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MCCB
Moulded Case Circuit Breaker
T e c h n i c a l C a t a l o g u e
general overview ... 2
feature
- company profile and certifications ... 6
MCCB
- NF series circuit breaker, double repulsion breaking method ... 11
- double number of copper contacts, materials of the NF series ... 12
- method of installation, MCCB cross sectional area,
positive indication & operation ... 13
- suitability for isolation, compliance with standards ... 14
- selection | quick & easy selection table ... 15
- power distribution | technical details ... 16
- characteristic curves | NF series ... 23
- physical dimensions & mounting holes | NF series ... 28
- accessories | phase insulation barriers,
electrical accessories & shunt trip ... 40
- accessories | under voltage device ... 41
- accessories | signal switches, rotary handle ... 42
- accessories | rotary handle ... 43
- accessories | mounting position ... 45
- internal resistance & power loss ... 46
- short circuit table | DC voltage ... 49
- selection table | motor circuit protection ... 50
- selection table | motor selection ... 51
- selection table | installation safety distance requirement ... 53
- selection table | terminal-tightening torque ... 54
- terminal-cable & copper busbar connection data ... 55
MCBs
- BHQ series | fixed type ... 56
- BHP series | plug-in type ... 57
- BHQ & BHP | operating characteristics & dimensions ... 58
notes ... 60
contents
NF seriesThe NF series MCCBs are available from 50AF to 1200AF.
Pole sizes from 1 to 4 are available for the various models.
All NF series MCCBs are suitable for isolation.
250AF
NF250-GP NF250-MANF250-HA NF250-L
10kA (3P)25kA (1P to 4P)50kA (1P to 4P)65kA (3P)
50AF
NF50-MA
10kA (2P & 3P)
100AF
NF100-GP NF100-MANF100-HA NF100-L
10kA (2P & 3P)25kA (1P to 4P)50kA (1P to 4P)65kA (3P)
g e n e r a l o v e r v i e w
2
400AF
NF400-GP NF400-LNF400-HA
25kA (3P & 4P)50kA (3P & 4P)65kA (3P)
600AF & 800AF
NF600-GP NF800-GPNF600-HA NF800-HANF600-L NF800-L
25kA (3P & 4P)50kA (3P & 4P)65kA (3P)
1200AF
NF1200-HA
50kA (3P & 4P)
3
NF series
g e n e r a l o v e r v i e w
4
37-SDMS-01NF100-MA
37-SDMS-01NF250-MA
37-SDMS-01NF400-HA
37-SDMS-01NF600-HA
37-SDMS-01NF800-HA
5
100AFBHP-16kA (1P)
100AFBHP-26kA (2P)
100AFBHP-36kA (3P)
100AFBHQ-16kA (1P)
100AFBHQ-26kA (2P)
100AFBHQ-36kA (3P)
MCB: BHQ & BHP series
37-SDMS-02NF400-HA
37-SDMS-03NF250-MA
f e a t u r e
6
company profile
Since our inception in 1974, our company specializes in manufacturing low
voltage circuit breakers and have a reputation of producing products of
consistent quality and high reliability.
Our manufacturing facilities are certified to the international quality standards of
ISO 9001, while our products are certified by ASTA Certification Services UK and
SIRIM QAS International. With such high standards, our range of circuit breakers
are able to meet your highest demands for quality, safety and reliability.
7
SIRIM QAS certification
f e a t u r e
8
SIRIM QAS certification
9
SIRIM QAS certification
f e a t u r e
10
SASO certification
ICS = ICU 100%
11
NF series circuit breakers
The demand for economical and high performance circuit
breakers is ever increasing in the global market. The NF
series circuit breakers provide a simple and reliable
solution to meet this global demand where quality,
performance and compliance are required.
The NF series circuit breakers have been engineered
to provide effective protection to low voltage power
distribution systems. The NF series is a complete range
of MCCB’s from 10A to 1200A with 1, 2, 3 and 4 pole
versions. An extensive range of electrical accessories is
also available.
double repulsion breaking method
The double repulsion method uses a
“reverse-loop” of current (I) flowing in
essentially opposite directions (see figure).
This creates a repulsion action and results
in a greater opening force (Fm) between
the fixed and moving contacts. This force
also assists to rapidly extinguish the arc,
thereby causing the moving contacts to
open faster. A faster breaking time is
achieved with this design.
moving contacts
fixed contact
f e a t u r e
12
double number of contact coppers
For the NF600 and above circuit breakers,
double moving contacts are used instead
of a single contact. This additional moving
contact improves the short circuit breaking
performance and reduces contact wear.
materials of the NF series
The design of the NF series circuit breakers makes it
suitable to be used in hot and humid climates. The
material used for the circuit breaker casing
consists of synthetic resins reinforced with
glass fibers. Furthermore, the metal parts
used in the breakers are chemically treated
to protect against corrosion. The external
copper terminals are tin-plated to prevent
oxidation.
double moving contacts in NF1200
13
method of installation
The NF series circuit breakers
can be installed in vertical or
horizontal position without any
impact on its performance or
de-rating of characteristics.
MCCB cross sectional area
positive indication & operation
horizontal vertical
The circuit breaker operating handle is designed to indicate the exact position of
its moving contacts. Its “trip-free” operating mechanism cannot indicate that the
breaker is ON if the moving contacts are in the OFF position. If the breaker trips
due to an electrical fault or overload the handle will be in between the ON and
OFF position. This is the TRIP position. To switch the breaker ON after tripping,
the handle position must be switched to OFF position first and so to reset the
breaker and then switch to the ON position.
BA
FD E
C
Parts Index for cross-sectional area of MCCBA – MCCB casing made of high-impact BMC material reinforced with
glass fibres, providing a safe and strong housing in the event ofbreaking high-fault currents.
B – Trip-free mechanism ensuring positive operation and isolationsuitability. Designed for long service life and high number ofoperating cycles. Metal parts in mechanism are chemically treated towithstand harsh tropical weather conditions.
C – Arc chutes with predefined steel plates arrangement, provide highbreaking capabilities.
D – Fixed and moving contacts utilizing the “reverse loop” currentmethod, creates a repulsion force thus rapidly extinguishing the arc.
E – Common trip mechanism to ensure breaking of all poles even whenthe fault occurs at a particular pole.
