Memshield 2 P1-46 - Voltimum - The Leading Electrical ... 6 5 Memshield 2 P1-46 31/7/02 15:44 Page 7 3 E CIRCUIT BREAKERS - 16 TO 1600A FRAME SIZE CURRENT RATINGS TYPE G-Frame 16 -

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M E M S H I E L D 2 M O U L D E D C A S E C

SPECIFICATION

■ One of the widest ranges in the world today

■ Built on the proven capability of Memshield 2

■ Full compliance with international standard

IEC 60947-2

■ MCCBs designed & manufactured in the U.K.

■ Extensive choice from 16-1600A

■ DIN - rail mounting

■ Compact dimensions

■ User fitted, front fitting accessories

■ Massive selection of accessories to adapt to

any application

■ Designed for use all around the world

The Memshield 2 system encompasses both category

A thermal/magnetic and category B electronic type

MCCBs. Thermal magnetic type devices are

available in standard, hi-break and adjustable forms.

To complement the MCCBs a wide range of internal

auxiliaries and external accessories is available.

Accessories include rotary handles, terminal shields,

plug in bases, spreader links, padlock attachments,

motor drives etc. Auxiliaries include shunt trips,

undervoltage releases, auxiliary and alarm contacts.

All Memshield 2 MCCBs are highly specified.

Positive contact indication is standard, with three

positions ‘ON’ ‘OFF’ and a centre ‘TRIPPED’ being

provided. The trip free mechanism prevents the

MCCB contacts from being held closed in the event

of overcurrent.

All Memshield 3 & 4 pole units have a trip to test

button provided as standard. All main contacts are of

quality silver alloy construction for durability.

Compliance with IEC 60947-2 is covered by type

test and marine approval certification.

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NEW G FRAME MCCBS....

Nine ratings from 16 to 125A

Available in SP, DP, TP, & FP (TPSN)

pole configuration

Simple & easy user fitted, front fitting,

internal accessories

Optional adjustable thermal trip characteristics

All 3 & 4 pole units have a ‘trip to test’ button

as standard

All Memshield 2 MCCBs have trip free mechanisms

Mouldings manufactured from high performance

engineering polymers

Rotary drives either direct or via operating shaft

Positive contact indication via the operating handle

Moulded operating handles lockable in the

‘OFF’ position

Standard 35mm DIN-rail mounting facility

Comprehensive accessories include rear connectors12

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Memshield 2 P1-46 31/7/02 15:44 Page 7

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E C I RC U I T B R E A K E R S - 1 6 T O 1 6 0 0 A

FRAME SIZE CURRENT RATINGS TYPE

G-Frame 16 - 125A Thermal/Magnetic

F-Frame 16 - 200A Thermal/Magnetic

J-Frame 160 - 250A Thermal/Magnetic

K-Frame 250 - 400A Thermal/Magnetic

L-Frame 400 - 800A Thermal/Magnetic

L-Frame 630 - 800A Electronic

M-Frame 1000 - 1250A Electronic

N-Frame 1600A Electronic

USER FITTED, FRONT FITTING ACCESSORIES

SHUNT TRIPInstalled inside the MCCB, a coil whenenergised ‘trips’ the MCCB. To operate theshunt trip a remote supply is required. Shunttrips can be used in conjunction with anormally open pushbutton to trip the MCCB.

UNDERVOLTAGE RELEASE(Sometimes called a no-volt release)Installed inside the MCCB, a coil when de-energised will ‘trip’ the MCCB. The UVRwill operate below a voltage thresholddependant on the particular device andvoltage type selected. UVRs are useful wherecircuit disconnection is required on loss ofsupply. The MCCB will be tripped and mustbe reset via a motor drive or manually.

AUXILIARY CONTACTInstalled inside the MCCB, to allow remoteindication of the position of the MCCBcontacts. The auxiliary contact will notdifferentiate between an MCCB that is ‘off’and one that has ‘tripped’. The auxiliarycontact can be used in conjunction with aremote supply and either signal lamps, bellsor buzzers.

ALARM CONTACTSInstalled inside the MCCB to indicate whenthe MCCB has ‘tripped’. Its closing contactswill only operate when the MCCB has been‘tripped’ (either due to overcurrent or as aresult of a shunt trip or UVR beingactivated) rather than switched ‘off’.

EXTENSIVE RANGE OF EXTERNAL ACCESSORIES

INTERPOLE BARRIERSInstalled between MCCB terminals whereingress of damp or dirt may lead toinsulation breakdown or creepage betweenpoles. The interpole barrier increases thedistance between poles to reduce thepossibility of creepage. Supplied in pairs(per pole) unless otherwise specified.

TERMINAL SHIELDSInstalled either on the load or line side MCCBterminals. The primary function is to reducethe possibility of direct contact by shroudingthe terminals. In addition each pole of theterminal shield has an interpole barrier, so thatit provides this function as well.

PADLOCK ATTACHMENTCan be used in conjunction with a padlock toprevent unauthorised operation of theMCCB. Can be used to padlock the MCCB‘off’ or ‘on’. Note when padlocked in the ‘on’position if the MCCB ‘trips’ due for exampleto overcurrent the MCCB still operates. Thisis because all Memshield MCCBs have tripfree mechanisms.

ROTARY DRIVEAllows the MCCB to be switched ‘on’ and‘off’ manually using less energy. The mainadvantage is that it allows panel mountingwith the use of door interlocked extensionshafts. The door interlock allows the door tobe opened only when the MCCB is ‘off’.

PLUG-IN BASEAllows the MCCB to be very highlyshrouded. It consists of a base to which allcable connections are made and connectingpins fitted onto the MCCB terminals tolocate within the base. Useful forapplications where speedy replacement orremoval of devices is required. An automatictrip feature is incorporated to ensure thebreaker is tripped if an attempt is made toremove it whilst in the ‘ON’ position.

AUXILIARY CONNECTION BLOCK Intended to fit onto plug-in bases. It connectsMCCB auxiliaries, and in the event of MCCBremoval allows the auxiliaries to be quicklydisconnected from their control circuits.

SPREADER LINKSSpreader links or terminal extension linksallow the MCCB cable capacities to beincreased, each terminal has a spreader link fitted.

MOTOR OPERATORSSolenoid Drive (F, J & K-Frame MCCBs)Allows the MCCB to be switched ‘on’ or ‘off’by a remote supply or control circuit.

