)
Control Units STR 18M STR 28D STR 38S STR 58U
Basic Features
Long-time (1) Setting Adjustable Adjustable Adjustable
Delay Fixed Fixed Adjustable
Short-time Pickup Adjustable Adjustable
Delay Adjustable Adjustable
Instantaneous Adjustable Adjustable Fixed (2) Adjustable (2)
Test Receptacle Standard Standard Standard
Additional Features (Options)
Ground-fault Protection (3) n n
Built-in Ammeter n n n
Fault Indicators n n
Segregated Alarm Switch n
Zone-selective Interlocking n
Load Monitoring n
Communication Outputs n
(1) Long-time pickup at 1.1 current setting.(2) Defeatable on N1 and H1 types.(3) Two types: residual sensing (T) or residual source ground return (W).
Control Units06
3130
14
11/98©1995 Square D—All Rights Reserved8
STR 28D Control Unit for General Application
1. Mechanical pop-out type fault indicator and reset button:n Indicates that a fault trip has occurredn Prevents closing of the circuit breaker after fault until reset
2. Ammeter (LCD digital display)3. Ammeter selector used to read:n Phase currents (1, 2, 3, N)n Or the phase with the highest load current (max.)
4. Load indication (bar graph in % of current setting)5. Sensor rating6. Rating plug (on STR 28DP)7. Long-time current setting8. Instantaneous pickup9. Local and remote pre-trip alarm:n LED on at 90% of current settingn LED flashing on overload (1)n Remote indication by static contact
10. Available spaces for setting identification11. Test receptacle
0631
3016
0631
3015
Overcurrent Protection—RMS Sensing
Long-time Current Setting STR 28DP: 0.8 to 1 x Rating Plug (Pickup at 1.1 x Setting)
STR 28D: 0.4 to 1 x Current Sensor (Pickup at 1.1 x Setting)
Max. Delay Fixed: 7.5 sec. at 6 x Current Setting
Rating Plug Current Sensor Plug Rating
250 A 250–200–150–125 A
400 A 400–300–250–200 A
600 A 600–500–400–300 A
800 A 800–600–500–400 A
1200 A 1200–1000–800–600 A
1600 A 1600–1200–1000–800 A
2000 A 2000–1600–1200–1000 A
2500 A 2500–2000–1600–1200 A
3000 A 3000–2500–2000–1600 A
3200 A 3200–3000–2500–2000–1600 A
4000 A 4000–3200–3000–2500–2000 A
5000 A 5000–4000–3200–3000–2500 A
6300 A 6300–6000–5000–4000–3200–3000 A
Instantaneous Pickup 1.5 to 10 x Current Setting
Built-in Ammeter (Optional)
Option I Values Displayed Phase 1, 2, 3, Max., Neutral Current
Accuracy ±1.5 % (2)
Bar Graph Indication Phase 1, 2, 3—10% Steps
Control Power Not Required (3)
Fault or Alarm Indicators
Not Discriminated Local Pop-out Type Indicator and LED Pre-trip Alarm
Remote Overcurrent Trip and Pre-trip Alarm Switches(see pp. 14–15)
(1) According to time-current curves: between 105% and 120% of current setting.(2) Total accuracy including current sensors: ±4.5%.(3) Control power not required for loads greater than 20% of current sensor. Required for load less than 20%
of current sensors if maximum demand memory requested (see diagram on p. 43).
I
t
Long-time Setting
Instantaneous
Note: Io: Rating plugIn: Sensor ratingIr: Long-time pickuptr: Long-time delayIm: Short-time pickup
push to reset
II1 I2 I3
90%
50%
20%
STR 28 D
90
105%Ir
.88.9 .92
.95
.981.8
.85
xIo
Im
34 5
6
8101.5
2
xIr
Ir
Im
t
i
test
+ –
Ir :
Im :
1
2
43
6Ir
7
8
910
11
5
Control Units
tm: Short-time delayI: Instantaneous pickupIh: Ground-fault pickupth: Ground-fault delay
9©1995 Square D—All Rights Reserved11/98
Control Units
STR 38S Control Unit for Selective Application
1. Mechanical pop-out type fault indicator and reset button:n Indicates that a fault trip has occurredn Prevents closure of the circuit breaker after fault until reset
2. Ammeter (LCD digital display)3. Ammeter selector used to read:n Phase currents (1, 2, 3, N, ground)n Or the phase with the highest load current (max.)
4. Load indication (bar graph in % of current setting)5. Sensor rating6. Local and remote pre-trip alarm:n LED on at 90% of current settingn LED flashing on overload (1)n Remote indication by static contact
7. Rating plug (on STR 38SP)8. Long-time current setting9. Short-time pickup
10. Short-time delay11. Instantaneous ON/OFF selector12. Available space for setting identification13. Ground-fault (option T) pickup14. Ground-fault (option T) time delay15. Local (option F) fault indicators consisting of built-in light emitting
diodes; fault indicators differentiate the three causes of tripping:overload, short circuit and ground fault, if any
16. Test receptacle17. Fault indicator saving battery (option PIL)18. Fault indicator reset or battery test button19. Fault indicator reactivating button (option PIL) (2)
0631
3018
0631
3017
push to reset
II1 I2 I3
90%
50%
20%
STR 38 S
Ir90
105%Ir
.88.9 .92
.95
.981.8
.85
xIo
Im tm
34 5
6
8101.5
2
xIr
.3
.4 .3
.1.1
.2
on I2t off
.2
0
Ir fault
tr
Im fault
tm
I
faultIh
th
t
i
test
+ –
– +
T
F
test
Ih th
400
500 600800
1000
1200250
320
A
.3
.4 .4
.2.1
.2
on I2t off
.3
.1
I
offmax.xIn
Ir :
Im :
th :
1
2
4
5
6789
10
1211
13
14
1516
1719
overcurrent
ground
3
18
I
t
Ground-faultPickup
Ground-faultDelay
Long-time Setting
Short-timePickup
Short-time Delay
Instantaneous
Overcurrent Protection—RMS sensing
Long-time Current Setting STR 38SP: 0.8 to 1 x Rating Plug (Pickup at 1.1 x Setting)
STR 38S: 0.4 to 1 x Current Sensor (Pickup at 1.1 x Setting)
Delay Fixed: 7.5 sec. at 6 x Current Setting
Thermal Memory as Standard
Rating Plug 4 to 6 Rating Plugs Available Per Sensor Rating: See STR 28D Control Unit, p. 8
Short-time Pickup 1.5 to 10 x Current Setting
Delay Bands 0–0.1–0.2–0.3–0.4 with I2t OFF
0.1–0.2–0.3 with I2t ON
Instantaneous Pickup High-set Fixed Type (3)—Defeatable on N1 and H1 Types
Ground-fault Protection (Option T or W) (4)
Pickup 0.1 x Current Sensor to 1200 A (5)
Delay Band 0.1–0.2–0.3–0.4 with I2t Ramp ON/OFF Switch
Fault Indicators (Option F)
Not Discriminated Local Mechanical Pop-out Type Indicator and LED Pre-trip Alarm
Remote Overcurrent Trip and Pre-trip Alarm Switches (see pp. 14–15)
Discriminated Local With Option F (see p. 14)
Built-in Ammeter (Option I)
Values Display Phase 1, 2, 3, Max., Neutral and Ground Current
Accuracy ±1.5% (6)
Bar Graph Indication Phases 1, 2, 3—10% steps
Control Power Not Required (7)
(1) According to time current curves: 105% to 120% of current setting.(2) With PIL option, fault indicator lights (15) will light up only when this button is pushed in.(3) See values on pp. 38–40.(4) Residual scheme (T). The maximum ground-fault pickup meets 1999 National Electrical Code paragraph
230-95 (a) (not exceeding 1200 A). Source Ground Return scheme (W) on request.(5) 0.1 minimum pickup requires 24 Vdc external power.(6) Total accuracy including current sensors: ±4.5%.(7) Control power not required for loads greater than 20% of current sensor. Required for loads less than
20% of current sensor if maximum demand memory requested (see diagram, p. 43).
11/98©1995 Square D—All Rights Reserved10
STR 58U Control Unit for Universal Application
1. Mechanical pop-out type fault indicator and reset button:n Indicates that a fault trip has occurredn Prevents closure of the circuit breaker after fault until reset
2. Switch selector for the type of fault to be remotely indicated and resetflat push button (see option FV, p. 15)
3. Ammeter (LCD digital display)4. Ammeter selector used to read:n Phase currents (1, 2, 3, N, ground)n Or the phase with the highest load current (max.)
5. Load indication (bar graph in % of current setting)6. Sensor rating7. Local and remote pre-trip alarm:n LED on at 90% of current settingn LED flashing on overload (according to time current curves: 105%
to 120% of current setting)n Remote indication by static contact
8. Rating plug (on STR 58UP)9. Long-time current setting
10. Long-time delay setting11. Short-time pickup12. Short-time delay13. Thermal memory min./max. selector14. Instantaneous pickup15. Ground-fault (option T or W) pickup16. Ground-fault (option T or W) time delay17. Available space for setting identification18. Load monitoring (option R) pickups (see p. 16)19. Test receptacle20. Fault indicator saving battery (option PIL)21. Local (option F) fault indicators consist of built-in light emitting diodes
which differentiate the three causes of tripping: overload, short circuitand ground fault, if any
22. Fault indicator reset or battery test button23. Fault indicator reactivating button (with PIL option, fault-indicator
lights (21) will only light up when this button is pushed in)
0631
3019
12
3
5
67891011
12
131415
1617
181920
push to reset I+T L+I
I
L+TL off
T
L+I+T
II1 I2 I3
90%
50%
20%
STR 58 U
Ir tr90
105
τtr
%Ir.88
.9 .92.95
.981.8
.85
xIo
60120 240
48015
30
at 1.5Ir
Im tm
34 5
6
8101.5
2
xIr
.3
.4 .3
.1.1
.2
on I2t off
.2
0
Ir fault
tr
Im fault
tm
I
faultIh
th
t
i
test
+ –
– +
T
R
F
test
Ih 1200A Max th
400500 600
800
10001200250
320
A
.3
.4 .4
.2.1
.2
on I2t off
.3
.1
I
812 14
19
22Max.2
4
xIn
Ic1 Ic2
.86.9 .93
.95
.981.8
.85
xIr
.7.8 .85
.95.5
.6
.9
1xIr
V
Ir :
Im :
th :
min.norm
overcurrent
ground
reset V
4
21
22
23
Control Units
11©1995 Square D—All Rights Reserved11/98
Control Units
Overcurrent Protection—RMS Sensing
Long-time Current Setting STR 58UP: 0.8 to 1 x Rating Plug (Pickup at 1.1 x Setting)
STR 58: 0.4 to 1 x Current Sensor (Pickup at 1.1 x Setting)
Delay Bands 0.94–1.88–3.75–7.50–15–30s at 6 x Current Setting
Thermal Memory as Standard with Min./Max. Selector
Rating Plug Current Sensor Plug Rating
250 A 250–200–150–125 A
400 A 400–300–250–200 A
600 A 600–500–400–300 A
800 A 800–600–500–400 A
1200 A 1200–1000–800–600 A
1600 A 1600–1200–1000–800 A
2000 A 2000–1600–1200–1000 A
2500 A 2500–2000–1600–1200 A
3000 A 3000–2500–2000–1600 A
3200 A 3200–3000–2500–2000–1600 A
4000 A 4000–3200–3000–2500–2000 A
5000 A 5000–4000–3200–3000–2500 A
6300 A 6300–6000–5000–4000–3200–3000 A
Short-time Pickup 1.5 to 10 x Current Setting
Delay bands 0–0.1–0.2–0.3–0.4 with I2t OFF
0.1–0.2–0.3 with I2t ON
Zone-selective Interlocking with Option Z (see p. 13)
Instantaneous Pickup Adjustable from 2 to Max. Value (1); Defeatable on N1 andH1 Types
Ground-fault Protection (Option T or W) (2)
Pickup Delay Band 0.1 x Current Sensor to 1200 A (3)
0.1–0.2–0.3–0.4 with I2t Ramp ON/OFF Switch
Zone-selective Interlocking with Option Z (see p. 13)
Fault Indicators (Option F)
Not Discriminated Local Mechanical Pop-out Type Indicator and LED Pre-trip Alarm
Remote Overcurrent Trip and Pre-trip Alarm Switches (see pp. 14–15)
Discriminated Local With Option F (see p. 14)
Remote With Option FV (see p. 15)
Built-in Ammeter (Option I)
Values Display Phase 1, 2, 3, Max., Neutral and Ground Current
Accuracy ±1.5% (4)
Bar Graph Indication Phase 1, 2, 3—10% Steps
Control Power Not Required (5)
Load Monitoring (Option R)
Inverse Time Alarm Pickups Ic1 = 0.8 to 1 x Current Setting
Ic2 = 0.5 to 1 x Current Setting
Time delay See Curve, p. 41
Outputs for Communication through DIGIPACT ® System (Option C)
Transmitted Values Entire Settings of the Trip Unit
Circuit Breaker Status: Open, Tripped, Closed
Alarms: Overload, Type of Fault, Internal Watchdog (6)
Ammeter Values: Phase, Neutral, Ground, Max. Currents
(1) See values on pp. 38–40.(2) Residual scheme (T). The maximum ground-fault pickup meets 1999 National Electrical Code paragraph
230-95 (a) (not exceeding 1200 A). Source Ground Return scheme (W) on request.(3) 0.2 minimum pickup only with external power.(4) Total accuracy including current sensors: ± 4.5%.(5) Control power not required for loads greater than 20% of current sensors. Required for loads less than
20% of current sensor if maximum demand memory requested (see diagram, p. 43).(6) Internal watchdog: Control unit internal temperature.