F – Trip release consists of thermal (bi-metal) and magnetic devicessuitable for use in AC or DC supply voltages.
f e a t u r e
14
suitability for isolation
In compliance with IEC 60947-2 standard, NF series circuit breaker guarantees no
leakage currents and
over-voltage withstand
between the supply and
load terminals when its
moving contacts are in
the open position.
compliance with standards
The NF series circuit breakers have been designed to meet international standards,
complying with the following standards:
1. IEC 60947-2: International Electro 8. SEC Distributors: Saudi Electricity
Committee Standard Company, Distribution Materials
2. BSEN 60947-2: British Standard Specifications Prequalified Manufacturer
European Norm 9. SASO: Saudi Standards, Metrology &
3. JIS C 8201-2: Japan Industrial Standard Quality Organization
4. GB 14048-2: China Standard 10. Housing & Development Board, Singapore
5. CNS 14816-2: Taiwan Standard 11. Ministry of Electricity & Water, Kingdom
6. CE: Conformity European of Bahrain
7. SIRIM: Malaysia 12. Jabatan Perkhidmatan Elektrik Kementerian
Pembangunan, Negara Brunei Darussalam
test trip button isolation
15
selection | quick & easy table65502510
NF50-MA
NF100-GP
NF100-MA NF100-LNF100-HA
NF100-GP
NF250-GP NF250-MA NF250-HA NF250-L
NF400-GP NF400-HA NF400-L
NF600-GP NF600-HA NF600-L
NF800-GP NF800-HA NF800-L
NF1200-HA
RatedCurrent
In (A)
10
15
20
30
40
50
60
75
80
100
125
150
160
175
200
225
250
250
300
350
400
500
600
700
800
1000
1200
Interrupting Capacity Icu (kA) Sym at 415 Vac
Notes: - denotes available.
p o w e r d i s t r i b u t i o n
16
Rated Short CircuitBreaking Capacity: (kA)
Rated Service Short CircuitBreaking Capacity: I cs = % I cu
600V
DC
400V
500V
440V
415V
380V
230V
IEC 60947-2
technical details | electrical characteristics
NF100NF50
50AF 100AF
NF250
250AF
10 15 20
30 40 50
2 3
690
8
MA
5
7.5
10
10
10
15
25
5
100
7.5
10
15
25
5
A
3
20000
model Code
Ampere Frame (AF)
Rated Current: In (A)at Ambient Temp 50˚C
Number of Poles Available
Rated Insulation Voltage: U i(V)
Rated Impulse withstandVoltage: U imp (kV)
Rated Ultimate Short CircuitBreaking Capacity: I cu (kA)
10 15 20 30 40
50 60 75 80 100
1 2 3 4
690
8 8 8 8
GP MA HA L
5 10 10 35
7.5 15 40 50
10 25 50 65
10 25 50 65
10 25 50 65
15 30 60 100
25 50 85 125
5 10 20 40
100 100 100 100
690
8 8 8 8
GP MA HA L
5 10 10 35
7.5 15 40 50
10 25 50 65
10 25 50 65
10 25 50 65
15 30 60 100
25 50 85 125
5 10 20 40
100 100 100 100
7.5 10 30 50
10 22 50 65
15 30 50 100
25 50 85 125
7.5 10 30 50
10 22 50 65
15 30 50 100
25 50 85 125
5 10 20 40
A A A A
3 3 3 3
15000
125 150 160 175
200 225 250
3 4
5 10 20 40
A A A A
3 3 3 3
15000
690V
250V
Suitable for Isolation
Utilization Category
Pollution Degree
No. of Electrical Operations
440V
380V
220V
JIS C 8201-2(sym)
DC
250V
17
Notes: - denotes available.
Rated Short CircuitBreaking Capacity: (kA)
Rated Service Short CircuitBreaking Capacity: I cs = % I cu
600V
DC
400V
500V
440V
415V
380V
230V
IEC 60947-2
technical details | electrical characteristics
NF600 & NF800NF400
400AF 800AF
NF1200
1200AF
1000 1200
3 4
690
8
HA
10
40
50
50
50
60
85
40
100
30
50
50
85
40
A
3
8000
model Code
Ampere Frame (AF)
Rated Current: In (A)at Ambient Temp 50˚C
Number of Poles Available
Rated Insulation Voltage: U i(V)
Rated Impulse withstandVoltage: U imp (kV)
Rated Ultimate Short CircuitBreaking Capacity: I cu (kA)
250 300
350 400
3 4
690
8 8 8
GP HA L
10 10 35
22 40 50
25 50 65
25 50 65
25 50 65
30 60 100
50 85 125
20 40 40
100 100 100
690
8 8 8
GP HA L
10 10 35
22 40 50
25 50 65
25 50 65
25 50 65
30 60 100
50 85 125
20 40 40
100 100 100
18 30 50
25 50 65
30 50 100
50 85 125
18 30 50
25 50 65
30 50 100
50 85 125
20 40 40
A A A
3 3 3
11000
500 600 & 700 800
3 4
20 40 40
A A A
3 3 3
11000
690V
250V
Suitable for Isolation
Utilization Category
Pollution Degree
No. of Electrical Operations
440V
380V
220V
JIS C 8201-2(sym)
DC
250V
p o w e r d i s t r i b u t i o n
18
technical details
NF250-MANF100-MA
100AF 250AF
NF600-HA
600AF
NF400-HA
400AF
10 15 20 30 40
50 60 75 80 100
125 150 160 175
200 225 250
250 300
350 400500 630
3
750
8
3 33
750 750750
8 88
model Code
Ampere Frame (AF)
Rated Current: In (A)at Ambient Temp 55˚C
Number of Poles Available
Rated Insulation Voltage: U i(V)
Rated Impulse withstandVoltage: U imp (kV)
Rated Ultimate Short CircuitBreaking Capacity: I cu (kA)
37-SDMS-01
electrical characteristics
No. of Electrical Operations
Pollution Degree
Utilization Category
Suitable for Isolation
Notes: - denotes available.