MOTOR MECHANISM (L, M & N-Frame MCCBs) Provides thesame function as the solenoid drive, but usesa motor driven spring charging mechanismto drive the MCCB ‘on’.

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Memshield 2 P1-46 31/7/02 15:46 Page 8

■ Memshield 2 G frame MCCBs available in three ranges:

Standard, Hi-break, Hi-break Adjustable

■ User fitted, front fitting accessories

■ DIN - rail mounting

■ Memshield 2 MCCB performance is assured through extensive design

& development in our own ASTA accredited test station

■ Current limiting action of Memshield 2 MCCBs provides low values of

let-through energy

■ Full information and time/current characteristics curves are available

M E M S H I E L D 2 M C C B D I S T R I B U T I O N S Y S T E MM O U L D E D C A S E C I R C U I T B R E A K E R S C O M P A C T 1 6 T O 1 2 5 A , G - F R A M E

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MCCB DESCRIPTION STANDARD RANGE HI-BREAK FIXED HI-BREAK ADJUSTABLEPOLES 1 POLE 2 POLE 3 POLE 1 POLE 3 POLE 3 POLE 4 POLE (TPSN)

Utilisation category A A A A A A A

Impulse withstand voltage 8kV 8kV 8kV 8kV 8kV 8kV 8kV

Adjustment

Thermal Fixed Fixed Fixed Fixed Fixed Adjustable Adjustable

Magnetic Fixed Fixed Fixed Fixed Fixed Fixed Fixed

BREAKING CAPACITY IEC60947-2/BSEN60947-2 (AC 50/60HZ)

380/415V AC Icu (kA) 16 16 25 25 25

Ics (kA) 8 13 13 13 13

220/240V AC Icu (kA) 16 25 25 22 35 35 35

Ics (kA) 8 13 13 11 18 18 18

250V DC Icu (kA) 15 15 25 25 25

Ics (kA) 8 8 13 13 13

CURRENT RATING (A) CURRENTFIXED TYPE LIST NO. LIST NO. LIST NO. LIST NO. LIST NO. RATING (A) LIST NO. LIST NO.

ADJ. TYPE

16A MGL161 MGL162 MGL163 MGH161 MGH163

20A MGL201 MGL202 MGL203 MGH201 MGH203 18-25A MGHAT253 MGHAT254







125A MGL1251 MGL1252 MGL1253 MGH1253 85-125A MGHAT1253 MGHAT1254

Terminal Capacities (max) 70mm2 70mm2 70mm2 70mm2 70mm2 70mm2 70mm2

Dimensions (mm)

A 25 50 75 25 75 75 100

B 138 138 138 138 138 138 138

C 71 71 71 71 71 71 71

D 87 87 87 87 87 87 87

Weight (kg) approx. 0.35 0.6 0.9 0.35 0.9 0.9 1.20

All G-Frame MCCBs can be supplied with 50ºC ambient calibration. To order, insert

‘X’ at the end of the list number eg. MGL1253X or MGHAT1253X.

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Memshield 2 P1-46 31/7/02 15:46 Page 9

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1 6 T O 1 2 5 A G - F R A M E A U X I L I A R I E S A N D A C C E S S O R I E S

ACCESSORY/AUXILIARYDESCRIPTIONPOLES 1 POLE 2 POLE 3 POLE 4 POLE

LIST NO. LIST NO. LIST NO. LIST NO.

ACCESSORIES

Terminal Shields (each) MGTS1 MGTS2 MGTS3 MGTS4

Rotary Drive (Direct) - - MGRD MGRD

Rotary Drive (Extension Shaft)* - - MGRDVL MGRDVL

Padlock Attachment (6 off) 1MGLL 1MGLL 1MGLL 1MGLL

Padlock PD2 PD2 PD2 PD2

Interpole Barriers (one end set) - MGIB2 MGIB3 MGIB4

Rear Connection (1 pole set long) RCSGL RCSGL RCSGL RCSGL

Rear Connection (1 pole set short) RCSGS RCSGS RCSGS RCSGS

Spreader links - - MGSLF3 MGSLF4

Individual metal enclosure 125MGEND 125MGEND 125MGEND 125MGEND

USER FITTED, FRONT FITTING SHUNT TRIPS **

12V AC/DC coil voltage - - MGSTR12 MGSTR12



110 - 130V AC/DC coil voltage - - MGSTR110 MGSTR110

220 - 250V AC/DC coil voltage - - MGSTR220 MGSTR220

380 - 440V AC 50Hz coil voltage✝ - - MGSTR380 MGSTR380

USER FITTED, FRONT FITTING UNDERVOLTAGE RELEASE **

12V AC 50Hz coil voltage - - MGUVR12 MGUVR12



110 - 130V AC 50Hz coil voltage - - MGUVR110 MGUVR110



12V DC coil voltage - - MGUVR12D MGUVR12D



110 - 130V DC coil voltage - - MGUVR110D MGUVR110D

220 - 250V DC coil voltage - - MGUVR220D MGUVR220D

USER FITTED, FRONT FITTING AUXILIARIES **

1 Gang Changeover Contacts✝✝ - - MGA1 MGA1

NOTE: Dimensions see page 70-85

*Shaft for enclosure depth (min-max, mm) 140-280.

** Shunt trip & up to two auxiliary devices or UVR & up to two auxiliary

devices can be fitted.

✝ Includes self-interruption circuit via an integral microswitch.✝✝ Suitable for use as alarm switch or auxiliary switch - two switches may be fitted

per MCCB.