I
t
Long-time Pickup
Instantaneous Pickup
Short-time Pickup
Ground-faultPickup
Ground-faultDelay
Long-time Delay
Short-time Pickup
0631
3020
11/98©1995 Square D—All Rights Reserved12
Control Units
The thermal memory function remembers and integrates the thermal heating caused by each pickupsetting overrun. Before tripping, the integrated heating value will reduce the associated time delayand, therefore, the reaction of the control unit will be closer to the real heating of the power networksystem. After tripping, the memory will also reduce the time delay when closing the circuit breakeron fault.
HAZARD OF ELECTRICAL SHOCK, BURNOR EXPLOSION.
Use "min" position for emergency only whenclosing on fault is absolutely necessary.
Failure to observe these precautions willcause death, personal injury or electricalshock.
DANGER
STR Trip Units
The STR 38S and STR 58U trip units incorporate the thermal memory as standard:n Before tripping on long-time and ground-fault protection (if provided)n After tripping on long-time protection only, adjustable min./max. position for the STR 58U trip unit
is standardThe control unit measures the internal temperature rise of the circuit breaker by thermal resistors. Thecooling time constant of the memory is not fixed, but depends on the over-temperature condition.
0631
3183
0631
3184
0631
3185
0631
3186
STR Trip Unit withThermal Memory
Thermal Memory
Purpose
The thermal memory function allows an optimization of cables or bus bar protection in case of lowamplitude repetitive faults. Such faults can be due to repetitive motor startings, fluctuating load orsubsequent closing after a fault.
Traditional electronic protection has no effect when facing such repetitive faults because theduration of each overload above the pickup setting is too short to achieve effective tripping.Nevertheless, each overload involves a temperature rise in the installation, the cumulative effect ofwhich could lead to overheating of the system.
Principle
tr
push to reset
I1 I2 I390%
50%
20%
STR 58 U
Ir
xIo at 1.5IrIm tm
xIo
i
test
T
R
F
test
Ih th
xIn
I
xIn
Ic1 Ic2
xIr xIr
xIn
t
0631
3182
STR Trip Unit withoutThermal Memory
t
I
Pickup Setting
t
Temperature
t
I2t
Trip Level
t
I2t
Trip Level
13©1995 Square D—All Rights Reserved11/98
Neutral Sensor
Ground-fault protection may be applied on3Ø4W or 3Ø3W circuits. On 3Ø4W circuits anexternal neutral sensor must be used. Thisneutral current sensor must have the sameampere rating as the circuit breaker sensor.
0631
3023
Note: #18 to #14 AWG cables, max. length 90 ft./30m.
0631
3021
T1 T2
S1 S2
Neutral
Ground-faultNeutral CTs
T1
T2
S1
S2
Main Circuit Breaker
0631
3022
Zone-selective Interlocking (ZSI)
Option Z on the STR58U control unit providesselective interlocking on short time or groundfault. A pilot wire links several trip units in thedistribution network, as shown in the oppositefigure. In the event of a fault, the trip unit willrespond to the preset delay only if receiving asignal from the downstream unit. If not receivinga signal, the tripping will be instantaneous.Therefore, the fault is cleared instantaneouslyby the nearest circuit breaker: the thermalstresses (I2t) in the network are minimized,without any effect on the correct time-delaycoordination in the installation.
Fault 1
Circuit breaker A will clear the faultinstantaneously, regardless of its time-delaysetting.
Fault 2
Circuit breaker B will inform upstream circuitbreaker A that it is clearing the fault and willprevent it from tripping instantaneously. Circuitbreaker A will trip at the end of its time delaysetting if the fault is not cleared during this time.
Note:n Drawout circuit breaker terminals are
delivered with "in" terminals jumpered.Remove the jumper when interlocking with adownstream circuit breaker.
n The MASTERPACT circuit breaker may alsobe interlocked with COMPACT® NS and CKtype molded case circuit breakers with ZSIoption.
n Do not ground ZSI wiring.
Cable Size #18–#14 AWG/1.5mm2
Max. Length 90 ft./30 m
Wiring Twisted in Pairs One Turn per 4 in./10 cm
No. of Circuit Breakers Upstream: 2
Downstream: No Limit
Control Units
A
Out
In In In
Z12Z11Z22Z21
OutIn
Out
In
2
1
Z12Z11Z22Z21
Z12Z11Z22Z21
Z12Z11Z22Z21
Z12Z11Z22Z21
Z12Z11Z22Z21
Out
In
Out OutB
11/98©1995 Square D—All Rights Reserved14
Control Units
Fault Indicator (F)
In addition to the mechanical fault indicator, this indicator differentiates the three causes of tripping:overload, short circuit or ground fault, if any. Three light-emitting diodes indicate separately long-time, short-time/ instantaneous and ground-fault trip. A flat push button allows resetting of theindicator after tripping. A separate power supply is required to maintain the indication after trippingof the circuit breaker. Two different possibilities are offered:n Connecting a reliable 24 Vdc control voltage on F1-F2. Auxiliary power module (AD) is used for
other voltages. When the control source is considered as unreliable, a battery pack (BAT) is tobe added to an AD power module.
n From a built-in battery module. When no external control source is available, a built-in batterymodule may be ordered (option PIL). This module integrates battery testing and indicatorreactivating buttons.
Configuration with ReliableControl Voltage
Configuration withInterruptible Control Voltage
0631
3025 24 Vdc
1W
+
F1 F2
0631
3026
0631
3027
+
F1 F2
AD (1)
F1 F2
+
AD (1)
BAT
(1) AC: 120 V, 60 HzDC: 24–48–125 Vdc
Alarm Indicator Pre-trip Alarm Switch (ALR)
Delivered as standard with control unit. The alarm indicator is a fixed, front face light-emitting diodewhich operates as follows:n Fixed when the current exceeds 90% of the current setting.n Flashing on overload: according to time-current curves, 105% to 120% of current setting.The pre-trip alarm switch is a static contact which closes when in the overload zone, up to thetripping of the circuit breaker. This contact can be used for ultimate load shedding, alarm beforetripping, etc.
Output Characteristics 0.1 A/240 Vac (Optical Triac)
Power Supply Not Required
0631
3024
Ih
xIn
xIn
Ic1
push to reset
I1 I2 I390%
50%
20%
STR 58 U
Ir tr
xIo at 1.5IrIm tm
xIo
test
T
R
th
I
Ic2
xIr xIr
t
i
F
test
0631
3028
xIn
i R
push to reset
I1 I2 I390%
50%
20%
STR 58 U
t
test
F
test
I
xIr xIr
TIh th
xInIc1 Ic2
Ir tr
xIo at 1.5IrIm tm
xIo
ALR
15©1995 Square D—All Rights Reserved11/98
Control Units
Overcurrent Trip Switch (SDE)
Delivered standard with control unit. In addition to the fault trip indicator/reset button, one SPDTswitch provides alarm/lockout information. This SPDT switch is operated only when the circuitbreaker is tripped by the control unit. When the circuit breaker is reset, the "a" switch (alarm) isopen and the "b" switch (lockout) is closed.
Output Characteristics SPDT 10 A/240 Vac
Power Supply Not Required
0631
3031
82 84
81
SDE
Fault
V2
V1
V
Fault 0631
3032
C2
C1
RemoteOpen
MX
V2
V1
V
Fault
0631
3029
Segregated Trip Switch (FV)
This switch works exactly as the standard overcurrent trip switch (SDE) except that a commutatoron the front face is used to choose the type of fault which will operate the contact: overload, short-circuit, ground-fault, or any combination of these types. This option can be used in addition to theSDE switch for remote signalization of particular types of faults. A flat push button allows resetting ofthe indicator after tripping.
Output Characteristics 5 A/240 Vac
Power Supply Required
Wired in parallel with the remote opening button which operates the shunt trip, the option FVcontact provides an electrical interlock which prevents the circuit breaker from being closed after thepre-selected type of faults: for example the circuit breaker will be able to be remotely closed afteroverload, but not after short circuit.
0631
3030
Ih
xIn
xIn
Ic1
I1 I2 I390%
50%
20%
STR 58 U
Ir tr
xIo at 1.5IrIm tm
xIo
test
T
R
th
I
Ic2
xIr xIr
t
i
push to reset
F
test
V
11/98©1995 Square D—All Rights Reserved16
Control Units
Test Kits
Every control unit is equipped with a test receptacle that can be used with a test kit. Testsperformed by test kits are only functional tests designed to electrically test the operating integrity ofthe control unit, the flux transfer device and the mechanical operation of the circuit breaker. Testsare not designed to calibrate the circuit breaker. Calibration can only be done at the factory.
0631
3035
0631
3034
Load monitoring (R)
Option R provides two independent static contacts which operate when the current exceedsadjustable pickup limits:n When the current exceeds the limit Ic1 (or Ic2), the contact C-R1 (or C-R2) closes following an
inverse time characteristic A.n When the current drops below the limit Ic1 (or Ic2), the contact C-R1 (or C-R2) opens with
constant time delay (10 seconds) B.These contacts can be used for load shedding, alarms, indications, etc.
Voltage 240 Vac max.
Outputs 0.1 A triac
0631
3036
xIn
i R
push to reset
I1 I2 I390%
50%
20%
STR 58 U
Ir tr
xIo at 1.5IrIm tm
xIot
test
F
test
I
xIr xIr
TIh th
xInIc1 Ic2
0631
3033
Mini Test Kit
Calibration Test Kit
I
t
Long-time
BA
17©1995 Square D—All Rights Reserved11/98
Control Units
Communication
MASTERPACT circuit breakers can be easily connected to a supervising personal computer usingthe DIGIPACT® system. The following four functions can thus be provided:n Indication:o Status of the circuit breaker (on, off or tripped; connected or disconnected)o Causes of tripping (overload, short circuit or ground fault)n Monitoring:o Operation of circuit breaker (open, closed or reset)o Resetting a molded case circuit breaker (COMPACT NS and CK)n Management:o Control unit settingso Pre-trip alarmo Load monitoring statuso Control unit internal temperature alarmo Number of operation cycles performed by the circuit breakern Metering:o RMS value of the current in three phases
0631
3037
pulsar SVMERLIN GERIN
N∞1N∞1
1 3
OK
error
com
24V
com
error
JBus
BBus DIGIPACT DC150 Data Concentrator
SC150 Indication andControl Interface
SC150 Indication andControl Interface
MASTERPACT Circuit Breakerwith STR 58U Trip Unit and Communications Option
MASTERPACT Circuit Breakerwith STR 58U Trip Unit and Communications Option
COMPACT NS Circuit Breakerwith Communications-typeAuxiliary Switches, Motor Operator and Carriage Switches
pushto
trip
push
push
Communication with Supervision,Personal Computer
®
POWERLOGIC Circuit Monitor
® POWERLOGIC Power Meter
MODBUS /JBUS
Internal Bus
MERLINGERIN
multi 9
ATB1s
ATB MULTI 9 Interfacefor C60 with Motor Operator
®
11/98©1995 Square D—All Rights Reserved18
Control Units
SC150 Indication and Control Interface
Function
The SC150 indication and control interface is used to:n Transmit to the DC150 data concentrator:o Status information (on, off, tripped, tripped due to electrical fault, tripped due to ground fault)
for COMPACT CK and MASTERPACT circuit breakers or any other power circuit actuatoro The connected or disconnected status of withdrawable COMPACT CK and MASTERPACT circuit
breakerso The status of any external contactn Receive commands transmitted by a personal computer or programmable logic controller (PLC)
via the DC150 data concentrator (on, off and reset of the COMPACT CK and MASTERPACTcircuit breakers or any other power circuit actuator)
n Receive the information transmitted by the communications option on electronic control units(STR43, STR53, STR55 and STR58) installed in COMPACT NS, COMPACT CK andMASTERPACT circuit breakers:
o Trip-unit settingso The RMS value of the current in the three phases and the neutralo Current overloadso The causes of tripping (overloads, short circuits or ground fault)n Count the number of cycles carried out by the device
The SC150 interface is connected to:n The DC150 data connectorn The auxiliary switches (OF, SD, SDE, SDV, CE, CD) on the circuit breaker with which the interface
is associatedn The motor operator for execution of the on, off and reset commandsn The communications outputs of the STR43, STR53, STR55 and STR58 control units installed in
COMPACT NS, COMPACT CK and MASTERPACT circuit breakersA non-assigned digital input is available for other use. The SC150 interface is associated with asingle circuit breaker.