Rated Service Short CircuitBreaking Capacity: I cs = % I cu
415V
220V
IEC 60947-225 50
50 85
100 100
A A
3 3
15000 11000
25 50
380V 30 6030 60
50 85
100
A
3
15000
100
A
3
11000
Rated Current: In (A)at Ambient Temp 55˚C
19
NF250-MANF800-HA
800AF 250AF
NF400-HA
400AF
model Code
Ampere Frame (AF)
700 800
3
750
8
125 150 160 175
200 225 250
3
750
8
250 300
350 400
3
750
8
Number of Poles Available
Rated Insulation Voltage: U i(V)
Rated Impulse withstandVoltage: U imp (kV)
Rated Ultimate Short CircuitBreaking Capacity: I cu (kA)
37-SDMS-01 37-SDMS-03 37-SDMS-02
technical detailselectrical characteristics
Pollution Degree
No. of Electrical Operations
Notes: - denotes available.
415V
220V
50 50
85 85
25
380V 60 6030
50
Suitable for Isolation
Rated Service Short CircuitBreaking Capacity: I cs = % I cu
IEC 60947-2
100
A
3
11000
100
A
3
15000
100
A
3
11000
Utilization Category
technical detailsmechanical characteristics & accessories
p o w e r d i s t r i b u t i o n
20
90 140
30 44
156 257
210 390
132 194
86 104
103 134
stirrup saddle
20000 20000
1.5 6.5
-
- -
-
- -
105
35
166
210
126
104
123
stirrup
20000
2.4
-
-
-
-
210
70
275
500
243
104
155
saddle
20000
9.5
-
-
a
b*
aa
c
ca
bbb
bb
Wid
thLe
ngth
Dep
thAc
cess
orie
s
Type of Terminals
No of Mechanical Operations
Weight (kg)Operating Handle
LockTerminal Covers
Mounting ScrewsPhase Barrier
Cable LugTerminal Shrouds
With
out T
erm
inal
Cov
er b
(mm)
bb
C
ccaa
aa
ON
OFF100 LOCKED
UNLOCKED
L
CL CL^
NF250-MANF100-MA NF600-HANF400-HAmodel Code
37-SDMS-01
210 140
70 44
275 257
500 277
243 194
104 104
155 134
saddle saddle
20000 20000
10.5 5.5
-
-
-
-
105
35
166
177
126
104
123
stirrup
20000
2.2
-
-
-
-
a
b*
aa
c
ca
bbb
bb
Wid
thLe
ngth
Dep
thAc
cess
orie
s
Type of Terminals
No of Mechanical Operations
Weight (kg)Operating Handle
LockTerminal Covers
Mounting ScrewsPhase Barrier
Cable LugTerminal Shrouds
With
out T
erm
inal
Cov
er b
(mm)
bb
C
ccaa
aa
ON
OFF100 LOCKED
UNLOCKED
L
CL CL^
model CodeNF250-MANF800-HA NF400-HA
37-SDMS-01 37-SDMS-03 37-SDMS-02
* without Terminal Cover; ^ with Terminal Cover.
Notes: - denotes available.
21
mechanical characteristics
technical details
NF100NF50
50AF 100AF
NF250
250AF
–
model Code
Ampere Frame (AF)
Fixed thermal, Fixed Magnetic 10 x Ith
Fixed thermal, Adjustable Magnetic
thermomagnetic trip release
MARated Ultimate Short Circuit
Breaking Capacity: I cu (kA) GP MA HA L GP MA HA L
1 2 3 42 3
50 75
130 130
60 60
77 77
110 110
– 25
42 60 90 120
155 155 155 155
68 68 68(80) 68
90 90 90(102) 90
132 132 132 132
– – 30 30
1 3 4
48 105 140
165 165 165
68 68(80) 68
92 92(104) 92
126 126 126
35 35 35
M5 clampterminal screw
20000
Number of Poles (P)
Type of Terminals
No of Mechanical Operations
M8 screw
20000
M8 screw
20000
0.4 0.5Weight (kg) 0.5 0.7 1.0(1.2) 1.4 0.7 1.5(1.6) 1.9
–
–
–
–
–
–
Shunt Trip Device
Under Voltage Trip Device
Auxiliary Switch
Alarm Switch
Auxiliary + Alarm Switch
Rotary Handle
accessories
Notes: All L-type breakers are only available in the 3-pole version; ( ) denotes for L-type.
- denotes available; however, all accessories are not available for 1-pole models.
aa
a
b
c
ca
bb
p o w e r d i s t r i b u t i o n
22
mechanical characteristics
technical details
NF600 & NF800NF400
400AF 800AF
NF1200
1200AF
model Code
Ampere Frame (AF)
Fixed thermal, Fixed Magnetic 10 x Ith
Fixed thermal, Adjustable Magnetic
thermomagnetic trip release
GP HA LRated Ultimate Short CircuitBreaking Capacity: I imp (kA) GP HA L HA
Shunt Trip Device
Under Voltage Trip Device
Auxiliary Switch
Alarm Switch
Auxiliary + Alarm Switch
Rotary Handle
accessories
Notes: All L-type breakers are only available in the 3-pole version; ( ) denotes for L-type.
- denotes available.