Memshield 2 P1-46 31/7/02 15:46 Page 10

■ Memshield 2 F frame MCCBs available in three ranges:

Standard, Standard Adjustable, Hi-break Adjustable




let-through energy


M E M S H I E L D 2 M C C B D I S T R I B U T I O N S Y S T E MM O U L D E D C A S E C I R C U I T B R E A K E R S 1 6 T O 2 0 0 A , F - F R A M E

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MCCB DESCRIPTION STANDARD RANGE STANDARD ADJUSTABLE HI-BREAK RANGEPOLES 1 POLE 3 POLE 3 POLE 4 POLE 3 POLE 3 POLE 4 POLE (TPSN)Utilisation category A A A A A A A

Impulse withstand voltage 8kV 8kV 8kV 8kV 8kV 8kV 8kV

Adjustment

Thermal Fixed Fixed 0.8-1.0In 0.8-1.0In Fixed 0.8-1.0In 0.8-1.0In

Magnetic Fixed Fixed 6.0-12.0In 6.0-12.0In Fixed 6.0-12.0In 6.0-12.0In

BREAKING CAPACITY IEC60947-2/BSEN60947-2 (AC 50/60 HZ)690V AC Icu (kA) 12 12 12 12 14 14

Ics (kA) 12 6 6 6 7 7

480V AC Icu (kA) 20 25 25 25 45 45

Ics (kA) 20 13 13 13 22 22

400V AC/ Icu (kA) 25 25 25 45 65 65

440V AC Ics (kA) 25* 13 13 25* 33 33

380V AC Icu (kA) 30 30 30 50 70 70

Ics (kA) 30 15 15 25 35 35

220V AC/ Icu (kA) 25 40 40 40 60 80 80

240V AC Ics (kA) 19 40 20 20 30 40 40

250V DC Icu (kA) 37 37 37 37 37 37

Ics (kA) 19 19 19 19 19 19

CURRENT RATING (A) LIST NO. LIST NO. LIST NO. LIST NO. LIST NO. LIST NO. LIST NO.16A MFL161 MFL163 - - MFH163 - -20A MFL201 MFL203 - - MFH203 - -32A MFL321 MFL323 - - MFH323 - -40A MFL401 MFL403 - - MFH403 - -50A MFL501 MFL503 MFLA503 MFLA504 MFH503 MFHA503 MFHA50463A MFL631 MFL633 MFLA633 MFLA634 MFH633 MFHA633 MFHA63480A MFL801 MFL803 MFLA803 MFLA804 MFH803 MFHA803 MFHA804100A MFL1001 MFL1003 MFLA1003 MFLA1004 MFH1003 MFHA1003 MFHA1004125A MFL1251 MFL1253 MFLA1253 MFLA1254 MFH1253 MFHA1253 MFHA1254160A MFL1601 MFL1603 MFLA1603 MFLA1604 MFH1603 MFHA1603 MFHA1604200A - MFL2003 - - MFH2003 - -Terminal Capacities (Max) 120mm2 120mm2 120mm2 120mm2 120mm2 120mm2 120mm2

Dimensions (mm)

A 35 105 105 140 105 105 140

B 168 168 168 168 168 168 168

C 86 86 86 86 86 86 86

D 106 106 106 106 106 106 106

Weight (kg) app. 0.8 2.1 2.1 2.6 2.1 2.1 2.6

*19kA on 16A and 20A.

NOTE: Fixed trip F-Frame MCCBs can be supplied with 50ºC ambient calibration.

To order, insert ‘X’ before the first digit of the list number eg. MFLX1253.

Memshield 2 P1-46 31/7/02 15:46 Page 11

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1 6 T O 2 0 0 A F - F R A M E A U X I L I A R I E S A N D A C C E S S O R I E S

ACCESSORY/AUXILIARY DESCRIPTION1 POLE 3 POLE 4 POLE

POLES LIST NO. LIST NO. LIST NO.ACCESSORIESTerminal Shields (each) MFTS1 MFTS3 MFTS4Rotary Drive (Direct) - MFRD MFRDRotary Drive (Extension Shaft)* - MFRDVL MFRDVLRed/Yellow Safety Handles for Rotary Drive - MRYH1 MRYH1Twisted Shaft for Rotary Drive ● - MRDTSL MRDTSLRotary Drive Locking Kit - MLD1 MLD1Figure Lock Device (For MFRDVL) ▲ - FLD1 FLD1Padlock Attachment 2MFLL 2MFLL 2MFLLPadlock PD50 PD50 PD50Interpole Barriers - MFIB3 MFIB4Short Rear Connectors (Pole) - RCSFS RCSFSLong Rear Connectors (Pole) - RCSFL RCSFLPlug-in Base (Front Connection) ■ - MFPIBF3 MFPIBF4Plug-in Base (Rear Connection) ■ - MFPIBR3 MFPIBR4Plug-in Base Sockets (Per Pole) - MFPS1 MFPS15 Way Side Access Auxiliary Connection Block - MFACS5 MFACS58 Way Front Access Auxiliary Connection Block - MFACF8 MFACF88 Way Rear Access Auxiliary Connection Block - MFACR8 MFACR8Pull Out Handle (Pair) - MFPH MFPHRotary Drive Plug-in Base Fixing Screw - MFFS MFFSSpreader Links (Flat) - MFSLF3 MFSLF4Spreader Links (Offset) - MFSLO3 -Solenoid Drive (110V AC/DC) - MFMD110 MFMD110Solenoid Drive (230V AC/DC) - MFMD230 MFMD230Individual metal enclosure - 160MEN 160MENSHUNT TRIPS **9 - 12V AC 50Hz coil voltage✝ - MFSTR9 MFSTR924V AC 50Hz coil voltage✝ - MFSTR24 MFSTR2448 - 60V AC 50Hz coil voltage✝ - MFSTR48 MFSTR48100 - 130V AC 50Hz coil voltage✝ - MFSTR100 MFSTR100200 - 350V AC 50Hz coil voltage✝ - MFSTR200 MFSTR200380 - 500V AC 50Hz coil voltage✝ - MFSTR380 MFSTR38012V DC coil voltage✝ - MFSTR12D MFSTR12D24V DC coil voltage✝ - MFSTR24D MFSTR24D48 - 60V DC coil voltage - MFSTR48D MFSTR48D100V DC coil voltage - MFSTR100D MFSTR100D200 - 250V DC coil voltage - MFSTR200D MFSTR200DUNDERVOLTAGE RELEASE **12V AC 50Hz coil voltage - MFUVR12 MFUVR1224V AC 50Hz coil voltage - MFUVR24 MFUVR2448 - 60V AC 50Hz coil voltage - MFUVR48 MFUVR48100 - 127V AC 50Hz coil voltage - MFUVR100 MFUVR100208 - 240V AC 50Hz coil voltage - MFUVR208 MFUVR208380 - 415V AC 50Hz coil voltage - MFUVR380 MFUVR38012V DC coil voltage - MFUVR12D MFUVR12D24V DC coil voltage - MFUVR24D MFUVR24D48V DC coil voltage - MFUVR48D MFUVR48D100V DC coil voltage - MFUVR100D MFUVR100D200 - 250V DC coil voltage - MFUVR200D MFUVR200DOTHER AUXILIARIES **1 Gang Changeover Contacts - MFA1L MFA1L2 Gang Changeover Contacts - MFA2L MFA2LAlarm Contact - MFBA1L MFBA1LCombined Changeover/Alarm Switch - MFABA1L MFABA1L