Important: The SC150 interface is used with COMPACT NS circuit breakers to:n Remote to the user the information supplied by the communications option on STR43 and STR53
control unitsn Actuate non-communicating motor operatorsn Count the number of cycles carried out by the circuit breaker
Note: When associated with the SC150 interface, COMPACT NS circuit breakers are equipped withstandard auxiliary switches and motor operators. The SC150 indication and control interface is notrequired with COMPACT NS circuit breakers equipped with communication-type auxiliary switchesor a communication-type motor operator.
Information or Function Managed by the SC150 Indication and Control InterfaceInformation Transmitted or Devices Associated with the SC150 InterfaceFunction Carried Out
Display Device Status: Circuit Breaker or Other Power-circuit Actuatorn On, Off + Standard OF Auxiliary Switchesn Tripped + Standard SD Auxiliary Switches (COMPACT Circuit Breakers)n Tripped Due to Electrical Fault + Standard SDE Auxiliary Switchesn Tripped Due to Ground Fault + SDV Auxiliary Switches (COMPACT NS) or Output Contact of a Ground-fault Relayn Connected or Disconnected Position + Standard CE and CD Auxiliary Switches
Remotely Control a Device (On, Off or Reset) COMPACT or MASTERPACT Circuit Breaker Equipped with Standard Motor Operator
Count the Number of Operating Cycles As Above
Display the Cause of Tripping and the COMPACT or MASTERPACT Circuit Breaker Equipped with STR43, STR53, STR55Trip Unit Settings (Settings and Time Delays) or STR58 Electronic Trip Unit with Communications Option (COM)
Trip an Alarm for Long-time Fault As Above
Display the Value of the Current for Each Phase As Above
Display Internal Temperature of Switchboard PT100 Probe –4 to 212°F (–20 to 100°C)
0631
3038
19©1995 Square D—All Rights Reserved11/98
Control Units
SC150 Indication and Control Interface (continued)
Technical DataDigital Inputs (24 V, Self-powered by the SC150 Interface)
O Auxiliary Switch One Input
F Auxiliary Switch One Input
SD Auxiliary Switch (Tripping) One Input
SDE Auxiliary Switch (Tripping Due to Electrical Fault) One Input
CE Auxiliary Switch One Input
CD Auxiliary Switch One Input
SDV Auxiliary Switch (Tripping Due to Ground Fault) One Input
Other Uses One Unassigned Input
Electrical Characteristics
Voltage (Supplied by SC150) 24 Vdc
Current (Supplied by SC150) 120 mA dc
Resistance in On-state < 30 mΩ
Resistance in Off-state > 10000 MΩ
Control Outputs
Opening One N.O. and N.C. Control Terminal
Closing One N.O. Control Terminal
Reset One N.O. Control TerminalNote: The opening, closing and reset control signals delivered by
the SC150 interface are of the impulse type. The pulseduration is one second for the closing signal and twoseconds for the opening and reset signals.
Voltage 100–440 Vac/24–250 Vdc
Interrupting Rating AC 2500 VA
DC 300 W Continuous/500 W for Two Seconds
Utilization Category AC15/DC13 as Defined by IEC 947-5
Operating Temperature Range –13 to 158°F (–25 to 70°C)
Storage Temperature Range –67 to 185°F (–55°C to 85°C)
Damp Heat Not in Operation (IEC 68-2-30) 6 cycles 77°F (25°C)/131°F (55°C)/RH 95%
Damp Heat in Operation (IEC 68-2-56) 2 days 86°F (30°C)/RH 93%
Salt Mist (IEC 68-2-52) Kb Test, Severity Level 2
Electromagnetic Compatibility Electrostatic Discharges Level 3(IEC 1000-4-2)
Radiated Susceptibility Level 3(IEC 1000-4-3)
Low-energy Conducted Level 4Susceptibility (IEC 1000-4-4)
High-energy Conducted Level 4Susceptibility (IEC 1000-4-5)
Conducted and Radiated Class AEmissions (EN 50081-1)
Dimensions 2 x 4 x 6.5 in. (50 x 105 x 165 mm)
Weight 2.5 lb. (1 kg)
Degree of Protection (as Per IEC 529) Front Face IP30
Other Faces IP30
Connections IP20
Vibrations (Lloyd’s 1996) Fc Test 5–13.2 Hz: .04 in. (1 mm)
13.2–100 Hz: .03 oz. (0.7 g)
Wiring Diagram
See p. 44
Dimensions
See pp. 61
11/98©1995 Square D—All Rights Reserved20
Control Units
DC150 Data Concentrator
Function
The DC150 data concentrator is used to:n Centralize all the information supplied by the various communicating devices:o Auxiliary switches and motor operatoro SC150 indication and control interfacen Make information available to a personal computer or programmable logic controller (PLC) via the
MODBUS/JBUS protocoln Log status changes and tripping of the communicating circuit breakers in order to provide the
user with a list of time-stamped eventsn Supply the 24 V and 15 V power required by the communicating devices and the internal busn Carry out addressing for the communicating devicesEach DC150 data concentrator can be connected to a maximum of 48 instrumented outgoing orincoming circuits.
0631
3039
Information or Function Managed by the DC150 Data ConcentratorInformation Transmitted or Devices Required to Display the Information orFunction Carried Out Carry Out the Function
Display Device Status: Circuit Breaker or Other Power-circuit Actuator
n On, Off, Tripped, Tripped Due to Electrical Fault, o COMPACT NS Circuit Breaker + Communicating Auxiliary SwitchesConnected, Disconnected o COMPACT/MASTERPACT Circuit Breaker + SC150 Indication and Control
Interfaceo COMPACT NS Circuit Breaker + Communicating Auxiliary Switcheso MULTI 9 Control Device + ATB Interface
n Tripped Due to Ground Fault o COMPACT NS Circuit Breaker + Vigi or Ground-fault Relay + SC150Indication and Control Interface
Remotely Operate a Circuit Breaker n COMPACT NS Circuit Breaker + Communicating Motor Operator(On, Off or Reset) n COMPACT/MASTERPACT Circuit Breaker + SC150 Indication and Control
Interfacen MULTI 9 Control Device + ATB Interface
Inhibit Reset Following Tripping Due As Aboveto Electrical Fault
Select Operating Mode of Motor As Above + CLS150 Indication and Local Control ModuleOperators (Local or Remote)
Measure Currents (Phases and Neutral) COMPACT/MASTERPACT Circuit Breaker Equipped with Electronic Control UnitComprising Communications Option + SC150 Indication and Control Interface
Count Number of Operating Cycles SC150 Indication and Control Interface
Display Causes of Tripping COMPACT/MASTERPACT Circuit Breaker Equipped with Electronic Control UnitComprising Communications Option + SC150 Indication and Control Interface
Display Trip Alarm for Long-time Fault As Above
Display Trip Unit Settings As Above(Thresholds and Time Delay)
Junction Block
0631
3041
Internal Bus Cable
0631
3042
RS232/RS485 Converter
0631
3040
AccessoriesConnection Cable for Internal Bus Cat. No. 50779 65 ft. (20 m)
or 50780 330 ft. (100 m)
Junction Block for Internal Bus Cat. No. 50778
RS485/RS232 Conversion Unit Cat. No. 50786
Connection to Personal Computer An RS232/RS485 converter is required for connection to a personal computerequipped with an RS232 output to the MODBUS/RS485 bus.
Connector
0631
3116
21©1995 Square D—All Rights Reserved11/98
Control Units
Description
1. LED indicating that address is correct2. LED indicating that address is incorrect3. LED indicating presence of 24 V power4. LED indicating communication on
internal bus5. LED indicating MODBUS/JBUS
communication6. LED indicating MODBUS/JBUS error7. MODBUS/JBUS speed setting
8-9. Coding wheels for JBUS address10. JBUS connector11. Power supply connector12. Internal bus connector13. Confirmation button
14-15. Keys for DIGIPACT module addresses16. Address display
0631
3043
Technical DataElectrical Characteristics
Voltage 110–240 Vac/115–125 Vdc
Tolerance +10%–15%
Operating Temperature Range –13 to 158°F (–25 to 70°C)
Storage Temperature Range –67 to 158°F (–55 to + 70°C)
Electromagnetic Compatibility Electrostatic Discharges Level 3(IEC 1000-4-2)
Radiated Susceptibility Level 3(IEC 1000-4-3)
Low-energy Conducted Level 4Susceptibility (IEC 1000-4-4)
High-energy Conducted Level 4Susceptibility (IEC 1000-4-5)
Conducted and Radiated Class AEmissions (EN 50081-1)
Protocol MODBUS/JBUS (Slave)
Speed 9600 or 19200 Baud
Data Format Eight Bits, No Parity, One Stop
Physical Link RS485 (2-Wire or 4-Wire)
Implemented MODBUS/JBUS Protocol Functions Read N Consecutive Bits Function 1 or 2
Read N Words Function 3 or 4
Write One Bit Function 5
Write One Word Function 6
Write N Bits Function 15
Write N Words Function 16
Weight 4 lb. (1.5 kg)
Degree of Protection (as Per IEC 529) IP30
IP20 (Connections)
Wiring Diagrams
See p. 45
Dimensions
See p. 61
MERLIN GERIN
DC150Digipact
0
8
43
2 1
CD
EF
5
6 7
B
A9
0
8
43
2 1
CD
EF
5
6 7
B
A9
OK
error
com
error
com
24V
N°1 N°2
N°1
N°2
960019200
BBus JBus
6 53 42 1
7
8
9
1014
15
13
16
12 11
DC150 Data Concentrator (continued)
11/98©1995 Square D—All Rights Reserved22
Control Units
Sizing of the DIGIPACT Internal Bus
Sizing of the DIGIPACT internal bus depends on two factors:n The number of devices on the busn The length of the bus
Number of Devices
As on any communications network, the number of devices that may be connected on theDIGIPACT internal bus is limited. The maximum number of devices is calculated in terms of"communication points." Each type of device represents a number of points indicated in the tablebelow. The total number of points for the various devices connected to a single bus must not exceed100. If the required devices represent more than 100 points, simply add a second DIGIPACTinternal bus with a second DC150 data concentrator. The same sizing rules apply to the second busas well.
Communicating Device Number of Points
DC150 Data Concentrator 4
Communicating Auxiliary Switches OF, SD, SDE for COMPACT® NS Circuit Breakers 2
Communicating Motor Operator and Auxiliary Switches for COMPACT NS Circuit Breakers 2
Communicating Auxiliary Switches CE and CD for COMPACT NS Circuit Breakers 0
SC150 Indication and Control Interface 4
CLS150 Indication and Local Control Module Associated with:n Communicating Auxiliary Switches 0n Communicating Motor Operator and Auxiliary Switches 0n SC150 Indication and Control Interface 0
PM150 Power Meter 4
ATB MULTI 9 Interface 2
Length of Bus
The table below indicates the cross-sectional area of the cable that must be used depending on thetotal length of the bus.Cross-sectional Area Maximum Length of Bus
0.03 in.2 (0.75 mm2) 660 ft. (200 m)
0.06 in.2 (1.5 mm2) 1310 ft. (400 m)
0.1 in.2 (2.5 mm2) 2300 ft. (700 m)
The total resistance of the two wires for the bus must be less than 12 ohms. If the bus is too long,simply:n Increase the cross-sectional area of the cable.n Create two shorter buses for the installation (in this case, a second DC150 data concentrator
is required).
23©1995 Square D—All Rights Reserved11/98
Additional Connections (BS):
Single connection only is allowed in the terminal block. Multiple connections have to be made byadding extra terminals in the block located on the stationary assembly. The BS option consists offive additional terminals.
Connection:
Accessory terminals are maintenance-free and may be connected by standard #18 to #14 AWGcopper wires. Cable strip length: 3/8 in. (10 mm).
0631
3046
CONNECTED
TEST
DISCONNECTED
DisconnectedPositionSwitches
TerminalBlock
ConnectedPositionSwitches
AuxiliarySwitches
OvercurrentTrip Switch
Opening Coil
Closing Coil
Heavy UsageAuxiliarySwitches
Ready toClose Switch
SpringChargingMotor
push to reset
I+T L+I
I
L+TL off
T
L+I+T
I
I1 I2 I3
90%
50%
20%
STR 58 U
Irtr
90
105
τ tr
%Ir
.88.9 .92
.95
.981.8
.85
xIo
60120 240
480
1530
at 1.5Ir
Imtm
3
4 56
8
101.52
xIr
.3
.4 .3
.1
.1.2
on I2t off
.2
0
Ir fault
tr
Im fault
tm
I
faultIh
th
t
i
test
+ –
– +
T
R
Ftest
Ih 1200A Max th
400500 600
800
1000
1200250
320
A
.3
.4 .4
.2
.1.2
on I2t off
.3
.1
I
8
12 1419
22
Max.2
4
xIn
Ic1 Ic2
.86
.9 .93.95
.98
1.8.85
xIr
.7.8 .85
.95
.5.6
.9
1xIr
V
Ir :
Im :
th :
min.norm
overcurrent
ground
reset V
Accessories
Secondary Disconnects
Electrical accessories are UL Listed for field installation per UL file E113554. They are provided withterminals and located on secondary disconnecting blocks above the circuit breaker:n Fixed-mounted: By one or two connecting plugs (provided).n Drawout-mounted: To terminal block A located in the front of the stationary assembly for easy
access. (This terminal block is then wired to another connection block B that operatesautomatically to isolate the internal accessories when the circuit breaker is in the disconnectedposition.)