20000No of Mechanical Operations 20000 20000
5.5(6.0) 7.2Weight (kg) 10.0(11) 12.0 15.0 19.0
3 43 4
140 196
257 257
103 103
155 155
194 194
44 44
210 280
275 275
103 103
155 155
243 243
70 70
3 4
210 280
406 406
140 140
250 250
375 375
70 70
M12 Bolt
Number of Poles (P)
Type of Terminals M12 Bolt M12 Bolt
aa
a
b
c
ca
bb
23
c h a r a c t e r i s t i c s
tripping curve temperature characteristic
tripping curve temperature characteristic
NF50-MA | characteristic curves
145
140
135
130
125
120
115
110
105
100
9510 15 20 25 30 35 40 45 50 55 60
Rate
d am
bien
t
40~50A
10A~30A
Instantaneous trip
NF100-GP, MA & HA | characteristic curves
c h a r a c t e r i s t i c s
24
NF250-GP, MA & HA | characteristic curves
NF400-GP & HA | characteristic curves
130
120
110
100
90
10 20 30 40 50 60 7080
Rated ambient 50°C
Curr
ent r
atin
g (%
)Ambient temperature (°C)
Rate
d am
bien
t
tripping curve temperature characteristic
tripping curve temperature characteristic
25
NF600/800-GP & HA | characteristic curves
NF1200-HA | characteristic curves
Frame size: 800AF
NF600
NF800
tripping curve temperature characteristic
tripping curve temperature characteristic
c h a r a c t e r i s t i c s
26
NF100-L | characteristic curves
NF250-L | characteristic curves
tripping curve
tripping curve
27
NF400-L | characteristic curves
NF600/800-L | characteristic curves
tripping curve
tripping curve
p h y s i c a l d i m e n s i o n s & m o u n t i n g h o l e s
28
NF50-MA | front connection
2-pole 3-pole
2-pole 3-pole
29
NF100-GP, MA & HA | front connection
2-pole 3-pole
2-pole 3-pole
4-pole
4-pole
p h y s i c a l d i m e n s i o n s & m o u n t i n g h o l e s
30
NF250-GP, MA & HA | front connection
3-pole
3-pole
4-pole
4-pole
31
NF400-GP & HA | front connection
3-pole 4-pole
3-pole
4-pole
p h y s i c a l d i m e n s i o n s & m o u n t i n g h o l e s
32
NF600/800-GP & HA | front connection
3-pole 4-pole
3-pole
4-pole
33
NF1200-HA | front connection
Insulation barrier(removable)
Insulation barrier(removable) Bolt
M12x50
ConductorMountinghold
Mountinghold11
540
6
406
346
95
18.5
15
17
50
133.5140
190
250
346
95
78
43
8
15
328
15
32
140
210
70210
280
80
13 13
N NeutralPole
375
70 70
97
803 Pole
4 Pole
R11.5
M8 Screwor 10mm
3-pole 4-pole
p h y s i c a l d i m e n s i o n s & m o u n t i n g h o l e s
34
NF100-L | front connection
NF250-L | front connection
3-pole
3-pole
3-pole
3-pole
35
NF400-L | front connection
NF600/800-L | front connection
3-pole
3-pole
3-pole
3-pole
p h y s i c a l d i m e n s i o n s & m o u n t i n g h o l e s
36
37-SDMS-01NF100-MA | front connection
37-SDMS-01NF250-MA | front connection
103906030
22
15
61
32
50
.2
908683
30 M4x0.7 threador 5 mm-dia. hold
Breaker
13
2
OFF100
UNLOCKED
LOCKED
ON
CL CL CL
CLCL
Ø 4
.5
Ø 8
.5
M4x0.7 threador 5 mmdia. hold
CL
CL CL
CL
1057035
99
24.5
104107.5123
12
6
16
6
10
25
0
UNLOCKEDON
OFF200 LOCKED 1
26
35
Breaker
Ø 4.5
Ø 7
37
37-SDMS-01NF400-HA | front connection
37-SDMS-01NF600-HA | front connection
UNLOCKED
400 LOCKED
OFF
Mountinghold
OFF
ON
162140
63.4 63.4
25
7
10
2.2
90
.4
39
.5
43
19
431
.59
0.4CL
CL
CL
958 37
44
19
4
47
97.5104113134
M10 Hex.head Screw
M6 Screw or7mm dia. hold
M20 SocketSet Screw
CL
CL
Breaker
Ø 7Ø 12.5
70M6 Screw or7mm dia. hold
Breaker
CL
CL
24
3UNLOCKED
LOCKED630
OFF
OFF
ON
102
27
5 (M
ax. w
itho
ut c
over
)
210mm (Max.)
5
155mm (Max.)1071049794.5
82
10
2
Ø 8
Ø 14
15±0.2
Ø 4
500A: t= 6 m/m630A: t= 8 m/m800A: t= 12 m/m
t
CL
CL CL
p h y s i c a l d i m e n s i o n s & m o u n t i n g h o l e s
38
37-SDMS-01NF800-HA | front connection
70M6 Screw or7mm dia. hold
Breaker
CL
CL
24
3UNLOCKED
LOCKED800
OFF
OFF
ON
102
27
5 (M
ax.
wit
hout
cov
er)
210mm (Max.)
5
155mm (Max.)1071049794.5
82
10
2
Ø 8
Ø 14
15±0.2
Ø 4
500A: t= 6 m/m630A: t= 8 m/m800A: t= 12 m/m
t
CL
CL CL
39
37-SDMS-02NF400-HA | front connection
Ø 12.5 Ø 7
134
44
19
4
14087
43.5
25
7
10
2.2
90
.43
9.5
19
431
.59
0.4
11310497.595
47
CL CL
CLCL
CL
Breaker
Mountinghold
M6 Screw or7mm dia. hold
M10 Hex. head screw
400
OFF
ON
OFF
Terminal Shroud
Terminal Shroud
Phase Barrier
37-SDMS-03NF250-MA | front connection
105
35
16
6
10
2
12310710499
50
70
12
6CL
CL
CL200
OFF
ON
Ø 7
Ø 4.5
24.5M8 Hex. socket
head screwTerminal Shroud
Terminal Shroud
Phase Barrier
M8 Hex. sockethead screw
M4x0.7 threador 5 mm-dia. hold
Breaker
35
CL
12
6
a c c e s s o r i e s
40
phase insulation barriers
Inter phase barriers are provided as standard. The use
of the inter phase barriers is
necessary to increase the
clearance distances between
phases to prevent electrical
faults during the operation
of the circuit breaker.
electrical accessories & shunt trip
All electrical accessories supplied for the breaker are pre-
wired. Accessories such as Shunt Trip, Under Voltage Trip,
Alarm Switch, Auxiliary Switch and combination Alarm and
Auxiliary Switch can be fitted into the breaker accessory
compartments. Please refer to the table in page 31 for the
accessories installation guide.
Shunt Trip Device
The Shunt Trip device opens the circuit breaker by means
of an electrical signal. Voltages between 70% and 110% of
the coil voltage rating will operate the shunt trip device.
All Shunt Trip devices are factory fitted with a cut-off
supply switch.
baModel
NF50 59 59
NF100 59 59
NF250 62 100
NF400 95 116
NF600 95 116
NF800 top95 116
NF1200 95 116
a
bdimensions of phase
barrier insulators in mm
41
< 15 < 15 < 15 8 to 15 8 to 15 8 to 15
under voltage trip device
The Under Voltage Trip device will open the circuit breaker contacts when the supply
voltage to the coil drops below 70% of its voltage rating.
After tripping, the circuit breaker can be closed manually
again when the supply voltage is 85% of its coil voltage
rating or more.
The Under Voltage Trip device is always energized during
normal conditions when supply voltage is healthy.