NOTE: Dimensions see page 70-85. For Mechanical Interlock Information see page 18.*Shaft for enclosure depth (min-max, mm) 170-486. ▲ Figure Lock not included (When fitting figure lock minimum enclosure depth increases by 45mm).** Shunt trip & up to two auxiliary devices or UVR & up to two auxiliary devices can be fitted.■ Automatic trip feature only available on adjustable trip MCCBs.✝ Includes self-interruption circuit via an integral microswitch. ● Alters handle position from to

Memshield 2 P1-46 31/7/02 15:47 Page 12

■ Memshield 2 J frame MCCBs available in two ranges:

Standard Adjustable, Hi-break Adjustable




let-through energy


M E M S H I E L D 2 M C C B D I S T R I B U T I O N S Y S T E MM O U L D E D C A S E C I R C U I T B R E A K E R S 1 6 0 T O 2 5 0 A , J - F R A M E

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MCCB DESCRIPTION STANDARD ADJUSTABLE HI-BREAK ADJUSTABLEPOLES 3 POLE 4 POLE 3 POLE 4 POLE

(TPSN) (TPSN)Utilisation category A A A A

Impulse withstand voltage 8kV 8kV 8kV 8kV

Adjustment

Thermal 0.8-1.0In 0.8-1.0In 0.8-1.0In 0.8-1.0In

Magnetic 6.0-12.0In 6.0-12.0In 6.0-12.0In 6.0-12.0In

BREAKING CAPACITY IEC60947-2/BSEN60947-2 (AC50/60HZ)

690V AC Icu (kA) 14 14 18 18

Ics (kA) 7 7 9 9

480V AC Icu (kA) 20 20 45 45

Ics (kA) 10 10 22 22

400V AC/ Icu (kA) 36 36 65 65

440V AC Ics (kA) 18 18 33 33

380V AC Icu (kA) 45 45 70 70

Ics (kA) 23 23 35 35

220V AC/ Icu (kA) 65 65 80 80

240V AC Ics (kA) 33 33 40 40

250V DC Icu (kA) 37 37 37 37

Ics (kA) 19 19 19 19

CURRENT RATING (A) LIST NO. LIST NO. LIST NO. LIST NO.

160A MJLA1603 MJLA1604 MJHA1603 MJHA1604



Terminal Capacities 150mm2 150mm2 150mm2 150mm2

Dimensions (mm)

A 105 140 105 140

B 254 254 254 254

C 104 104 104 104

D 126 126 126 126

Weight (kg) approx. 4.0 5.2 4.0 5.2

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ACCESSORY/AUXILIARY DESCRIPTION

3 POLE 4 POLEPOLES LIST NO. LIST NO. ACCESSORIESTerminal Shields (each) MJTS3 MJTS4Rotary Drive (Direct) MJRD MJRDRotary Drive (Extension Shaft)* MJRDVL MJRDVLRed/Yellow Safety Handles for Rotary Drive MRYH1 MRYH1Twisted Shaft for Rotary Drive ● MRDTSL MRDTSLRotary Drive Locking Kit MLD1 MLD1Figure Lock Device (For MJRDVL) ▲ FLD1 FLD1Padlock Attachment 3MJLL 3MJLLPadlock PD50 PD50Interpole Barriers MJIB3 MJIB4Short Rear Connectors (Pole) RCSJS RCSJSLong Rear Connectors (Pole) RCSJL RCSJLPlug-in Base (Front Connection) MJPIBF3 MJPIBF4Plug-in Base (Rear Connection) MJPIBR3 MJPIBR4Plug-in Base Sockets (Per Pole) MJPS1 MJPS18 Way Front Access Auxiliary Connection Block MJACF8 MJACF88 Way Rear Access Auxiliary Connection Block MJACR8 MJACR816 Way Front Access Auxiliary Connection Block MJACF16 MJACF1616 Way Rear Access Auxiliary Connection Block MJACR16 MJACR16Pull Out Handle (Pair) MFPH MFPHRotary Drive Plug-in Base Fixing Screw MJFS MJFSSpreader Links (Flat) MJSLF3 MJSLF4Spreader Links (Offset) MJSLO3 -Solenoid Drive (110V AC/DC) MJMD110 MJMD110Solenoid Drive (230V AC/DC) MJMD230 MJMD230SHUNT TRIPS **9 - 12V AC 50Hz coil voltage✝ MJSTR9 MJSTR924V AC 50Hz coil voltage✝ MJSTR24 MJSTR2448 - 60V AC 50Hz coil voltage✝ MJSTR48 MJSTR48110 - 127V AC 50Hz coil voltage✝ MJSTR110 MJSTR110208 - 240V AC 50Hz coil voltage✝ MJSTR208 MJSTR208380 - 480V AC 50Hz coil voltage✝ MJSTR380 MJSTR38012V DC coil voltage✝ MJSTR12D MJSTR12D24V DC coil voltage✝ MJSTR24D MJSTR24D48 - 60V DC coil voltage MJSTR48D MJSTR48D110 - 127V DC coil voltage MJSTR110D MJSTR110D220 - 250V DC coil voltage MJSTR220D MJSTR220DUNDERVOLTAGE RELEASE **12V AC 50Hz coil voltage MJUVR12 MJUVR1224V AC 50Hz coil voltage MJUVR24 MJUVR2448 - 60V AC 50Hz coil voltage MJUVR48 MJUVR48110 - 127V AC 50Hz coil voltage MJUVR110 MJUVR110208 - 240V AC 50Hz coil voltage MJUVR208 MJUVR208380 - 480V AC 50Hz coil voltage MJUVR380 MJUVR380550 - 600V AC 50Hz coil voltage MJUVR550 MJUVR55012V DC coil voltage MJUVR12D MJUVR12D24V DC coil voltage MJUVR24D MJUVR24D48 - 60V DC coil voltage MJUVR48D MJUVR48D110 - 127V DC coil voltage MJUVR110D MJUVR110D220 - 250V DC coil voltage MJUVR220D MJUVR220DOTHER AUXILIARIES **1 Gang Changeover Contacts MJA1L MJA1L2 Gang Changeover Contacts MJA2L MJA2LAlarm Contact MJBA1L MJBA1LCombined Changeover/Alarm Switch MJABA1L MJABA1L

NOTE: Dimensions see page 70-85. For Mechanical Interlock Information see page 18.