0631
3044
0631
3010
Fixed-mounted Circuit Breaker Drawout-mounted Circuit Breaker
A
B
Location
11/98©1995 Square D—All Rights Reserved24
Accessories06
3130
47
The MASTERPACT circuit breaker is equipped with a true two-step stored energy mechanism whichensures fast opening and closing operations and complete open-close-open sequence withoutrecharging the mechanism. The MASTERPACT circuit breaker has manual actuators that include acharging handle and push-to-open and push-to-close buttons. In addition, remote operation ispossible with the following field-installable accessories:n Spring charging motor (MCH)n Closing release (XF)n Undervoltage trip device (MN) or shunt trip (MX) for openingThe manual operating mechanism can still be used in an emergency. The addition of the electricaloperating mechanism does not alter circuit breaker dimensions.
Spring-charging Motor (MCH)
The spring-charging motor automatically charges the stored energy mechanism (when the circuitbreaker closes) making O–C–O cycles possible without recharging. Opening and closing operationsare instantaneous.
Control Voltage (V) 60 Hz 120–240
DC 24–48–125
Consumption AC 180 VA
DC 180 W
Inrush Current 2 to 3 x In for 0.1 sec.
Charging Time 3 to 4 sec.
0631
3048
262 B4
B1
CH
SpringCharged
M
Operation Counter (CDM)
With spring-charging motor option only. The operation counter is read from the front and gives thetotal number of circuit breaker operating cycles.
Spring-charged Switch
This type "b" switch is closed when the spring is charged. It comes standard with the springcharging motor and is provided with a common terminal.
Max. Current (A)
60 Hz 240 V 10
DC 125 V 0.5
250 V 0.25
25©1995 Square D—All Rights Reserved11/98
Accessories
Closing Coil (XF)
This device releases the circuit breaker closing mechanism when the spring is charged. The closingcoil is rated for continuous duty. The closing release is supplied on request and can be fitted evenon a manual operating mechanism.
A4
A1
RemoteClose
XF
0631
3050
Anti-pumping Function
When the closing coil (XF) is permanently energized, the circuit breaker remains in the openposition after it has been opened, either by manual or electrical operation. The circuit breaker canonly be closed if the closing coil is momentarily de-energized (see p. 32).Note: This anti-pumping function can be disabled by series connecting a ready-to-close ("b" contact)switch (PF) to the closing coil.
Circuit Breaker Closing Time Less Than 80 ms
Operating Voltage Range 0.85 to 1.1 x Rated Voltage
Control Voltage (V) 60 Hz 120–240
DC 24–48–125
Consumption (Inrush and Sealed) 60 Hz 20 VA
DC 15 W
0631
3049
11/98©1995 Square D—All Rights Reserved26
Accessories06
3130
49
0631
3051
0631
3052
C2
C1
MX
RemoteOpen
D4
D1
RemoteOpen
MN
Instantaneous Undervoltage Trip Device (MN)
This release instantaneously opens the circuit breaker when supply voltage drops below a valuebetween 35% and 70% of rated voltage. If the release is not energized, the circuit breaker cannotbe closed (either manually or electrically). Any attempt to close it will have no effect on the maincontacts. Closing is possible when the release voltage reaches 85% of its rated value. Theinstantaneous undervoltage trip device is field-installable.
Control Voltage (V)
60 Hz 120–240–480
DC 24–48–125–250
Consumption (Inrush and Sealed)
AC 20 VA
DC 15 W
Operating Time 40 ms
Opening Coils
Three types of voltage releases can be used for remote opening of the circuit breakers:n Shunt trip (MX)n Instantaneous undervoltage trip device (MN)n Time-delayed undervoltage trip device (MNR)
Possible Combinations
Each MASTERPACT circuit breaker can be equipped with:n One shunt trip (MX) + one undervoltage trip device (MN or MNR)n Or two shunt trips (MX)
Shunt Trip (MX)
This release is rated for continuous duty and operates with control voltages between 85% and 110%of its rating. However, when series connected with an "a" auxiliary switch, the shunt trip can beoperated with 55% or more of its rated voltage and can be used for ground-fault protection whencombined with a Class 1 ground-fault sensing element. The shunt trip is field-installable.
27©1995 Square D—All Rights Reserved11/98
Accessories06
3130
53
0631
3054
12 14
OF
22 24 32 34 42 44
Closed
Open
11 21 31 41
Time-delayed Undervoltage Trip Device (MNR) (1)
To prevent the circuit breaker from tripping in the event of transient voltage drops, this release has abuilt-in adjustable time delay. If required, this time delay can be overridden by connecting anexternal switch on an additional circuit (wired by the user). The undervoltage trip device is field-installable.
MN MNR (1)
Control Voltage (V)
60 Hz 120 120
240 —
480 480
DC 24 —
48 —
125 —
250 —
Consumption (Inrush and Sealed)
AC 20 VA 20 VA
DC 15 W 15 W
Operating Time (s)
0.09 0.5–0.9–1.5–3
(1) Not UL Listed.
Heavy Usage Auxiliary Switches (OF)
Four SPDT switches with double break construction. They are directly operated by the maincontacts and ensure a large insulation distance in open position. They are therefore particularlysuitable for insulation of auxiliary circuits or reliable interlockings.n "a" contacts are open when the circuit breaker is open and closed when the circuit breaker is
closed.n "b" switches are closed when the circuit breaker is open and open when the circuit breaker is
closed.See page 30 for operating diagrams. Auxiliary switches are field-installable.
11/98©1995 Square D—All Rights Reserved28
Accessories
24 Additional Auxiliary Switches (OFSUP)
An external plate holds a set of 24 SPDT switches operated by means of a cable. They areavailable only for drawout circuit breakers.
0631
3055
0631
3056
212
211
F
Open
222
221
F
234
231
O
244
241
O
Closed
0631
3057
252 254
251
PF
Ready-to-Close
Ready-to-close Switch (PF)
This SPDT switch indicates that the circuit breaker is ready to close and that the followingconditions exist:n The circuit breaker is openn The stored energy mechanism is chargedn The control unit is resetn The circuit breaker opening push button is neither locked nor padlockedn The circuit breaker is in the fully-connected or test positionThe switch is field-installable.
Standard Auxiliary Switches (O and F)
2a + 2b switches available as standard:n "a" contacts are open when the circuit breaker is open and closed when the circuit breaker is
closed.n "b" switches are closed when the circuit breaker is open and open when the circuit breaker is
closed.See page 30 for operating diagrams.
29©1995 Square D—All Rights Reserved11/98
Accessories
Connected Position Switches (CE)
A block of four SPDT switches operate when a drawout circuit breaker is in the connected position.The switch block is field-installable.
Disconnected Position Switches (CD)
A block of two SPDT switches operate when a drawout circuit breaker is in the disconnectedposition. The switch block is field-installable. See page 30 for operating diagrams.
Test Position Switch (CT)
One SPDT switch is operated only when the circuit breaker is in the test position. The switch is field-installable.
Connection by 1/4 in. Male Quick Connect Terminal
0631
3060
Current Ratings (A)Voltage (V) Auxiliary Switch Ready-to-close Position Switch
Heavy Usage Standard 24 Additional Switch Connected Disconnected Test
60 Hz 240 10 15 15 12 15 15 15
480 10 (1) 6 6 6 6 6
600 6 3 3 3 3 3
DC 125 3 0.5 0.5 0.5 0.5 0.5
250 3 0.25 0.25 0.25 0.25 0.25
See page 65 for IEC voltage ratings.(1) 8 A for MC08.
314 312
311
324 322
321
352 354
351
362 364
361
Connected
Disconnected
372 374334 332
321
344 342
321 371
Test
0631
3058
0631
3059
Disconnected Position Switches (CD) Connected Position Switches (CE)
11/98©1995 Square D—All Rights Reserved30
Accessories
b
a
.1.4
.2
a
b
.1.4
.2
.1 .2b
.1 .4a
210
inch
530
mm
421
Open
Closed
13/8 in. (35 mm)Between Contacts
Open
ClosedOpen
Closed
3/8 in. (9.5 mm)Between Contactsin Open Position
OpenClosed
ClosedOpen
OpenClosed
ClosedOpen
FullyOpen
FullyClosed
Operating Diagrams
Auxiliary Switches
Position Switches
Note: Position switches are shown with the circuit breaker in the connected position.
Note: Contacts are shown with the circuit breaker in the open position. Scale applies only todistance between main contacts.
Main Contact Position
Heavy Usage (OF)
Standard (O)
Standard (F)
24 Additional (OFSUP)
Main DisconnectPosition
Secondary DisconnectPosition
Connected PositionSwitches (CE)
Disconnected PositionSwitches (CD)
Test Position Switches(CT)
Disconnected Test Connected
Open Closed
Closed Opena
b
.1.4
.2
Connected
Connected
Open
Closeda
b
.1.2
.4
Closed
Open
Open
Closeda
b
.1.4
.2
Closed
Open
Open
Closed
Isolation Distance (1 in. [25.4 mm] or More)
Isolation Distance (1/2 in. [13 mm] or More)
0631
3061
0631
3062
31©1995 Square D—All Rights Reserved11/98
0631
3063
Accessories
Push Button Locking Device (VBP)
This device prevents local manual operation of the circuit breaker by covering the opening and/orclosing the push buttons. This locking device can be locked by a padlock or a sealing lead.
Open Position Lock (VSKA)
A key interlock that locks the circuit breaker in the open position by holding the push button in itsdepressed position. The key interlock is provided.
Door Interlock (VPEC)
This lock prevents the compartment door from being opened when the circuit breaker is in theconnected position. If the circuit breaker is put into the "connected" position with the door open, thedoor can be closed without disconnecting the circuit breaker.Note: For greater protection, this interlock can be used with racking interlock (VPOC) below.
Racking Interlock (VPOC)
This lock prevents racking in the circuit breaker when the door is open. (Insertion of the circuitbreaker racking crank is not possible when the compartment door is open.)
Disconnected Position Locking
The circuit breaker can be locked in the disconnected position by means of one to three padlocks(padlocks not provided) or one key interlock (factory-mounted option VSKC). The key interlock is onthe stationary assembly and accessible with the cubicle door locked.Note:n Key interlock is of the captive key type, free when locked.n By special order, locking may be possible on disconnected, test and connected positions
(VSKEC).
Spring Charge Interlock (VEAA)
This selection is for a device that prevents the circuit breaker or switch from being fully withdrawnfrom its cradle when the closing spring is charged. It is standard for ANSI (UL1066) circuit breakersand an option on others. The VEAA interlock is not compatible with undervoltage releases (MN,MNR or MNRI).
0631
3065
0631
3064
Push Button Locking Device (VBP) Open Position Lock (VSKA)
11/98©1995 Square D—All Rights Reserved32
Accessories
Mechanical Interlocks
n Disconnecting When Circuit Breaker Is Closed:During any disconnecting attempt when the circuit breaker is closed, an interlocking deviceensures the tripping of the circuit breaker before the actual separation of the main disconnects.The circuit breaker remains, however, operable in the other positions: test, disconnected andwithdrawn.
n Circuit Breaker Closing When Not Completely Connected:The interlocking device mentioned above prevents closing of the circuit breaker if the connectingoperation is not completely achieved.
n Connecting Circuit Breaker When Door Opened:VPEC and VPOC options prevent the compartment door from being opened when the circuitbreaker is in the connected position and from connecting the circuit breaker when the door isopen.
Electrical Interlocks
n Priority of Opening Orders (Standard):Opening coils (undervoltage trip devices, shunt trip) and opening push button have priority overthe closing coils and closing push button.
n Mechanical Pop-out Type Indicator (Standard):Under overcurrent or ground-fault conditions, the trip indicator located in the control unit will popout. It is not possible to close the circuit breaker until this trip indicator is reset. This standardfunction can be disabled upon request.
n Anti-pumping Function (Standard):In case the closing coil (XF) becomes permanently energized, the circuit breaker remains in theopen position A after it has been opened, either by manual or electrical operation. The circuitbreaker can be closed only if the closing coil is momentarily de-energized B.Note: This anti-pumping function can be disabled by series connecting a "ready to close" (NCcontact) switch (PF) with the closing coil (XF).