NF1200NF600NF400NF250NF100NF50
Coil Power Consumption (VA)50 / 60 Hz
Coil Voltage
200 200120 20 (100V)
50 (200V)
120 120
200 200
200 200
120 (330V)
170 (450V)
200
10
8 to 15
NF800
200
200
200
200
10 70
120
10
120 120
50
AC 110 - 240
AC 100 - 450
AC 200 - 240
AC 380 - 450
AC 380 - 550
DC 100 - 125
AC Coil Voltage Consump (VA) Trip Time (ms)Model
5 < 30
5 5 to 30
380-415 440-480
400-440
100-110 200-220
100-110 200-220
5 5 to 30
5 6 to 35
400-440
380-450
100-110 200-220
100-120 200-240
NF250 & below
NF400
NF800
NF1200
Trip Time (ms)
Note: Other voltages can be supplied on demand.
a c c e s s o r i e s
42
signaling switches
The Signaling switches allow the breaker
status information to be obtained remotely.
The signaling switch consists of several dry
contacts with both normally open (N.O.) and
normally closed (N.C.) positions.
Auxiliary Switch - Provides breaker ON and
OFF status information.
Alarm Switch - Provides breaker TRIP status
information.
Auxiliary + Alarm Switch - Provides breaker
ON, OFF and TRIP status information.
rotary handle | mechanism
The breaker mounted rotary handle mechanism allows the user to easily switch the
breaker ON by a rotating action.
The rotary handle mechanism is equipped with a safety device that prevents the
panel door from being open when the breaker is in ON position. A bypass screw is
provided for manual intervention when breaker is in ON position.
Pad locking facility is available on the rotary handle. The handle can be pad locked
when the breaker is in OFF position.
Please refer to the abovecircuit diagram for the switchterminal codes in order toobtain different contactpositions, such as N.O. andN.C. to suit the application.
Auxiliary Switch
Alarm Switch
43
Drilling Plan
ExternalDimensions
Figure Dimensions (mm) MountingScrewsType Breaker Type
Noof
Pole
a
b
c
d
e
e
A B C D
95
105
117
107
119
183
25
30
44
70
111
132
(116)
35126
(145)
194
243
M4 x 0.7
screw
or ø 5
M6
screw
or ø 7
(X)
breakers
mounting
screws (2pcs)
(Y) operating
handle
mounting
screws (2pcs)
(X) (Y)
breakers
mounting
screws (4pcs)
AC-NF-RHN0
AC-NF-RHN1
AC-NF-RHN2
AC-NF-RHN3
AC-NF-RHN4
NF50-MA
NF100-GP MA HA
NF100-L
EG100-MA HA
NF250-GP MA HA
NF250-L
EG250-MA HA
NF400-GP HA L
NF600-GP HA L
NF800-GP HA L
NF1200-HA
3P
3P
4P
3P
4P
3P 4P
3P
4P
rotary handle | external dimensions
rotary handle | drilling plan
Figure (a)
Figure (c) Figure (d) Figure (e)
Note All rotary handles are supplied with M4 x 0.7 screws and self-tapping ø 5mm screws.
Figure (b)
a c c e s s o r i e s
44
rotary handle | appearance
A direct rotating operating handle has a standard safety device which prevents the
breaker from closing as long as the cover is open. It indicates the tripping of the
breaker even in ON-lock position, but only in cases when a single padlock (35mm)
is used. The degree of protection, in accordance with IEC529, is IP3X (or IP5X with
provision of dustproof packing).
The use of therotary handlemechanismincreases the IPrating of the breaker
The figure above shows the relationshipbetween the hinge and breaker viewedfrom the load side of the breaker.
Left hingeX1
Left hingeH
Center of hinge & BreakerType
0 or more(5H + 100)
or more
0 or more(8H + 100)
or more
Right hingeX2
Right hingeH
Less than 10
10 or more
170 or more
(5H + 120) or more
0 or more (4H + 70) or more
AC-NF-RHN0 to
AC-NF-RHN2
AC-NF-RHN3 to
AC-NF-RHN4
45
mounting position | internal accessory
NF1200HA
NF600/800GP HA L
NF400GP HA L
NF250GP MA HA L
NF100GP MA HA L
NF50MA
MCCB modelsAccessories
R1 & 2 R1 & 2
R1 & 2 R1 & 2
R1 & 2 R1 & 2
R1 & 2 R1 & 2
– R1 & 2
– R1 & 2
L1, L2, L3 L1, L2, L3
L1, L2, L3 L1, L2, L3
L1, L2, L3 L1, L2, L3
L1 & L2 L1, L2
L1 & L2 L1, L2
L1 & L2 L1, L2
–
–
L1 & L2
L1 & L2
– L1 & L2
Shunt Trip Coil
(STC)
Under VoltageTrip (UVT)
Auxiliary Switch(AUS)
Alarm Switch(ALS)
Auxiliary +Alarm Switch
(AAS)
Notes
1) It is NOT possible to install both UVT and STC in the same MCCB.
2) For NF600 onwards, it is possible to install up to a maximum of 4 Auxiliary. Switches or 2 Alarm switches.
3) UVT requires a voltage module that is installed on the right side lead wire terminal.