*Shaft for enclosure depth (min-max, mm) 188-504. ▲ Figure Lock not included

(When fitting figure lock minimum enclosure depth increases by 45mm).

** Shunt trip & up to two auxiliary devices or UVR & up to two auxiliary devices can be fitted.

✝ Includes self-interruption circuit via an integral microswitch.

● Alters handle position from to

Memshield 2 P1-46 31/7/02 15:47 Page 14

■ Memshield 2 K frame MCCBs available in two ranges:

Standard Adjustable, Hi-break Adjustable




let-through energy


M E M S H I E L D 2 M C C B D I S T R I B U T I O N S Y S T E MM O U L D E D C A S E C I R C U I T B R E A K E R S 2 5 0 T O 4 0 0 A , K - F R A M E

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MCCB DESCRIPTION STANDARD ADJUSTABLE HI-BREAK ADJUSTABLE

POLES 3 POLE 4 POLE 3 POLE 4 POLE

Utilisation category A A A A

Impulse withstand voltage 8kV 8kV 8kV 8kV

Adjustment

Thermal 0.8-1.0In 0.8-1.0In 0.8-1.0In 0.8-1.0In

Magnetic 6.0-12.0In 6.0-12.0In 6.0-12.0In 6.0-12.0In

BREAKING CAPACITY IEC60947-2/BSEN60947-2 (AC 50/60 HZ)

690V AC Icu (kA) 20 20 25 25

Ics (kA) 10 10 13 13

480V AC Icu (kA) 20 20 45 45

Ics (kA) 10 10 22 22

400V AC/ Icu (kA) 36 36 65 65

440V AC Ics (kA) 18 18 33 33

380V AC Icu (kA) 45 45 70 70

Ics (kA) 23 23 35 35

220V AC/ Icu (kA) 65 65 80 80

240V AC Ics (kA) 33 33 40 40

250V DC Icu (kA) 37 37 37 37

Ics (kA) 19 19 19 19

CURRENT RATING (A) LIST NO. LIST NO. LIST NO. LIST NO.

250A MKLA2503 MKLA2504 MKHA2503 MKHA2504



Terminal Capacities 240mm2 240mm2 240mm2 240mm2

Dimensions (mm)

A 140 183 140 183

B 257 257 257 257

C 104 104 104 104

D 126 126 126 126

Weight (kg) approx. 5.4 6.8 5.4 6.8

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2 5 0 T O 4 0 0 A K - F R A M E A U X I L I A R I E S A N D A C C E S S O R I E S

ACCESSORY/AUXILIARY DESCRIPTION

3 POLE 4 POLEPOLES LIST NO. LIST NO.ACCESSORIESTerminal Shields (each) MKTS3 MKTS4Rotary Drive (Direct) MJRD MJRDRotary Drive (Extension Shaft)* MJRDVL MJRDVLRed/Yellow Safety Handles for Rotary Drive MRYH1 MRYH1Twisted Shaft for Rotary Drive ● MRDTSL MRDTSLRotary Drive Locking Kit MLD1 MLD1Figure Lock Device (For MJRDVL) ▲ FLD1 FLD1Padlock Attachment 3MJLL 3MJLLPadlock PD50 PD50Interpole Barriers MKIB3 MKIB4Short Rear Connectors (Pole) RCSKS RCSKSLong Rear Connectors (Pole) RCSKL RCSKLPlug-in Base (Front Connection) MKPIBF3 MKPIBF4Plug-in Base (Rear Connection) MKPIBR3 MKPIBR4Plug-in Base Sockets (Per Pole) MKPS1 MKPS18 Way Front Access Auxiliary Connection Block MJACF8 MJACF88 Way Rear Access Auxiliary Connection Block MJACR8 MJACR816 Way Front Access Auxiliary Connection Block MJACF16 MJACF1616 Way Rear Access Auxiliary Connection Block MJACR16 MJACR16Pull Out Handle (Pair) MKPH MKPHRotary Drive Plug-in Base Fixing Screw MKFS MKFSSpreader Links (Flat) MKSLF3 MKSLF4Spreader Links (Offset) MKSLO3 -Solenoid Drive (110V AC/DC) MKMD110 MKMD110Solenoid Drive (230V AC/DC) MKMD230 MKMD230SHUNT TRIPS **9 - 12V AC 50Hz coil voltage✝ MJSTR9 MJSTR924V AC 50Hz coil voltage✝ MJSTR24 MJSTR2448 - 60V AC 50Hz coil voltage✝ MJSTR48 MJSTR48110 - 127V AC 50Hz coil voltage✝ MJSTR110 MJSTR110208 - 240V AC 50Hz coil voltage✝ MJSTR208 MJSTR208380 - 480V AC 50Hz coil voltage✝ MJSTR380 MJSTR38012V DC coil voltage✝ MJSTR12D MJSTR12D24V DC coil voltage✝ MJSTR24D MJSTR24D48 -60V DC coil voltage MJSTR48D MJSTR48D110 - 127V DC coil voltage MJSTR110D MJSTR110D220 - 250V DC coil voltage MJSTR220D MJSTR220DUNDERVOLTAGE RELEASE **12V AC 50Hz coil voltage MJUVR12 MJUVR1224V AC 50Hz coil voltage MJUVR24 MJUVR2448 - 60V AC 50Hz coil voltage MJUVR48 MJUVR48110 - 127V AC 50Hz coil voltage MJUVR110 MJUVR110208 - 240V AC 50Hz coil voltage MJUVR208 MJUVR208380 - 480V AC 50Hz coil voltage MJUVR380 MJUVR380550 - 600V AC 50Hz coil voltage MJUVR550 MJUVR55012V DC coil voltage MJUVR12D MJUVR12D24V DC coil voltage MJUVR24D MJUVR24D48 - 60V DC coil voltage MJUVR48D MJUVR48D110 - 127V DC coil voltage MJUVR110D MJUVR110D220 - 250V DC coil voltage MJUVR220D MJUVR220DOTHER AUXILIARIES **1 Gang Changeover Contacts MJA1L MJA1L2 Gang Changeover Contacts MJA2L MJA2LAlarm Contact MJBA1L MJBA1LCombined Changeover/Alarm Switch MJABA1L MJABA1L

NOTE: Dimensions see page 70-85. For Mechanical Interlock Information see page 18.