0631
3066
WithoutAnti-pumpingFunction
ON ON
OFF
ON
OFF OFF
OFF B
ON
OFF OFF A
ON
Closing Coil
CircuitBreaker Status
Shunt Trip (same anti-pumping function with undervoltage trip device)
33©1995 Square D—All Rights Reserved11/98
Interlocking Rods and Cables
Two or three MASTERPACT circuit breakers can be mechanically interlocked by means of rods orcables. This accessory is mountable on the right side of the circuit breaker. This adaptation can bemade on site without modifying the circuit breaker.
Mechanical Interlock Between Two or Three Stacked Circuit BreakersThis interlocking is obtained by the joining of:n One adaptation blockn One or two adjustable and nonadjustable rodsMaximum distance between the two fixing surfaces of the devices: 35 in. (0.89 m)
Mechanical Interlocks Between Two Side-by-Side Circuit BreakersThis interlocking is obtained by the joining of:n One adaptation blockn One set of adjustable cables with a maximum length of 78 in. (2 m)
Possible Mounting Arrangements Among Three Stacked Circuit Breakers
One use, power supplied by:n Two transformers N1 and N2 which are connected in paralleln Or one standby source G
0631
3067
0631
3070
0631
3069
0631
3068 GN2N1
N2N1C
N1 N2 N3
One use, power supplied by one group of transformers N1, N2 or N3 or of generators, preventingany connection in parallel.
Two uses, independently powered supply by two transformers N1 and N2, standby through a circuitbreaker or a connection tie switch, preventing the connection in parallel of the two currenttransformers.
Accessories
11/98©1995 Square D—All Rights Reserved34
Accessories
Safety Shutters (VO)
Comprising two independent parts, line and load side, the safety shutters automatically blockaccess to the main disconnects when the circuit breaker is in the disconnected, test or fullywithdrawn position.
Shutters Lock (VVC)
A factory-mounted movable and lockable slide (padlock not supplied) is used to:n Lock the line or load shutters in the closed positionn Hold the line or load shutters in the open positionA support is provided at the back of the stationary assembly to hold the slide when not in use.
0631
3071
0631
3074
StationaryAssembly
Circuit BreakerFrame
Possible ArrangementsFrame Stationary Frame Stationary
Assembly Assembly
A–B–C 4–5–6 B–C–D 1–5–6
A–B–D 3–5–6 B–C–E 1–4–6
A–B–E 3–4–6 B–C–F 1–4–5
A–B–F 3–4–5 B–D–E 1–3–6
A–C–D 2–5–6 B–D–F 1–3–5
A–C–E 2–4–6 B–E–F 1–3–4
A–C–F 2–4–5 C–D–E 1–2–6
A–D–E 2–3–6 C–D–F 1–2–5
A–D–F 2–3–5 C–E–F 1–2–4
A–E–F 2–3–4 D–E–F 1–2–3
Rejection Feature (VDC)
The rejection feature ensures that only the properly designated circuit breaker is matched with theselected cradle assembly. It is made of two parts (one for the frame and one for the stationaryassembly), and allows 20 different combinations.
0631
3073
Safety Shutters Shutters Lock
0631
3072
AB
CD
FE
12
34
56
35©1995 Square D—All Rights Reserved11/98
0631
3075
0631
3076
Interphase Barrier (EIP)
Mounted between terminals of the stationary assembly, the interphase barrier prevents arcprolongation to the circuit breaker in the event of a line side fault and isolates the circuit breakerconnections in insulated bus bar installations.
Transparent Cover (CB)
Hinged-mounted and locked with a milled head, this cover is designed to be installed on the doorescutcheon. It provides a higher degree of protection and is suitable for drawout or fixed-mountedcircuit breakers.
Interphase Barrier Transparent Cover
Accessories
11/98©1995 Square D—All Rights Reserved36
Switch06
3130
77 RatingsType Ampere Short-time Rating Short-circuit Withstand When
Rating (RMS Sym. Amperes) Protected by a MASTERPACT(A) 600 Vac Max. Circuit Breaker (A)
Max. Frame (A) 600 Vac Max.
MP08 NA 800 50,000 800 50,000
MP12 NA 1200 50,000 1200 50,000
MP16 NA 1600 50,000 1600 50,000
MP20 NA 2000 50,000 2000 50,000
MP25 NA 2500 50,000 2500 50,000
MP30 NA 3000 50,000 3000 50,000
MP40 NA 4000 85,000 4000 85,000
MP50 NA 5000 85,000 5000 85,000
MP63 NA (1) 6300 85,000 6300 85,000
(1) Not UL Listed.
Construction
The MASTERPACT switch is identical to the MP circuit breaker, except that the switch is notequipped with current transformers or an actual control unit. However, it does have an STR08dummy unit.
Accessories, Dimensions and Connections
Switch accessories, dimensions and connections are identical to those of the corresponding circuitbreaker, except that the overcurrent trip switch is not available with the switch version.
Page
Accessories 23
Wiring diagrams 42
Circuit Breaker Dimensions 46
HAZARD OF EQUIPMENT DAMAGE.
This switch contains no overcurrent protection.It is suitable for use at its ampere rating whenprotected by a MASTERPACT circuit breakerof the same ampere rating.
Failure to observe this precaution cancause equipment damage.
CAUTION
37©1995 Square D—All Rights Reserved11/98
Overcurrent Protection STR 28D Control Unit
0631
3078
Trip Curves
Multiple of Current Setting (Ir)
10 20 30 405 6 7 8 9 50 100
60 70 80 90432.5 .6 .7 .8 .91 1.5 200
300
400
500
600
700
800
900
1000
2000
3000
4000
8000
9000
1000
0
7000
6000
5000
.01
.1
.02
.03
.04
.05
.06
.07
.08
.09
1
.2
.3
.4
.5
.6
.7
.8
.9
10
2
3
4
5
6789
30
40
20
50
60708090100
200
300
400
500
6007008009001000
2000
3000
4000
5000
6000700080009000
.01
.1
.02
.03
.04
.05
.06
.07
.08
.09
1
.2
.3
.4
.5
.6
.7
.8
.9
10
2
3
4
5
6789
30
40
20
50
60708090
100
200
300
400
500
600700800900
1000
2000
3000
4000
5000
6000700080009000
10000
Instantaneous PickupI = 1.5–10 x Ir
1.2
10 20 30 405 6 7 8 9 50
10060 70 80 90432.5 .6 .7 .8 .91 1.5
200
300
400
500
600
700
800
900
1000
2000
3000
4000
8000
9000
1000
0
7000
6000
50001.2
Tim
e in
Sec
onds
Current Setting:STR 28D = 0.4–1 x Sensor RatingSTR 28DP = 0.8–1 x Plug Rating
11/98©1995 Square D—All Rights Reserved38
Trip Curves
Overcurrent Protection STR 38S Control Unit
0631
3079
(*) InstantaneousRating In (A) 630 800/1000 1200/1600 2000 2500 3000/3200 4000/5000/6300Fixed Threshold I = In x … 28 28 24 20 14 12 10
Tim
e in
Sec
onds
10 20 30 405 6 7 8 9 50 60 70 80 90432.5 .6 .7 .8 .9 1 1.5 100
20 30 40 50 60 3 4 5 6 7 8 910 20 30 40 60502
x Ir x In
1.2
1.2
.01
.1
.02
.03
.04
.05
.06
.07
.08
.09
1
.2
.3
.4
.5
.6
.7
.8
.9
10
2
3
4
5
6789
30
40
20
50
60708090100
200
300
400
500
6007008009001000
2000
3000
4000
5000
6000700080009000
105 6 7 8 9432.5 .6 .7 .8 .9 1 1.5.01
.1
.02
.03
.04
.05
.06
.07
.08
.09
1
.2
.3
.4
.5
.6
.7
.8
.9
10
2
3
4
5
6789
30
40
20
50
60708090
100
200
300
400
500
600700800900
1000
2000
3000
4000
5000
6000700080009000
100003 4 5 6 7 8 910 20 30 40 80 90 10
0
7060502
70 80 90 100
80 9010
070
0
0.3
0.2
0.1
0.4
Short-time PickupIm = 1.5–10 x (Ir)
0.3
0.2
0.1I t OFF
I t ONInst (*)
Current Setting:STR 38S = 0.4–1 x Sensor RatingSTR 38SP = 0.8–1 x Plug Rating2
2
2
39©1995 Square D—All Rights Reserved11/98
Overcurrent Protection STR 58U Control Unit
0631
3080
(*) InstantaneousRating In (A) 630 800/1000 1200/1600 2000 2500 3000/3200 4000/5000/6300Maximum Threshold I = In x 28 28 24 20 14 12 10
Trip Curves
.01
.1
.02
.03
.04
.05
.06
.07
.08
.09
1
.2
.3
.4
.5
.6
.7
.8
.9
10
2
3
4
5
6789
30
40
20
50
60708090100
200
300
400
500
6007008009001000
2000
3000
4000
5000
6000700080009000
.01
.1
.02
.03
.04
.05
.06
.07
.08
.09
1
.2
.3
.4
.5
.6
.7
.8
.9
10
2
3
4
5
6789
30
40
20
50
60708090
100
200
300
400
500
600700800900
1000
2000
3000
4000
5000
6000700080009000
3 4 5 6 7 8 910 20 30 40 80 90 100
7060502
0.3
0.2
0.1
Tim
e in
Sec
onds
10 20 30 405 6 7 8 9 50 60 70 80 90432.5 .6 .7 .8 .9 1 1.5 100
x Ir x In
1.2
3 4 5 6 7 8 910 20 30 40 80 90 100
706050210 20 30 405 6 7 8 9 50 60 70 80 90432.5 .6 .7 .8 .9 1 1.5
1001.2
Instantaneous PickupI = 2 x In Max (*)
I t OFF
I t ON
Short-time PickupIm = 1.5–10 x (Ir)
0.3
0.2
0.1
0.4
Current Setting:STR 58U = 0.4–1 x Sensor RatingSTR 58UP = 0.8–1 x Plug Rating
2
2
Instantaneous DialSettings800/1000 A
H1: 2–4–8–12–14–19–22–OffH2: 2–4–8–12–14–19–22–Max.
1200/1600 A
H1: 2–4–8–12–14–17–22–OffH2: 2–4–8–12–14–17–22–Max.
2000 A
H1: 2–4–8–10–12–14–17–OffH2: 2–4–8–10–12–14–17–Max.
2500 A
H1: 2–4–6–8–10–12–12–OffH2: 2–4–6–8–10–12–12–Max.
3000/3200 A
H1: 2–4–6–8–10–10–10–OffH2: 2–4–6–8–10–10–10–Max.
4000/5000/6300 A
H1: 2–4–6–8–8–8–8–OffH2: 2–4–6–8–8–8–8–Max.
11/98©1995 Square D—All Rights Reserved40
Trip Curves
Ground-fault Protection STR 38S–STR 58U Control Units
0631
3081 .15
Multiple of Current Sensor (In)
Tim
e in
Sec
onds
I t OFF
Ground-fault PickupIh = 0.1 x In 1200 A Max.
I t ON
1 1.2 1.5 2 3 4.5 .6 .7 .8 .9 5 106 7 8 9 20 30 40 50 60 70 80 90 100
200
300
400
500
600
700
800
900
1000
.4.3.2.05
.06
.07
.08
.09
.1
.01
.001
.002
.003
.004
.005
.006
.007
.008
.009
.1
.02
.03
.04
.05
.06
.07
.08
.09
1
.2
.3
.4
.5
.6
.7
.8
.9
10
2
3
4
5
6789
30
40
20
50
60708090
100
200
300
400
500
600700800900
1000
.01
.001
.002
.003
.004
.005
.006
.007
.008
.009
.1
.02
.03
.04
.05
.06
.07
.08
.09
1
.2
.3
.4
.5
.6
.7
.8
.9
10
2
3
4
5
6789
30
40
20
50
60708090100
200
300
400
500
6007008009001000
.12
.15 1 1.2 1.5 2 3 4.5 .6 .7 .8 .9 5 106 7 8 9 20 30 40 50 60 70 80 90 100
200
300
400
500
600
700
800
900
1000.4.3.2
.05
.06
.07
.08
.09 .1 .12
0.1
0.2
0.3
0.4
2
2
41©1995 Square D—All Rights Reserved11/98
Load Monitoring STR 58U Control Unit
0631
3082
Multiple of Current Setting (Ir)
.01
.1
.02
.03
.04
.05
.06
.07
.08
.09
1
.2
.3
.4
.5
.6
.7
.8
.9
10
2
3
4
5
6789
30
40
20
50
60708090
100
200
300
400
500
600700800900
1000
2000
3000
4000
5000
6000700080009000
10000
.1
.02
.03
.04
.05
.06
.07
.08
.09
1
.2
.3
.4
.5
.6
.7
.8
.9
10
2
3
4
5
6789
30
40
20
50
60708090100
200
300
400
500
6007008009001000
2000
3000
4000
5000
600070008000900010000
1 1.2 1.5 2 3 4.5 .6 .7 .8 .9 5 106 7 8 9 20 30 40 50 60 70 80 90 100
200
300
400
500
600
700
800
900
1000
.4.3.2.05
.06
.07
.08
.09
.1
Current SettingIr = 0.8–1 x Plug Rating
Ic2 = 0.5 1 x Ir
tr1 = tr / 2
tr2 = tr / 4
Ic1 = 0.8 1 x Ir
.12 .15
1 1.2 1.5 2 3 4.5 .6 .7 .8 .9 5 106 7 8 9 20 30 40 50 60 70 80 90 100
200
300
400
500
600
700
800
900
1000.4.3.2
.05
.06
.07
.08
.09 .1 .12 .15
.01
Tim
e in
Sec
onds
Trip Curves
11/98©1995 Square DÑ All Rights Reserved42
Wiring Diagrams
Diagram No. 689 889
Note: Circuit breaker shown in connected, charged and open position with undervoltage releases energized.