L = Left compartment; R = Right Compartment
Accessory compartment slot markings
right side
left side
r e s i s t a n c e & p o w e r t a b l e
46
NF250-MA
LossW
ResistanceuΩ
NF100-MA
LossW
ResistanceuΩ
8700
6200
3570
1980
1480
1.6 7200 0.7
2.0 6700 1.5
2.5 6000 2.4
3.2 3100 2.8
3.4 1990 3.1
3.7 1480
1200
1100
980
770
3.7
4.3
6.2
6.5
7.7
575 9.0
11.8
12.1
14.6
16.9
525
395
365
335
NF800-GP
internal resistance & power lossLossW
ResistanceuΩ
NF600-GP
LossW
ResistanceuΩ
NF400-GP
LossW
ResistanceuΩ
NF250-GP
LossW
ResistanceuΩ
NF100-GP
LossW
ResistanceuΩ
NF50-MA
ResistanceuΩ
LossW
Type
In A
10A 60000 6.0
58000 1.3
45000 1.8
32000 2.9
19000 3.0
1650
1175
1120
1010
820
4.1
4.2
6.3
7.1
8.2
450 7.0
9.0
10.7
12.4
13.2
196 12.3
162 14.6
148 18.1
120 19.2
100
90
25.0
32.4
70
60
34.3
38.4
400
350
310
260
15A
20A
30A
40A
50A
60A
75A
80A
100A
125A
150A
10.94259.7380160A
175A
200A
225A
250A
300A
350A
400A
500A
600A
700A
800A
15600
47
NF1200-HA
internal resistance & power lossLoss
WResistance
uΩ
NF800-HALoss
WResistance
uΩ
NF600-HALoss
WResistance
uΩ
NF400-HALoss
WResistance
uΩ
NF250-HALoss
WResistance
uΩ
NF100-HALoss
WResistance
uΩ
Type
In A
31500
33500
17000
8500
6000
3300
3.2
7.5
6.8
7.7
9.6
8.2
2000 7.2
1500
1200
8.4
8.8
950 9.5
775 12.1
725 16.3
595 18.1
575 23.0
535 27.0
251 15.7
188 16.9
188 23.0
138 22.1
220 51.0
210 75.6
120 58.8
105 67.2
55 55.0
45 64.8
10A
15A
20A
30A
40A
50A
60A
75A
80A
100A
125A
150A
160A
175A
200A
225A
250A
300A
350A
400A
500A
600A
700A
800A
1000A
1200A
680 17.4
r e s i s t a n c e & p o w e r t a b l e
48
internal resistance & power lossNF800-L
LossW
ResistanceuΩ
NF600-LLoss
WResistance
uΩ
NF400-LLoss
WResistance
uΩ
NF250-LLoss
WResistance
uΩ
NF100-LLoss
WResistance
uΩ
Type
In A
31500
33500
17500
9000
7000
4500
3.2
7.5
7.0
8.1
11.2
11.3
2200 7.9
1800
1500
10.1
11.2
1350 13.5
775 12.1
725 16.3
595 18.1
575 23.0
535 27.0
290 18.1
195 17.5
185 22.7
175 28.0
220 51.0
210 75.6
120 58.8
105 67.2
10A
15A
20A
30A
40A
50A
60A
75A
80A
100A
125A
150A
680 17.4160A
175A
200A
225A
250A
300A
350A
400A
500A
600A
700A
800A
49
DC voltage | time constant 10ms or below
d c s h o r t c i r c u i t t a b l e
Model Pole 48V Icu/Ics 125V Icu/Ics 250V Icu/Ics 400V Icu/Ics 550V Icu/Ics 600V Icu/Ics
NF50-MA2
3
40 / 20
40 / 20
41 / 20
42 / 20
40 / 20
NF100-GP
1
2
3
NF100-MA
NF100-HA
NF100-L
NF250-GP
NF250-MA
NF250-HA
1
2
3
4
1
2
3
4
3
1
2
3
4
1
2
3
4
3
1
2
3
NF250-L
NF400-GP
NF400-HA
NF400-L
NF600 /
NF800-GP
NF600 /
NF800-HA
NF800-L
NF1200-HA
3
4
3
4
3
3
4
3
4
3
3
4
50 / 25
50 / 25
50 / 25
50 / 25
100 / 50
100 / 50
100 / 50
100 / 50
150 / 75
50 / 25
50 / 25
50 / 25
50 / 25
100 / 50
100 / 50
100 / 50
100 / 50
150 / 75
40 / 20
40 / 20
40 / 20
80 / 40
80 / 40
100 / 50
100 / 50
150 / 75
80 / 40
80 / 40
100 / 50
100 / 50
150 / 75
100 / 50
100 / 50
15 / 8
15 / 8
15 / 8
15 / 8
15 / 8
30 / 15
30 / 15
30 / 15
30 / 15
80 / 40
80 / 40
80 / 40
80 / 40
100 / 50
30 / 15
30 / 15
30 / 15
30 / 15
80 / 40
80 / 40
80 / 40
80 / 40
100 / 50
15 / 8
15 / 8
15 / 8
40 / 20
40 / 20
80 / 40
80 / 40
100 / 50
40 / 20
40 / 20
80 / 40
80 / 40
100 / 50
80 / 40
80 / 40
7.5 / 4
7.5 / 4
7.5 / 5
7.5 / 6
7.5 / 7
15 / 8
15 / 8
15 / 8
15 / 8
40 / 20
40 / 20
40 / 20
40 / 20
50 / 25
15 / 8
15 / 8
15 / 8
15 / 8
40 / 20
40 / 20
40 / 20
40 / 20
50 / 25
7.5 / 4
7.5 / 4
7.5 / 4
20 / 10
20 / 10
40 / 20
40 / 20
50 / 25
20 / 10
20 / 10
40 / 20
40 / 20
50 / 25
40 / 20
40 / 20
6 / 3
6 / 3
10 / 5
10 / 5
25 / 13
25 / 13
35 / 18
10 / 5
10 / 5
25 / 13
25 / 13
35 / 18
6 / 3
13 / 8
13 / 8
25 / 13
25 / 13
35 / 18
13 / 8
13 / 8
25 / 13
25 / 13
35 / 18
25 / 13
25 / 13
8 / 4
18 / 9
8 / 4
18 / 9
10 / 5
18 / 9
10 / 5
18 / 9
18 / 9
8 / 4
18 / 9
8 / 4
18 / 9
10 / 5
18 / 9
10 / 5
18 / 9
18 / 9
s e l e c t i o n t a b l e
50
Interrupting Capacity Icu (kA) Sym
motor circuit protection 65
NF100-L
NF250-L
NF400-L
NF800-L
50
NF100-HA
NF250-HA
NF400-GP NF400-HA
NF600-HA
NF800-HA
25
NF100-MA
NF250-MA
10
NF50-MA
NF100-GP
NF250-GP
NF600-GP
NF800-GP
MotorCapacity
[kW at 400/440]
Motor Full-load
Current [A]
MCCB In [A]
0.37
0.55
0.75
1.1
1.5
2.2
3
4
5.5
7.5
11
15
18.5
22
30
37
45
55
75
90
110
132
160
200
250
290
315
355
1.1
1.5
1.9
2.8
3.5
5
6.6
8.6
11.5
15
22
29
36
42
56
68
83
98
135
158
193
232
282
349
430
520
545
610
10
10
10
10
10
10
15
15
20
30
40
40
50
60
75
100
125
150
200
225
250
300
350
400
600
700
700
800
3-phase motor | 400V 440V 50 / 60Hz
51
Motor Full-Load Current (A)
3 ø 415VRated Current (A)
Wire Size (mm2)
Rated Current (A)
Wire Size (mm2)
Wire Size (mm2)
Rated Current (A)
Motor Full-Load Current (A)