*Shaft for enclosure depth (min-max, mm) 188-504. ▲ Figure Lock not included

(When fitting figure lock minimum enclosure depth increases by 45mm).

** Shunt trip & up to two auxiliary devices or UVR & up to two auxiliary devices can be fitted.

✝ Includes self-interruption circuit via an integral microswitch. ● Alters handle position

from to

Memshield 2 P1-46 31/7/02 15:49 Page 16

■ Memshield 2 L, M & N frame MCCBs available with:

Electronic Tripping Mechanism as standard, Thermal Magnetic

Operation for L frame

■ 4-pole L, M & N frame MCCBs have the neutral pole on right

■ The range of adjustment of the electronic tripping unit is detailed on

page 16

■ The ability via the electronic tripping unit to modify the characteristics

of these MCCBs is detailed on page 16

M E M S H I E L D 2 M C C B D I S T R I B U T I O N S Y S T E MM O U L D E D C A S E C I R C U I T B R E A K E R S 4 0 0 T O 1 6 0 0 A L , M & N - F R A M E

14

MCCB DESCRIPTION L-FRAME ADJUSTABLE L-FRAME ELECTRONIC M-FRAME ELECTRONIC N-FRAME ELECTRONICPOLE 3 POLES 4 POLE (TPSN) 3 POLE 4 POLE (TPSN) 3 POLE 4 POLE (TPSN) 3 POLE 4 POLE (TPSN)Utilisation category A A B B B B B B

Impulse withstand voltage 8kV 8kV 8kV 8kV 8kV 8kV 8kV 8kV

Adjustment

Thermal 0.63-1.0In 0.63-1.0In

Magnetic 5.0-10.0In 5.0-10.0In

Long time delay 0.5-1.0In 0.5-1.0In 0.5-1.0In 0.5-1.0In 0.5-1.0In 0.5-1.0In

Short time delay 1.26-10.0In 1.26-10.0In 1.26-10.0In 1.26-10.0In 1.26-10.0In 1.26-10.0In

Instantaneous 1.89-12.0In 1.89-12.0In 1.89-12.0In 1.89-12.0In 1.89-12.0In 1.89-12.0In

BREAKING CAPACITY IEC60947-2/BSEN60947-2 (AC 50/60 HZ)690V AC Icu (kA) 20 20 20 20 25 25 45 45

Ics (kA) 10 10 10 10 13 13 23 23

480V AC Icu (kA) 35 35 35 35 45 45 65 65

Ics (kA) 18 18 18 18 34 34 49 49

400V AC/ Icu (kA) 50† 50† 50 50 65 65 85 85

440V AC Ics (kA) 25 25 25 25 49 49 64 64

380V AC Icu (kA) 65 65 50 50 85 85 100 100

Ics (kA) 33 33 25 25 64 64 75 75

220V AC/ Icu (kA) 85 85 85 85 100 100 125 125

240V AC Ics (kA) 43 43 43 43 75 75 94 94

250V DC Icu (kA) 40 40

Ics (kA) 20 20

CURRENT RATING (A) LIST NO. LIST NO. LIST NO. LIST NO. LIST NO. LIST NO. LIST NO. LIST NO.

L-frame 400A MLLA4003 MLLA4004630A MLLA6303 MLLA6304 MLLS6303 MLLS6304800A MLLA8003 MLLA8004 MLLS8003 MLLS8004

M-frame 1000A MMLS10003 MMLS100041250A MMLS12503 MMLS12504

N-frame 1600A MNLS16003 MNLS16004Terminal Capacities (hole dia) 13mm 13mm 13mm 13mm 13mm 13mm 13mm 13mm

Front connected Flat Bar Standard Standard Standard Standard Standard Standard Standard Standard

Rear connected Flat Bar - - - - - - Optional* Optional*

Dimensions (mm)

A 210 280 210 280 210 280 210 280

B 273 273 273 273 370 370 370 370

C 103 103 103 103 120 120 140 140

D 145 145 145 145 171 171 191 191

Weight (kg) approx. 9.4 11.9 9.6 12.1 22.0 28.0 27.0 35.0

✝ 35kA, 630A L Frame, TP and FP also available: TP List No. MLBA6303, FP List No. MLBA6304.

* For rear connection add suffix ‘R’ to List No.

Memshield 2 P1-46 31/7/02 15:49 Page 17

15

4 0 0 T O 1 6 0 0 A L , M & N - F R A M E A U X I L I A R I E S A N D A C C E S S O R I E S

ACCESSORY/AUXILIARY L-FRAME M-FRAME N-FRAME

DESCRIPTION

POLES 3 POLE 4 POLE 3 POLE 4 POLE 3 POLE 4 POLE LIST NO. LIST NO. LIST NO. LIST NO. LIST NO. LIST NO.

ACCESSORIES

Terminal Shields (each) MLTS3 MLTS4 MMTS3 MMTS4 - -

Rotary Drive (Direct) MLRD MLRD MMRD MMRD MMRD MMRD

Rotary Drive (Extension Shaft)* MLRDVL MLRDVL MMRDVL MMRDVL MMRDVL MMRDVL

Red/Yellow Safety Handles

for Rotary DriveMRYH2 MRYH2 MRYH2 MRYH2 MRYH2 MRYH2

Twisted Shaft for Rotary Drive ● MRDTSL MRDTSL MRDTSL MRDTSL MRDTSL MRDTSL

Figure Lock Device

(For MLRDVL/MMRDVL) ▲FLD1 FLD3 FLD1 FLD3 FLD1 FLD3

Padlock Attachment 6MLLL 6MLLL 12MMLL 12MMLL 12MMLL 12MMLL

Padlock PD50 PD50 PD50 PD50 PD50 PD50

Interpole Barriers (Pole) MLIB3 MLIB4 MMIB3 MMIB4 MMIB3 MMIB4

Rear Connectors MLRCK3 MLRCK4 MMRCK3 MMRCK4 Factory fitted only

Extension Handle MXH1 MXH1 MXH1 MXH1 MXH1 MXH1

Motor Drive (110V AC Source) MLMD110 MLMD110 MMMD110 MMMD110 MMMD110 MMMD110

Motor Drive (240V AC Source) MLMD240 MLMD240 MMMD240 MMMD240 MMMD240 MMMD240

Motor Drive (24V DC Source) MLMD24D MLMD24D MMMD24D MMMD24D MMMD24D MMMD24D

Motor Drive (100V DC Source) MLMD100D MLMD100D MMMD100D MMMD100D MMMD100D MMMD100D