0631
3083
RemoteOpen
314 312
311
324 322
321
352 354
351
362 364
361
Connected
12 14 22 24 32 34 42 44
Open
Closed
11 21 31 41
MXMN
D4 C2
D1 C1
ShuntTripor
UndervoltageTrip Device
Disconnected
372 374
371
244
241
234
231
222
221
212
211
XF
A4
A1
252 254
251
262 B4
B1
PF CHOFStandard
334 332
331
344 342
341
SpringCharged
Connected Disconnected Standard HeavyDuty
Readyto Close
Motor Operator
Drawout Position Switches Auxiliary Switches Remote Operation
Test
Test
RemoteClose
43©1995 Square D—All Rights Reserved11/98
Diagram No. 689 889
(1) 84 terminal not available with Z or C option.(2) Zone-selective interlocking with downstream circuit breaker: remove
the jumper.(3) Communication output through DIGIPACT module.(4) Use 24 Vdc supply for loads less than 20% of current sensor
rating, or one-phase load less than 40% of sensor rating.
0631
3084
(5) Use 24 Vdc supply for lower setting.(6) Use 24 Vdc supply for F option if not supplied with PIL (battery)
option; use 24 Vdc supply (mandatory) for FV option.
Wiring Diagrams
Communication Network
FaultAlarm
LR2
LR1
1
82 84
81
SDELTAlarm
F1
I Option
F2
24 Vdc
T or W Option
V
LT ST Gnd
F or FV Option
Z21
Z Option
Z22
DownstreamCircuitBreaker
Out
In
Z11 Z12
UpstreamCircuitBreaker
OverloadAlarm
T2 T1
Ic1
R1 R2
C
R Option
Ic2
SelectedFault
C Option
e + e –
S2 S1
Ground-faultProtection
Remote Faultand OverloadIndication
AmmeterLocal Fault Indicationsand Remote SelectedFault Indication
Zone-selectiveInterlocking
LoadMonitoring
DataTransmission
+_(2)
(1)
(3)
(4) (5) (6)
11/98©1995 Square D—All Rights Reserved44
Wiring Diagrams
SC150 Indication and Control Interface
0631
3085
Internal BusMarking Color
24 V Red
0 V Black
Internal Bus – White
Internal Bus + Blue
630
24V0NC–+ e+ T–T+e– ON OFFSDE
NO NC ON CD SDV SDCE
IN
C1 C2 C3
C4
reset400
COM12 4
24-250V CC100-440V CA
L NSC150 Indication and Control Interface
DIGIPACTInternal Bus
To PowerSupply "L"
Control Outputs Inputs
Inputs
ExternalContact
To "IN"SC150Input Terminals
To "C4"SC150Input Terminals
MotorOperatorPower Supply
PT100TemperatureProbe
To SC150Terminals"T+" and "T–"
XF MX M
A4 C2 B4
A1 C1 B1
12 4
OF
12 4
SDE
12 4
CD
12 4
CE
12 4
e+ e –
12
SDE
MASTERPACT Circuit Breaker
Control UnitSTR28 / 38 / 58
To Power Supply "L"
to "NO"SC150 ControlOutput Terminals
To "ON"SC150 ControlOutput Terminals
To Power Supply "N"
To "C3"on SC150Input Terminals
To "CE"on SC150Input Terminals
To "CD"on SC150Input Terminals
To "OFF"on SC150Input Terminals
To "C4"on SC150Input Terminals
To "ON"on SC150Input Terminals
To "SDE"on SC150Input Terminals
To "C4"on SC150Input Terminals
To "SDE"on SC150Input Terminals
To AuxiliarySource
To "e +" and "e –"
Control UnitSTR58UControl Unit
on SC150"COM" Terminals
RemoteControl
45©1995 Square D—All Rights Reserved11/98
Wiring Diagrams
DC150 Data Concentrator
0631
3086
Connectors
The DC150 concentrator is connected using a SUBD9 male connector with a metal hood (e.g., ITTcanon, DE9P K83 + hood or DE115-500-5-RD). The DC150 concentrator is equipped with a SUBD9female connector. For a multidrop configuration, the tap-offs can be made either via a branching offof RS485 connector Catalog No. 50788 or standard connection boxes, taking care to respect thenecessary precautions when connecting the shieldings. The adaptation of an RS232 output on apersonal computer to accept the RS485 standard connector should be done with the RS485/RS232converter Catalog No. 50786.
DC150 Concentrator withPolarization and 2-wireAdaptation
0631
3087
0631
3088
Recommended Protection and Cable SizesRecommended Type Catalog No.Protection
C60N Supplementary Circuit Protector 3-Phase MG24466 or 24214Curve C–10 A
Fuse-link 10 A aM 15660
Marking (1) Connection Cable
A Voltages 0.06 to 0.1 in.2 (0.75 to 2.5 mm2)
B Internal Bus 0.03 to 0.1 in.2 (0.75 to 2.5 mm2) (Twisted)
C MODBUS/JBUS 0.03 to 0.1 in.2 (0.75 to 2.5 mm2) (Shielded)
Internal bus Marking Color
24 V Red
0 V Black
Internal Bus – White
Internal Bus + Blue
(1) See first drawing above.
0
8
43
2
CD
E
5
6 7
B
A9
0
8
43
2
CD
E
5
6 7
B
A9
N°1
N°2
1
5
6
9
9600
19200
DC150 Addresson MODBUS/JBUSNetwork
RS485MODBUS/JBUS
NC
110–240 Vac115–125 Vdc
Internal Bus +
Internal Bus –
0 V24 V
DC150
Protection
InternalBus
B
B
A C
MODBUS/JBUSSpeed
1Rp
Rp
Rc
2
3
4
5
6
7
8
9
0 V
0 V
5 V
RD+ (A')
RD– (B')
TD+ (A)
TD– (B)
1
2
3
4
5
6
7
8
9L– (B / B')
L+ (A / A')
11/98©1995 Square D—All Rights Reserved46
Circuit Breaker Dimensions
Door Interlock
Note: The door interlock can be mounted oneither the right side or the left side of the circuitbreaker.
0631
3095
0631
3096
0631
3097
0.123
14.5/368 MP3029.4/748 MP50/MC5038.4/978 MP63
0.123
1.6943
0.7920
0.154
0.8020
≤0.154
14.2360
2.3660Mounting
Holes17.5445
CircuitBreakerBase
Rear Cutout
Door Escutcheon (Fixed Mounting)
Note: Refer to shop drawings for verification.
0631
3092
0631
3093
0631
3094
Door Cutout Drilling of the Door
1.062712.8
3251.4838
MountingHoles
10.63270
0.19 Dia.∅5
6153
2.7269
5.83149
7.1180
0.6918
0.5715
2.8272
2.8272
7.1180
0631
3089
Door Escutcheon (Drawout Mounting)
0631
3090
0631
3091
12.8 325
2.17 55
1.85 47
0.75 19
2.666
1.77 45
Basis:MP08 to MP30MC08 to MC32
10.63 270
MP40 to MP63MC40/MC50
0.19 Dia.∅5
2.7269
MountingHoles
0.69/187.1180
7.1180
6153
5.83149
2.8272 0.73
19
Door Cutout Drilling of the Door
Dimensions: inchmm
47©1995 Square D—All Rights Reserved11/98
External Neutral Sensor
MP08 to MP20, MC08 to MC20 MP25/MP30/MP40, MC32/MC40
0631
3098
0631
3099
0631
3100
0631
3101
0631
3102
0631
3104
0631
3103
MP50 to MP63
0.5815
7.47190
0.5815
1.1730
2.1154
2.3560
2.3560 8.62
220
3.1380
0.5414
1.5740
9.12 / 9.41235 / 240
6.27160
3.589.5
2.19560.68
17.50.7820 7.84
200
4.7120
1.1730
= = = = = = =
0.9825
7.84200
0.5815
0.47 Dia.Ø12
Circuit Breaker Dimensions
Dimensions: inchmm
4.72120
0.7820
0.718
1.7545
6.30160
3.1580
0.718
1.7545
1.7545
0.718
0.56 Dia.∅14
4.72120
0.7820
0.718
6.30160
3.1580
0.718
1.7545
1.7545
0.56 Dia.∅14
0.718
1.7545
3.94100
1.846
2.974
2.3660
0.7920
1.7344
0.39/10MP08 to MP16MC08 to MC16
0.79/20MP20/MC20
3.94100
1.846
4.5114
2.3660
0.7920
0.79/20MP25/MP30/MC32
1.18/30MP40/MC40
3.3184
11/98©1995 Square D—All Rights Reserved48
Circuit Breaker Dimensions
4-Pole
0631
3109
0631
3111
0631
3112
3-Pole Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space17.5 in. (440 mm) h. by21 in. (530 mm) w. by14.25 in. (360 mm) d.Ventilation is notrequired. Refer to shopdrawing #688 378 forverification. Verticalterminals are optionalfor MP08–MP12 circuitbreakers.
0631
3105
0631
3107 06
3131
0806
3131
0606
3131
10
4.53115
4.53115
3.3585
3.15800.98
250.9825 0.47 Dia.
∅12
4.53115
4.53115
3.3585
0.5 Dia.∅12,7
0.6316
14.88378
17.24438
15.75400 16.61
422
0.4311
0.4311
(4) MountingHoles0.44 Dia. / Ø11
0.9825
3.1580
4.53115
3.3585
4.53115
0.47 Dia.Ø12
4.53115 0.63
16
4.53115
4.53115
3.3585
0.5 Dia.Ø12,7
4.53115
0.4311
0.4311
20.2515
19.4493
21.8553
(4) MountingHoles0.44 Dia. / Ø11
3.1580
0.3910
4.41112
2.0853
0.6917,5
125,4
3.1580
5.59142
0.193
1.6943
15.78401
1.5740 Min.
5.91150
2.8372
1.18 / 30 Min.2.36 / 60 Max.
9.17233
2.6868
Cell (Insulation Not Required)
0.7118
11.14283
0.4912,5
Necessary Space for Removing the Arc Chutes
MP08–MP12–MP16 Fixed Mounting
Dimensions: inchmm
Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space17.5 in. (440 mm) h. by25.5 in. (645 mm) w. by14.25 in. (360 mm) d.Ventilation is notrequired. Refer to shopdrawing #691 378 forverification. Verticalterminals are optionalfor MP08–MP12 circuitbreakers.
3.1580
0.3910
4.41112
2.0853
0.6917,5
125,4
3.1580
5.59142
0.193
1.6943
15.78401
1.5740 Min.
5.91150
2.8372
1.18 / 30 Min.2.36 / 60 Max.
9.17233
2.6868
Cell (Insulation Not Required)
0.7118
11.14283
0.4912,5
Necessary Space for Removing the Arc Chutes
49©1995 Square D—All Rights Reserved11/98
MP08–MP12–MP16–MC08–MC16 Drawout Mounting
4-Pole
0631
3117
0631
3119
0631
3120
3-Pole
0631
3113
0631
3115
0631
3120
0631
3114
0631
3118
4.53115
4.53115
1.8748
0.9825 0.47 Dia.
∅12
3.1580
4.53115
4.53115
1.8748
0.5 Dia.∅12,7
0.6316
17.14435
2.1755
2.1755
12.8325
(4) MountingHoles0.44 Dia./∅11
3.1580 3.23
82
5.98152
17.32440 Min.
0.6918
125
1.6542
0.4913
13.78350
0.4913
11.81300
6.89175
3.3585
3.981014.21107
9.56243
1.7745 Disconnected Position
Withdrawn Position
Cell (Insulation Not Required)
14.21361
0.9825
0.3910
4.41112
3.6292
0.9825
3.1580
4.53115
1.8747,5
4.53115
0.47 Dia.Ø12
4.53115 0.63
16
4.53115
4.53115
1.8747,5
0.5 Dia.Ø12,7
4.53115
16.73425
2.7570
2.1755
(4) MountingHoles0.44 Dia. / Ø11
21.65550
21.89556
3.1580 3.23
82
5.98152
17.32440 Min.
0.6918
125
1.6542
0.4913
13.78350
0.4913
11.81300
6.89175
3.3585
3.981014.21107
9.56243
1.7745 Disconnected Position
Withdrawn Position
Cell (Insulation Not Required)
14.21361
0.9825
0.3910
4.41112
3.6292
Circuit Breaker Dimensions
Dimensions: inchmm
Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space17.5 in. (440 mm) h. by21 in. (530 mm) w. by14.25 in. (360 mm) d.Ventilation is notrequired. Refer to shopdrawing #688 378 forverification. Verticalterminals are optionalfor MP08–MP12–MC08circuit breakers.
Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space17.5 in. (440 mm) h. by25.5 in. (645 mm) w. by14.25 in. (360 mm) d.Ventilation is notrequired. Refer to shopdrawing #691 381 forverification. Verticalterminals are optionalfor MP08–MP12–MC08circuit breakers.
11/98©1995 Square D—All Rights Reserved50
Circuit Breaker Dimensions
3-Pole
0631
3121
MP20 Fixed Mounting
0631
3122
0631
3123
4.53115
4.53115
3.3585
0.7920
0.56 Dia.∅14
3.1580
1.5740 Min.
Cell (Insulation Not Required)
4.53115
1.7544,5
3.1580
5.98152
1.69430.12
3
15.78401
5.91150
2.8372
1.18 / 30 Min.2.36 / 60 Max.
2.6868
0.7118
14.98380,5
1.7544,5
Necessary Space for Removing the Arc Chutes
4-Pole
0631
3124
0631
3125
0631
3123
0.7920
4.53115
3.3585
4.53115
0.56 Dia.Ø14,3
4.53115
0.4311
0.4311
20.2515
19.4493
21.8553
(4) MountingHoles0.44 Dia. / Ø11
Dimensions: inchmm
15.75400 16.61
422
0.4311
0.4311
(4) MountingHoles0.44 Dia. / Ø11
14.88378
17.24438
3.1580
1.5740 Min.
Cell (Insulation Not Required)
4.53115
1.7544,5
3.1580
5.98152
1.69430.12
3
15.78401
5.91150
2.8372
1.18 / 30 Min.2.36 / 60 Max.
2.6868
0.7118
14.98380,5
1.7544,5
Necessary Space for Removing the Arc Chutes
Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space17.5 in. (440 mm) h. by21 in. (530 mm) w. by14.25 in. (360 mm) d.Ventilation is notrequired. Refer to shopdrawing #688 379 forverification.
Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space17.5 in. (440 mm) h. by25.5 in. (645 mm) w. by14.25 in. (360 mm) d.Ventilation is notrequired. Refer to shopdrawing #691 379 forverification.
51©1995 Square D—All Rights Reserved11/98
3-Pole Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space17.5 in. (440 mm) h. by21 in. (530 mm) w. by14.25 in. (360 mm) d.Ventilation is notrequired. Refer to shopdrawing #688 379 forverification.
0631
3127
0631
3128
0631
3129
4.53115
4.53115
1.8748
0.7920
0.56 Dia.∅14
17.14435
2.1755
2.1755
12.8325
(4) MountingHoles0.44 Dia./∅11
6.89175
3.3585
3.98101
9.56243
1.7745 Disconnected Position
Withdrawn Position
14.21361
0.718
1.7545
5.98152
3.1580
17.32440 Min.
Cell (Insulation Not Required)
3.2382
1.7545
1.6542
17.64448
4.53115
4.21107
MP20–MC20 Drawout Mounting
4-Pole
0631
3130
0631
3131
0631
3129
0.56 Dia.Ø14,3
0.7920
4.53115
1.8747,5
4.53115
4.53115
16.73425
2.7570
2.1755
(4) MountingHoles0.44 Dia. / Ø11
21.65550
21.89556
Dimensions: inchmm
Circuit Breaker Dimensions
6.89175
3.3585
3.98101
9.56243
1.7745 Disconnected Position
Withdrawn Position
14.21361
0.718
1.7545
5.98152
3.1580
17.32440 Min.
Cell (Insulation Not Required)
3.2382
1.7545
1.6542
17.64448
4.53115
4.21107
Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space17.5 in. (440 mm) h. by25.5 in. (645 mm) w. by14.25 in. (360 mm) d.Ventilation is notrequired. Refer to shopdrawing #691 382 forverification.
11/98©1995 Square D—All Rights Reserved52
Circuit Breaker Dimensions
4-Pole
0631
3136
0631
3137
0631
3138
3-Pole Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space26 in. (660 mm) h. by21 in. (530 mm) w. by14.25 in. (360 mm) d.with a ventilation of 30sq. in. (200 cm2) at topand bottom. Refer toshop drawing #688 380for verification.
0631
3133
0631
3134
0631
3138
5.85149
5.85149
2.0151
0.56 Dia.∅14
0.256
0.256
1.7544,5
4.72120
10.24260
2.2457
15.78401
3.1580 Cell (Insulation Not Required)
5.91150
2.8372
13.95354,5
2.6868
1.7544,5
1.1329
0.246
1.5740 Min.
2.2858
Necessary Space for Removing the Arc Chutes
0.256,35
0.256,35
0.56 Dia.Ø14,3
2.0151
5.85149
4.55115
5.85149
0.4311
0.4311
20.2515
19.4493
21.8553
(4) MountingHoles0.44 Dia. / Ø11
1.7544,5
4.72120
10.24260
2.2457
15.78401
3.1580 Cell (Insulation Not Required)
5.91150
2.8372
13.95354,5
2.6868
1.7544,5
1.1329
0.246
1.5740 Min.
2.2858
Necessary Space for Removing the Arc Chutes
MP25–MP30 Fixed Mounting
Dimensions: inchmm
14.88378
17.24438
15.75400 16.61
422
0.4311
0.4311
(4) MountingHoles0.44 Dia. / Ø11
Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space26 in. (660 mm) h. by25.5 in. (645 mm) w. by14.25 in. (360 mm) d.with a ventilation of 30sq. in. (200 cm2) at topand bottom. Refer toshop drawing #691 380for verification.
53©1995 Square D—All Rights Reserved11/98
MP25–MP30 Drawout Mounting
4-Pole
0631
3142
0631
3143
0631
3144
3-Pole
0631
3139
0631
3140
0631
3144
5.75146
5.75146
0.6517
0.56 Dia.∅14
0.256
0.256
17.14435
2.1755
2.1755
12.8325
(4) MountingHoles0.44 Dia./∅11
2.2858
6.89175
3.98101
9.56243
1.7745 Disconnected Position
Withdrawn Position
14.21361
17.32440 Min.
Cell (Insulation Not Required)
17.64448
4.21107
1.7544
10.24260
4.72120
1.3033 0.71
181.75
45
1.1429
3.3585
0.256,35
0.256,35
0.56 Dia.Ø14,3
0.6517
5.75146
4.92125
5.35136
0.256,35
0.6516,5
16.73425
2.7570
2.1755
(4) MountingHoles0.44 Dia./ Ø11
21.65550
21.89556
Circuit Breaker Dimensions
Dimensions: inchmm
2.2858
6.89175
3.98101
9.56243
1.7745 Disconnected Position
Withdrawn Position
14.21361
17.32440 Min.
Cell (Insulation Not Required)
17.64448
4.21107
1.7544
10.24260
4.72120
1.3033 0.71
181.75
45
1.1429
3.3585
Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space26 in. (660 mm) h. by21 in. (530 mm) w. by14.25 in. (360 mm) d.with a ventilation of 30sq. in. (200 cm2) at topand bottom. Refer toshop drawing #688 380for verification.
Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space26 in. (660 mm) h. by25.5 in. (645 mm) w. by14.25 in. (360 mm) d.with a ventilation of 30sq. in. (200 cm2) at topand bottom. Refer toshop drawing #691 380for verification.
11/98©1995 Square D—All Rights Reserved54
Circuit Breaker Dimensions
Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space22 in. (560 mm) h. by25.25 in. (640 mm) w.by 14.25 in. (360 mm)d. with a ventilation of30 sq. in. (200 cm2) atbottom. Refer to shopdrawing #689 074 forverification.
0631
3145
0631
3146
0631
3147
6.10155
2.5565
0.53 Dia.∅14
0.256
0.256
6.10155
21.65550
2.7570
2.1755
16.73425
(4) MountingHoles0.44 Dia./∅11
3-Pole
MC32 Drawout Mounting
Dimensions: inchmm
2.2858
6.89175
3.98101
9.56243
1.7745 Disconnected Position
Withdrawn Position
14.21361
17.32440 Min.
Cell (Insulation Not Required)
17.64448
4.21107
1.7544
10.24260
4.72120
1.3033 0.71
181.75
45
1.1429
3.3585
55©1995 Square D—All Rights Reserved11/98
1.1429
0.256,35
0.513
1.1429
5.59142
9.76248
9.76248
0.256,35
3-Pole
0631
3148
0631
3151
0631
3152
0631
3149
0631
3150
9.76248
9.76248
5.59142
1.1429
0.513
0.256
1.1429
0.56 Dia.∅14
Necessary Space for Removing the Arc Chutes
Cell (Insulation Not Required)
1.5740 Min.
15.78401
10.24260
1.7544,5
4.72120
2.2858
2.2457
1.1329
1.7544,5
14.35364,5
2.6868
5.91150
2.8372
1.18 / 30 Min.2.36 / 60 Max.
0.246
32.24819
29.88759
30.71780
31.57802
0.4311
0.4311
(4) MountingHoles0.44 Dia. / Ø11
1.1429
0.256,35
0.7820
1.1429
5.59142
9.76248
9.76248
MP40–MP50 Fixed Mounting
MP40
MP50
Circuit Breaker Dimensions
Dimensions: inchmm
Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space26 in. (660 mm) h. by34 in. (870 mm) w. by14.25 in. (360 mm) d.with a ventilation of 30sq. in. (200 cm2) both attop and bottom. Refer toshop drawing #688 381for verification.
11/98©1995 Square D—All Rights Reserved56
Circuit Breaker Dimensions
Note: Suitable forcontinuous operation at100% rating in aminimum cubicle space26 in. (660 mm) h. by34 in. (870 mm) w. by14.25 in. (360 mm) d.with a ventilation of 30sq. in. (200 cm2) both attop and bottom. Refer toshop drawing #688 381for verification.
0631
3153
0631
3156
0631
3157
0631
31541.26
32
0.256
0.56 Dia.∅14
0.256
3.94100
9.94253
9.94253
(6) MountingHoles0.44 Dia./∅11
2.1755
2.3660
13.78350
32.08815
13.78350
2.2858
6.89175
Disconnected Position
19.1485 Min.
17.64448
10.24260
3.0878
3.3585
1.7545 1.14
29
1.7545
9.56243
4.72120
1.0627
3.981014.21107
Withdrawn Position
Cell (Insulation Not Required)
14.21361
1.7745 0.56 Dia.
∅14
0631
3155
9.94253
9.94253
3.94100
0.256
1.2632
0.256
0.56 Dia.∅14
9.94253
9.94253
3.94100 0.25
60.25
6
0.56 Dia.∅14
1.2632
MP40–MP50–MC50–MC50 Drawout Mounting
3-Pole MP40–MC50
MP50–MC50
Dimensions: inchmm
57©1995 Square D—All Rights Reserved11/98
4-Pole (Not UL Listed)
MP40–MP50 Drawout Mounting
MP40
MP50
0631
3158
0631
3161
0631
3162
0631
3159
0631
3160
0.256,35
0.256,35
9.94252,5
0.56 Dia.Ø14,3
1.2632
3.94100
9.94252,5
9.94252,5
0.256,35
0.256,35
9.94252,5
0.56 Dia.Ø14,3
1.2632
3.94100
9.94252,5
9.94252,5
0.256,35
0.256,35
9.94252,5
0.56 Dia.Ø14,3
1.2632
3.94100
9.94252,5
9.94252,5
2.2858
6.89175
Disconnected Position
19.1485 Min.
17.64448
10.24260
3.0878
3.3585
1.7545 1.14
29
1.7545
9.56243
4.72120
1.0627
3.981014.21107
Withdrawn Position
Cell (Insulation Not Required)
14.21361
1.7745 0.56 Dia.
∅14
41.381051
41.141045
1.5740
18.70475
2.3660
(6) MountingHoles0.44 Dia. / Ø11
18.70475
Circuit Breaker Dimensions
Dimensions: inchmm
Note: Refer to shopdrawing #691 384 forverification.
11/98©1995 Square D—All Rights Reserved58
Circuit Breaker Dimensions
MP63 Drawout Mounting (Not UL Listed)
3-Pole
0631
3163
0631
3164
0631
3165
2.0051 0.56 Dia.
∅14
0.256 0.25
6
13.78350
4.62118
13.78350
(6) MountingHoles0.44 Dia./∅11
2.1655
18.70475
1.5740
18.70475
41.141045
6.89175
1.7745 Disconnected Position
14.21361
19.1485 Min.
Cell (Insulation Not Required)
17.64448
10.24260
3.0878
3.3585
1.75
451.1429
2.2858
1.7545
9.56243
Withdrawn Position
4.72120
1.0627
3.981014.21107
Dimensions: inchmm
Note: Refer to shopdrawing #688 382 forverification.