3 ø 220V
motor selection | direct-online-starter
1.1 2.1
10
2
0.65
10
2
0.58
10
2
10
2
1.2
10
2
1.1
10
2.4 3.3 4.4 5.9 8.4 11 13.6 2015.5
10
2
1.4
10
2
1.3
10
10 10 15 20 30 30 5030
2 2 2 2 2 5.5 5.55.5
1.9 2.5 3.4 4.8 6.4 7.9 11.59
10 10 10 10 15 15 20 30
2 2 2 2 2 2 5.55.5
1.8 2.4 3.2 4.5 5.9 7.3 10.57.7
10 10 10 10 15 15 2015
2 2 2 2 2 2 2 2 5.52
MotorRatings
5.543.732.21.51.10.750.550.370.18kW
HP 1/4 1/2 3/4 1 1.5 2 3 4 5 5.5 7.5
Motor Full-Load Current (A)
3 ø 380V
Motor Full-Load Current (A)
3 ø 415VRated Current (A)
Wire Size (mm2)
Rated Current (A)
Wire Size (mm2)
Wire Size (mm2)
Rated Current (A)
Motor Full-Load Current (A)
3 ø 220V
26.5 38
60
14
15
30
5.5
14
30
5.5
75
22
22
50
8
20.5
50
50 61
100
38
29
60
14
27
60
100
38
36
75
22
33
75
8 14 22
71 97
125
60
41
100
38
38
75
150
60
56
100
38
52
100
22 38
120 145
175
80
70
150
60
65
125
200
100
84
125
60
77
125
60 60
180 240
225
125
104
150
80
95
150
400
200
143
200
100
130
175
80
290
500
200
170
225
125
154
200
100100
MotorRatings
9075554537302218.515117.5kW
HP 10 15 20 25 30 40 50 60 75 100 125
Motor Full-Load Current (A)
3 ø 380V
Short Circuit protection of electric motors
The NF series circuit breakers are suitable to combine with motor starters. As defined in IEC 60947-4
standards, the starter switching device, usually a magnetic contactor, must be coordinated with the
equipment capable of providing short circuit protection for circuit wiring/cables.
The common starting methods for asynchronous squirrel-cage induction motors which the NF series can be
used in combination are the direct-online-starters and star-delta-starters.
The following selection tables, illustrating the above, shows the suitable breaker ratings that can
accommodate motor starting currents. When more than one motor is connected to a branch circuit, the
sum of the motor rated current equals to the rated current of the breaker.
Please note that the breaker selection shown in the tables are subjected to the following: only 1 motor to be installed in the circuit andthe starting current is less than 6 times of motor full load current.
s e l e c t i o n t a b l e
52
Motor Full-Load Current (A)
3 ø 380V
Motor Full-Load Current (A)
3 ø 415V
Rated Current (A)
Wire Size (mm2)
Rated Current (A)
Wire Size (mm2)
Wire Size (mm2)
Rated Current (A)
Motor Full-Load Current (A)
3 ø 220V
motor selection | direct-online-starter
motor selection | star-delta-starter
349 411
600
200
202
400
150
185
300
150
700
325
238
400
200
218
400
500 625 780 980
800
325
290
500
200
260
500
360 450 570
600 800 1000
200 325 325
330 415 520
600 700 800
200 200 200 325 325
MotorRatings
315250200160132110kW
HP 150 180 220 270 340 420
Motor Full-Load Current (A)
3 ø 415V
Rated Current (A)
Wire Size (mm2)
Rated Current (A)
Wire Size (mm2)
Wire Size (mm2)
Rated Current (A)
Motor Full-Load Current (A)
3 ø 220V
20 28.5
50
8
11.5
30
3.5
10.5
30
3.5
50
8
15
30
5.5
14
30
5.5
38 50
75
22
22
50
8
20.5
50
8
100
22
29
60
14
27
60
14
61 71
125
38
35
75
22
33
75
22
150
38
41
100
38
41
100
22
97 120
200
60
56
100
38
52
100
38
225
60
70
150
50
65
150
50
145 180
300
80
84
175
50
77
175
50
240
400
100
143
225
80
130
225
80
400
80
104
225
60
95
200
60
MotorRatings
75554537302218.515117.55.5kW
HP 7.5 10 15 20 25 30 40 50 60 75 100
Motor Full-Load Current (A)
3 ø 380V
Please note that the breaker selection shown in the tables are subjected to the following: only 1 motor to be installed in the circuit andthe starting current is less than 6 times of motor full load current.
53
110
Motor Full-Load Current (A)
3 ø 415VRated Current (A)
Wire Size (mm2)
Rated Current (A)
Wire Size (mm2)
Wire Size (mm2)
Rated Current (A)
Motor Full-Load Current (A)
3 ø 220V
motor selection | star-delta-starter
290
500
150
170
300
100
154
300
80
MotorRatings
90kW
HP 125
Motor Full-Load Current (A)
3 ø 380V
349
600
150
202
400
125
185
300
100
150
160
411
800
200
238
400
125
218
400
125
132
180
500
1000
250
290
600
150
260
400
150
220
NF50
NF100-250
NF400-600
NF800-1200
Insulation, Insulated Barsor Painted Sheetmetal (mm)
installation | safety distance requirements
OperatingVoltageModel
25
50
75
80
A40
50
50
55
100
100
B140
50
50
55
100
100
B2
Bare/UnpaintedSheetmetal (mm)
25
30
80
90
A
45
55
100
100
B1
45
55
100
100
B2U<440V
U<600V
U<440V
U<600V
U<440V
U<600V
U<440V
U<600V
Please note that the breaker selection shown in the tables are subjected to the following: only 1 motor to beinstalled in the circuit and the starting current is less than 6 times of motor full load current.