SHUNT TRIPS ** ■

100 - 115V AC 50Hz coil voltage✝ MLSTL100 MLSTL100 MMSTL100 MMSTL100 MMSTL100 MMSTL100

200 - 480V AC 50Hz coil voltage✝ MLSTL200 MLSTL200 MMSTL200 MMSTL200 MMSTL200 MMSTL200

24V DC coil voltage✝ MLSTL24D MLSTL24D MMSTL24D MMSTL24D MMSTL24D MMSTL24D

48V DC coil voltage✝ MLSTL48D MLSTL48D MMSTL48D MMSTL48D MMSTL48D MMSTL48D

100 - 115V DC coil voltage✝ MLSTL100D MLSTL100D MMSTL100D MMSTL100D MMSTL100D MMSTL100D

200 - 230V DC coil voltage✝ MLSTL200D MLSTL200D MMSTL200D MMSTL200D MMSTL200D MMSTL200D

UNDERVOLTAGE RELEASE ** ■

100 - 120V AC 50Hz coil voltage MLUVL100 MLUVL100 MMUVL100 MMUVL100 MMUVL100 MMUVL100



100 - 115V DC coil voltage MLUVL100D MLUVL100D MMUVL100D MMUVL100D MMUVL100D MMUVL100D

200 - 230V DC coil voltage MLUVL200D MLUVL200D MMUVL200D MMUVL200D MMUVL200D MMUVL200D

OTHER AUXILIARIES ** ■

1 Gang Changeover Contacts MLA1R MLA1R MMA1R3 MMA1R4 MMA1R3 MMA1R4



Alarm Contact MLBA1R MLBA1R MMBA1R3 MMBA1R4 MMBA1R3 MMBA1R4

Combined Changeover/Alarm Switch MLABA1R MLABA1R MMABA1R3 MMABA1R4 MMABA1R3 MMABA1R4

NOTE: Dimensions see page 70-85.

*Shaft for enclosure depth (Min-max, mm) L-Frame:- 160-474, M-Frame:- 185-500,

N-Frame:- 205-520. ▲ Figure Lock not included

(When fitting figure lock minimum enclosure depth increased by 45mm). ■ Must be factory

fitted or fitted by personnel who have attended an MEM approved installation course.

✝ Includes self-interruption circuit via an integral microswitch.

** Shunt trip & up to three auxiliary devices or UVR & up to three auxiliary devices can be fitted.

● Alters handle position from to

Memshield 2 P1-46 31/7/02 15:49 Page 18

ELECTRONIC TRIP

Over-current tripping characteristics

CT rated current (A) (ln) 630/800/1000/1250/1600.

Base current setting (A) (lo) (ln) x (0.63-0.9-1.0).

Long time delay pickup current (A) (l1) (lo) x (0.8-0.85-0.95-1.0). Non tripping

at (l1) setting x 105% and below.

Tripping at 125% and above.

Long time delay time setting (S) (T1) (5-10-15-20-30) at (l1) at 600%

current. Setting tolerence ±20% l1.

Short time delay pickup current (A) (l2) (l0) x (2-4-6-8-10) Setting

tolerance ± 15%.

Short time delay time setting (S) (T2) Opening time (0.1-0.15-0.2-0.25-0.3)

in the definite time delay. Total clearing

time +50ms and resettable time is - 20ms

for the time delay setting.

Instantaneous trip pickup current (A) (l3) Continuously adjustable from (l0) x

(3 to 12). Setting tolerance ± 20%.

*Pre-trip alarm pickup current (A) (lp) (l1) x (0.7-0.8-0.9-1.0) Setting

tolerance ± 10%.

*Pre-trip alarm time setting (S) (Tp) 40s fixed definite time delay. Setting

tolerance ± 10%.

*Earth fault trip pickup current (A) (lG) Continuously adjustable from (ln) x (0.1

to 0.4). Setting tolerance ± 15%.

*Earth fault trip setting (S) (TG) Opening time (0.1-0.2-0.3-0.4-0.8)

in the definite time delay. Total clearing

time is +50ms and resettable time

is -20ms for the time delay setting.

*Option

The bold values will be applied as standard rating unless otherwise specified when

ordering. All time/current curves are based on standard settings.

M E M S H I E L D 2 M C C B D I S T R I B U T I O N S Y S T E MM O U L D E D C A S E C I R C U I T B R E A K E R S E L E C T R O N I C T R I P P I N G C H A R A C T E R I S T I C S

16

ELECTRONIC TRIP UNITS

Electronic trip units are fitted to the M-frame

(1000A-1600A) and are available as an option on

the L-frame (630A-800A).

The trip unit in standard form incorporates an

adjustable long time-delay, short-time delay, and

instantaneous trips, enabling co-ordination with fuses

on the high voltage side and down stream breakers.

Additionally, either earth fault trip or pre-trip alarm

functions can be supplied factory fitted as an option.

(See above for details of the tripping characteristics and

adjustment range).

The graph on page 17 shows the time-current

characteristics for all the protective functions.

ELECTRONIC BREAKER

Memshield 2 P1-46 31/7/02 15:49 Page 19

17

LONG TIME-DELAY

Provides adjustment of the overload protection functions. Essential for

general industrial plants and generator protection.

SHORT TIME-DELAY PICKUP CURRENT AND TRIP TIME

This function can be set by a switch to give either a definite time delay

(switch off) or an l2t ramp (switch on) which allows better co-ordination

with thermal magnetic MCCBs or fuses.

With the switch set to OFF, if the short time-delay pickup current is

exceeded the breaker will be tripped at the end of the short time-

delay period as set. The time delay is independent of the size of the

overcurrent and is used to provide selectivity with other devices.

With the l2t switch set to ON, the inverse time delay characteristic is as

shown in the graph opposite.

INSTANTANEOUS TRIP

Instantaneous tripping of the breaker will occur if the current flowing

through the breaker exceeds the instantaneous setting.

EARTH FAULT TRIP (OPTIONAL)

If an earth fault current occurs which exceeds the setting of the earth

fault trip, the breaker will trip after the set time delay. The trip time

delay is independent of the magnitude of the earth fault and is employed

in order to provide selectivity with other downstream devices.