59©1995 Square D—All Rights Reserved11/98
Circuit Breaker Dimensions
Dimensions: inchmm
0631
3174
Mechanical Interlocks for Drawout or Fixed Circuit Breakers
Fixed Mounting
0631
3175
Connecting Links for Two Stack-mounted Circuit Breakers
Drawout Mounting
1.1730
2.03521.57
404.9125
1.9650
6153
6.39163
(*)
2.5465
6.5166
1.7645
35.29900Max.
(*)
3.2182
35.29900Max.
Circuit Breaker Basisfor Rating:MP08 to MP30 (4-Pole),MC08 to MC32
Circuit Breaker Basisfor Rating:MP40 (3-Pole) to MP63,MC40 (3-Pole)
1.9650
Circuit Breaker Basis
35.29900Max.
1.1730
7.05180
1.17 / 2.3530 Min./ 60 Max.
6.86175
4.11105
1.1730
0.5414
(*)
1.7244
0.195
4.9125
(*)
11/98©1995 Square D—All Rights Reserved60
Circuit Breaker Dimensions06
3131
76
Connecting Links for Three Stack-mounted Circuit Breakers
0631
3177
Drawout Mounting Fixed Mounting
Mechanical Interlocks for Drawout or Fixed Circuit Breakers
0631
3178
Cables for Two Side-by-Side Circuit Breakers
Mounted on Rails Mounted on Backplate Dimensions:
(Except as otherwiseindicated)
inchmm
6.56 ft.2 m Max.
7.87200 Min.
r= 4.72r= 120 Min.
r= 4.72r= 120 Min.
7.05180
1.5740
1.9650
Circuit Breaker Basis for Ratings:MP08 to MP30 (4-Pole), MC08 to MC32
Circuit Breaker Basis for Ratings:MP40 (3-Pole) to MP63, MC40 (3-Pole)
1.7645
35.29900Max.
7.05180
1.5740
50
1.9650
(*)
2.5465
6.5166
2.3560
2.0352
2.3560
2.0352
2.3560
35.29900Max.
35.29900Max.
1.9650
2.3560
0.5414
(*)
2.4362
7.05180
0.195
7.05180
0.195
1.9650
7.05180
1.17 / 2.3530 Min. / 60 Max.
6.86175
(*)4.11105
1.1730
2.3560
0.5414
CircuitBreakerBasis
35.29900Max.
35.29900Max.
61©1995 Square D—All Rights Reserved11/98
Dimensions: inchmm
Circuit Breaker Dimensions
4.13105
1.9750
6.50165
2.8071
6.89175
4.92125
2 Ø.202 Ø5
3.94100
3.94100
5.47139
N°1 N°2
N°1
N°2
960019200
0
8
43
2 1
CD
EF
5
6 7
B
A9
0
8
43
2 1
CD
EF
5
6 7
B
A9
OK
error
com
error
com
24V
BBus JBus
7.60193
4 Ø.204 Ø5
1.9750
4.92125
DC150 Data Concentrator
SC150 Indication and Control Interface
0631
3179
0631
3180
11/98©1995 Square D—All Rights Reserved62
Routine Maintenance Guidelines
Recommended Inspection Intervals
MASTERPACT circuit breakers are designed to be maintenance free (see page 64). However, allequipment with moving parts requires periodic inspection to ensure optimum performance andreliability. It is recommended that the circuit breakers be routinely inspected six months afterinstallation, followed by an annual inspection. Intervals can vary depending on particular use andexperience.
Inspection of Circuit Breaker Terminals
n Inspect terminals; if there is discoloration due to overheating, the joint should be disassembledand the surface cleaned before reinstallation. It is essential that electrical connections are madecarefully in order to prevent overheating.
n Check for terminal tightness.
Inspection of Main Contacts
The arc chutes are easily removed to allow access to the main contacts and to the wear indicator.The wear indicator consists of a groove located within the contacts support (see page 3). When thecircuit breaker is closed, this groove is entirely covered up by the moving contacts. Over time, thewear of the contacts will make the groove appear. When the groove is fully visible, replace thebreaker or have an authorized service center change the contacts.
Inspection of Clusters
Totally maintenance free, they have to be replaced only after overheating due to a defectiveconnection or after a major fault. Inspection is advised when checking the terminal connections.
Cleaning
Remove any dust and dirt that may have accumulated on the circuit breaker surface and terminals.
Mechanical Checks
For long periods circuit breakers may not be required to operate on overload or short-circuitconditions. Therefore it is essential to operate the circuit breaker periodically to avoid mechanicalgumming.
Appendix
HAZARD OF ELECTRICAL SHOCK, BURNOR EXPLOSION.
Turn OFF all power supplying the equipmentbefore installing or removing circuit breaker.
Failure to observe these precautions willcause death, personal injury or electricalshock.
DANGER
HAZARD OF EQUIPMENT DAMAGE.
Since circuit breakers contain factory-sealedand calibrated elements. Do not break seal. Incase of malfunction, repairs must be made ata Square D factory or by an authorizedcompany representative.
Failure to observe this precaution cancause equipment damage.
CAUTION
63©1995 Square D—All Rights Reserved11/98
Appendix
Insulation Resistance Tests
When circuit breakers are subjected to severe operating conditions, an insulation resistance testmay be performed as indicated in NEMA standard publication No. AB4-1991. An insulationresistance test is used to determine the quality of the insulation between phases and phase-to-ground. The resistance test is made at a dc voltage higher than the rated voltage to determine theactual resistance of the insulation. The most common method employs a "megger" type instrument.A 1000-volt instrument will provide a more reliable test because it is capable of detecting tracking oninsulated surfaces. Investigate resistance values below 1 megohm. The insulation test shall bemade:n Between line and load terminals of individual poles with the circuit breaker contacts openn Between adjacent poles and from poles to the metallic supporting structure with the circuit
breaker contacts closedThis test may be made with the circuit breaker in place after the line and load conductors have beenremoved, or with the circuit breaker bolted to a metallic base which simulates the in-servicemounting.
Electrical Tests
These tests require equipment for pole resistance measurement and for overcurrent andinstantaneous tripping in accordance with NEMA Standard publication No. AB4. They are not withinthe scope of normal field operation.
11/98©1995 Square D—All Rights Reserved64
Appendix
Endurances
A–Endurance Without Maintenance
MASTERPACT 08 12 16 20 25 30 - 32 40 50 63MP or MC
Mechanical 12,500 10,000 10,000 10,000 10,000 10,000 5,000 5,000 5,000
Electrical 480 Vac 10,000 10,000 10,000 9,000 8,000 4,000 3,000 3,000 2,000
600 Vac 10,000 10,000 10,000 7,000 6,000 2,600 2,500 2,500 1,500
B–Endurance With Service Maintenance
Electrical (480 Vac) or Mechanical
20,000 20,000 20,000 15,000 15,000 15,000 10,000 10,000 10,000
C–Endurance Required by Standards
Frame size 800 1200 1600 2000 2500 3000 4000 5000 6300
UL489 Mechanical 3,500 2,000 2,000 2,000 2,000 1,500 1,500 1,500 1,500
Electrical 500 500 500 500 500 400 400 400 400
ANSI Mechanical 12,500 NS 4,000 4,000 NS 1,500 1,500 NS NS
Electrical 2,800 NS 800 800 NS 400 400 NS NS
Important Notice:
All endurances given are based on normal operating conditions and conventional tests:n Closing and opening operations at rated currentn Power factor: 0.75–0.80As actual conditions differ, use these values only as inspection guidelines and periodically checkcontact wear.
Under normal operating conditions of use, as determined by UL 489 or ANSI Standards (see tableC) and controlled by tests, MASTERPACT circuit breakers do not require maintenance. However,these circuit breakers exceed, without maintenance and additional costs, the endurances requiredby standards. See tables A and C. Service maintenance by a field service representative will extendthe endurance according to table B. This service can be performed on site and consists in changingcontacts, arc chutes and some other parts.
Example:MP16 at 480 V requires no maintenance before 10,000 cycles (mechanical or electrical). Endurancemay be increased after servicing at 10,000 operations.
65©1995 Square D—All Rights Reserved11/98
Appendix
IEC 947-2 Interrupting Ratings
In addition to UL 489 and ANSI C37-13, MASTERPACT circuit breakers comply with the IEC 947-2Standard as per the table below. For further information, contact a sales representative.
Type Ampere Interrupting Ratings3-Pole Rating (A) UL489 IEC 947-2
RMS Symmetrical Amps480 Vac 600 Vac Short-time 440 Vac 690 Vac
Icu Ics Icu Ics
Standard Interrupting Rating
MP08 H1 800 65 kA 65 kA 50 kA 65 kA 65 kA 65 kA 65 kA
MP12 H1 1200 65 kA 65 kA 50 kA 65 kA 65 kA 65 kA 65 kA
MP16 H1 1600 65 kA 65 kA 50 kA 65 kA 65 kA 65 kA 65 kA
MP20 H1 2000 75 kA 75 kA 75 kA 75 kA 75 kA 75 kA 75 kA
MP25 H1 2500 75 kA 75 kA 75 kA 75 kA 75 kA 75 kA 75 kA
MP30 H1 3000 75 kA 75 kA 75 kA 75 kA 75 kA 75 kA 75 kA
MP40 H1 4000 100 kA 100 kA 100 kA 100 kA 100 kA 85 kA 85 kA
MP50 H1 5000 100 kA 100 kA 100 kA 100 kA 100 kA 85 kA 85 kA
MP63 H1 6300 (1) 100 kA 100 kA 100 kA 100 kA 100 kA 85 kA 85 kA
High Interrupting Rating
MP08 H2 800 100 kA 65 kA 50 kA 100 kA 100 kA 85 kA 85 kA
MP12 H2 1200 100 kA 65 kA 50 kA 100 kA 100 kA 85 kA 85 kA
MP16 H2 1600 100 kA 65 kA 50 kA 100 kA 100 kA 85 kA 85 k A
MP20 H2 2000 100 kA 75 kA 75 kA 100 kA 100 kA 85 kA 85 kA
MP25 H2 2500 100 kA 75 kA 75 kA 100 kA 100 kA 85 kA 85 kA
MP30 H2 3000 100 kA 75 kA 75 kA 100 kA 100 kA 85 kA 85 kA
MP40 H2 4000 125 kA 100 kA 100 kA 150 kA 125 kA 85 kA 85 kA
MP50 H2 5000 125 kA 100 kA 100 kA 150 kA 125 kA 85 kA 85 kA
MP63 H2 6300 (1) 150 kA 100 kA 100 kA 150 kA 125 kA 85 kA 85 kA
(1) Not UL Listed.
11/98©1995 Square D—All Rights Reserved66
IEC 947-2 Ratings
Auxiliary and Position SwitchesVoltage (V) Auxiliary Switch Overcurrent Ready to Position
Trip Switch Close Switch SwitchesOF O OFSUP SDE PF CE/CD/CT
50/60 Hz 110 15
240 10 10 10 10 10 10
380 10 6 6 5 5 6
480 10 6 6 6
600 6 3 3 3
DC 48 5 3 3 3 3 3
125 3 0.5 0.5 0.3 0.3 0.5
250 3 0.25 0.25 0.15 0.15 0.25
500 0.5
OF: Heavy Duty O: Standard OFSUP: 24 Additional CE: Connected CD: Disconnected CT: Test
Spring Charging MotorRated Voltage (V)
UL 489 Listed IEC 947-2
60 Hz 120 50/60 Hz 100-127
240 200-240
DC 24 DC 24-30
48 48-60
125 100-125
Closing CoilRated Voltage (V)
UL 489 Listed IEC 947-2
60 Hz 120 50/60 Hz 110-127
240 220-250
DC 24 DC 24
48 48
125 125
250 250
Shunt TripRated Voltage (V)
UL 489 Listed IEC 947-2
60 Hz 120 50/60 Hz 110-127
240 220-250
480 440-480
DC 24 DC 24
48 48
125 125
250 250
Undervoltage TripRated Voltage (V)
UL 489 Listed IEC 947-2
60 Hz 120 50/60 Hz 110-127
240 220-250
480 440-480
DC 24 DC 24
48 48
125 125
250 250
Appendix
67©1995 Square D—All Rights Reserved11/98
Notes
11/98©1995 Square D—All Rights Reserved68
Notes
69©1995 Square D—All Rights Reserved11/98
Notes
11/98©1995 Square D—All Rights Reserved70
Notes
71©1995 Square D—All Rights Reserved11/98
Notes
11/98©1995 Square D—All Rights Reserved72
Notes
Square D CompanyPO Box 3069, 3700 Sixth St SWCedar Rapids, IA 52406-3069 USAField Services: 1-800-634-2003www.squared.com
POWERLOGIC, Square D and are registered trademarks of Square D Company.MASTERPACT, COMPACT and MULTI 9 are registered trademarks of Schneider Electric.DIGIPACT is a registered trademark of Merlin Gerin. MODBUS is a registered trademark ofSchneider Automation. All other trademarks are the intellectual property of their respectivecompanies.0631CT9501R11/98—November 98—Printed in USA—© 1998 Square D—All Rights Reserved