s e l e c t i o n t a b l e
54
NF800
NF50
NF100
NF250
NF400
NF600
NF1200
NF50
NF100
NF250
NF400
NF600
NF800
NF1200
tightening range* Nm Bolt/Screw
To ensure the correct operation of the MCCB, it is essential to make a proper
cable or busbar termination to the MCCB. It is recommended that the
supplied screws be used to connect the cables or busbars to the breaker
terminals and tightened to the torque, as shown in the table below.
terminal-tightening torque
Cable size mm2 ScrewModel
terminals for cable lugs connection
M5 screw Pan head
M8 screw Screw
1.8 ~ 2.0 N/A
2.5 ~ 3.5 N/A
1.6 ø
Min Max I II Size Type
22
1.6 ø 50
M8 screw Screw
M12 bolt x 2 Bolts
2.5 ~ 3.5 N/A
N/A 10 ~ 14
38 150
150 2 x 100
M12 bolt x 2 Bolts
N/A N/A
N/A 10 ~ 14
N/A N/A
2 x 150 2 x 200
N/A N/A
N/A N/AN/A N/AN/A N/A
tightening range* kgf-cm Bolt/ScrewCopper busbar size mm2
Model
terminals for copper busbar connection
M5 screw
M8 screw
1.8 ~ 2.0 N/A
2.5 ~ 3.5 N/A
5
Max t = Max w = I II Size
12.5
5 16.5
M8 screw
M12 bolt x 2
2.5 ~ 3.5 N/A
N/A 10 ~ 14
7 23
8 25
M12 bolt x 2
M12 bolt x 2
N/A 10 ~ 14
N/A 10 ~ 14
8 40
10 44
M12 bolt x 2N/A 10 ~ 1417 44
* NoteCopper busbar
Caution1) Do not over tighten. If the tightening torque is
exceeded, bolts/screws and copper bars may be damaged.
2) Failure to secure a terminal connection maycause an electrical fault. Make sure allterminal connections are tightly secured.
55
terminal-cable & copper busbar sizes
c o n n e c t i o n d a t a
ISO Square(mm2)
CNS StandardSquare (mm2)
UL StandardAWG or kcmil at 75˚C
MCCBRated Current
In (A)
8 ≥ In > 0 1 1.2 ø 14 AWG
14 AWG
14 AWG
12 AWG
10 AWG
10 AWG
8 AWG
6 AWG
4 AWG
3 AWG
2 AWG
1 AWG
1/0 AWG
2/0 AWG
3/0 AWG
4/0 AWG
250 MCM
300 MCM
350 MCM
500 MCM
2 x 3/0 AWG
2 x 250 MCM
2 x 350 MCM
3 x 300 MCM
2 x 250 MCM
2 x 350 MCM
3 x 300 MCM
1.6 ø
1.6 ø
2.0 ø
5.5
8
14
14
22
38
50
50
60
80
100
125
125
150
200
250
2 x 100
1.5
2.5
2.5
4
6
10
16
25
35
35
50
50
70
95
95
120
150
185
185
240
2 x 150
2 x 185
2 x 240
2 x (30 x 5)
2 x (40 x 5)
2 x (50 x 5)
2 x 150
2 x 200
2 x 250
2 x (30 x 5)
2 x (40 x 5)
2 x (50 x 5)
12 ≥ In > 8
15 ≥ In > 12
20 ≥ In > 15
25 ≥ In > 20
32 ≥ In > 25
50 ≥ In > 32
65 ≥ In > 50
85 ≥ In > 65
100 ≥ In > 85
115 ≥ In > 100
130 ≥ In > 115
150 ≥ In > 130
175 ≥ In > 150
200 ≥ In > 175
225 ≥ In > 200
250 ≥ In > 225
275 ≥ In > 250
300 ≥ In > 275
350 ≥ In > 300
400 ≥ In > 350
500 ≥ In > 400
630 ≥ In > 500
800 ≥ In > 630
500 ≥ In > 400
630 ≥ In > 500
800 ≥ In > 630
M C B
56
BHQ series | fixed type100100100
BHQ-1 BHQ-2 BHQ-3
1
240 / 415 240 / 415 240 / 415
10 15 20 30 40
50 60 75 80 100
10 15 20 30 40
50 60 75 80 100
10 15 20 30 40
50 60 75 80 100
2 3
Ampere Frame (AF)
Model Code
Number of Pole (P)
Rated Voltage: Ue Vac
Rated Current: In (A)at Ambient Temperature: 50˚ C
6 / 6 6 / 6 6 / 6
25
95
50
95
75
95
58.5 58.5 58.5
77.5 77.5 77.5
100 100 100
0 25 50
0.15 0.31 0.46
Rated Ultimate Short CircuitBreaking Capacity: I cu (kA)
240V/415V
a
b
c
ca
bb
aa
kgWeight
IEC 60947-2
57
BHP series | plug-in type100100100
BHP-1 BHP-2 BHP-3
1
240 / 415 240 / 415 240 / 415
6 / 6 6 / 6 6 / 6
25
74
50
74
75
74
60.5 60.5 60.5
77.5 77.5 77.5
– – –
0 25 50
0.13 0.26 0.39
10 15 20 30 40
50 60 75 80 100
10 15 20 30 40
50 60 75 80 100
10 15 20 30 40
50 60 75 80 100
2 3
Ampere Frame (AF)
Model Code
Number of Pole (P)
Rated Voltage: Ue Vac
Rated Current: In (A)at Ambient Temperature: 50˚ C
Rated Ultimate Short CircuitBreaking Capacity: I cu (kA)
240V/415V
a
b
c
ca
bb
aa
kgWeight
IEC 60947-2
aaa
b
cac
M C B c h a r a c t e r i s t i c s & d i m e n s i o n s
58
BHQ & BHP series | operating characteristics
BHQ & BHP series | temperature characteristics
59
BHQ series | fixed type front connection
BHP series | plug-in type front connection
1-pole 2-pole 3-pole
1-pole 2-pole 3-pole
60
N O T E S
what is quality ?
We define quality as products having the highest
level of reliability, performance and design. Our
aim for quality is to meet the requirements of
other global markets and to exceed the current
international standards. With our in-house design
and development team, our range of products are
currently manufactured in accordance and
compliance to various international standards.
our road to quality
ManufacturerHwa Shih Electric Industrial Co Ltd14, 16 Lane 2, Pa Teh Road,Yinko District, New Taipei City, Taiwan R.O.C.Tel : +886 2 2678 3675Fax : +886 2 2678 0564Email : [email protected]