PRE-TRIP ALARM CONTACT (OPTIONAL)

Increasing use of electrical and electronic equipment in buildings

and factories can cause power demand at peak times to reach

overload levels. If such a situation continued, a breaker may trip

and cause major disruption of essential loads if no action was taken

to reduce the overcurrent. A pre-trip alarm will provide a signal via

a normally open contact if the overcurrent exceeds the pre-set level

and time settings. The output contact could be used to activate shunt

trips in downstream breakers to cut off non-essential supplies.

Memshield 2 P1-46 31/7/02 15:50 Page 20

SIDE MOUNTED INTERLOCK FOR F, J, & K FRAME

This provides interlocking of two adjacent 3 or 4 pole breakers of the same

frame size. The system provides interlocking through the sides of the breakers

and allows the use of rotary or solenoid drive units. Must be factory fitted to

breakers configured for this interlock system.

M E M S H I E L D 2 M C C B D I S T R I B U T I O N S Y S T E MM O U L D E D C A S E C I R C U I T B R E A K E R S - M E C H A N I C A L I N T E R L O C K S

18

Description List No.

F-Frame to F-Frame MSIFF

J-Frame to J-Frame MSIJJ

K-Frame to K-Frame MSIJJ

REAR MOUNTED WALKING BEAM INTERLOCK FOR L, M, & N-FRAME

This provides interlocking of two adjacent 3 or 4 pole breakers of the

same frame size. The walking beam interlock mounts on brackets fitted

to the rear of each breaker. Breakers must be mounted side by side with

their covers flush.

Suitable for combined use with rotary or motor drive units.

Must be factory fitted or fitted by personnel who have attended an

MEM approved installation course.

Right Hand MCCBFrame L M N

Poles 3 4 3 4 3 4

L 3 MWBI7 MWBI7 - - - -

4 MWBI8 MWBI8 - - - -

M 3 - - MWBI9 MWBI9 - -

4 - - MWBI10 MWBI10 - -

N 3 - - - - MWBI11 MWBI11

4 - - - - MWBI12 MWBI12

Left

Hand

MCCB

Memshield 2 P1-46 31/7/02 15:50 Page 21

19

FRONT MOUNTED SLIDING BAR TYPE INTERLOCK FOR F, J, K, L, M, & N-FRAME

For interlocking two adjacent 3 or 4 pole breakers. When the interlock

handle is moved from side to side, a sliding bar extends to alternately

block movement of the breaker handles. Breakers must be mounted side

by side with their covers flush. Locking in either position can be achieved

with Castell/Fortress deadbolt or padlock.

Not suitable for use when rotary or solenoid/motor drive units are

to be fitted.

Select List Number from matrix table below.

Right Hand MCCBFrame F J K L M N

Poles 3 4 3 4 3 4 3 4 3 4 3 4

F 3 MI1 MI2 MI1 MI2 MI1 - - - - - - -

4 MI1 MI2 MI1 MI2 MI1 - - - - - - -

J 3 MI3 MI4 MI3 MI4 MI3 MI5 - - - - - -

4 MI3 MI4 MI3 MI4 MI3 MI5 - - - - - -

K 3 MI3 MI5 MI3 MI5 MI4 MI6 - - - - - -

4 MI3 MI5 MI3 MI5 MI4 MI6 - - - - - -

L 3 - - - - - - MI7 MI7 - - - -

4 - - - - - - MI8 MI8 - - - -

M 3 - - - - - - - - MI9 MI9 - -

4 - - - - - - - - MI10 MI10 - -

N 3 - - - - - - - - - - MI9 MI9

4 - - - - - - - - - - MI10 MI10

Left

Hand

MCCB

Memshield 2 P1-46 31/7/02 15:50 Page 22

■ Memshield 2 circuit breaker switches are ideally suited to:

Semi-automatic (i.e. magnetic only), Non-automatic operation

where MCCB accessories and/or compatible size is required

■ Memshield 2 circuit breaker switches as magnetic only types

(class SWA) retain their magnetic trips and will open above their

magnetic takover current settings - see table

■ Non-automatic circuit breaker switches (class SWB) have a rated

short circuit making capacity and a rated short time current -

see table

M E M S H I E L D 2 M C C B D I S T R I B U T I O N S Y S T E MMOULDED CASE C IRCUIT BREAKERS 16 TO 1600A - C IRCUIT BREAKER SWITCHES

20

DESCRIPTION 3 POLE 4 POLE FRAME PERFORMANCE

TYPE

Magnetic Rated Rated short Rated short

takeover conditional circuit making time current

current (A)* short circuit capacity, Icm r.m.s., Icw

current Icc (kA) peak (kA) (kA) (1sec)

415Vac 415Vac 415Vac

CURRENT RATING (A) LIST NO. LIST NO.

125 MGN1253 - G-Frame 1000 16 - -

63 MFN633 - F-Frame 630 25 - -

80 MFN803 - F-Frame 800 25 - -

100 MFN1003 - F-Frame 1000 25 - -

125 MFN1253 - F-Frame 1250 25 - -

160 MFN1603 - F-Frame 1600 25 - -

200 MFN2003 - F-Frame 2000 25 - -

250 MJN2503 MJN2504 J-Frame 2500 35 - -

320 MKN3203 - K-Frame 3200 35 - -

400 MKN4003 MKN4004 K-Frame 4000 35 - -

630 MLN6303 MLN6304 L-Frame - - 15 9

800 MLN8003 MLN8004 L-Frame - - 15 9

1250 MMN12503 MMN12504 M-Frame - - 32 15

1600 MNN16003 MNN16004 N-Frame - - 45 20

NOTE: Circuit breaker switches should not be used in place of an MCCB. Where

protection is necessary, fuse or circuit breaker back-up protection should be included

in the system upstream of the circuit breaker switch. For other information, eg.

accessories, auxiliaries and dimensions, please refer to the page which lists the

particular frame size of MCCB.

*±20%

Memshield 2 P1-46 31/7/02 15:51 Page 23

21

2 0 m A T O 3 A E A R T H L E A K A G E R E L A Y S

The Memshield 2 earth leakage relay is suitable for use with

all Memshield 2 thermal magnetic MCCBs i.e. G, F, J, K &

L (thermal magnetic) frames. An integral earth fault

protection option can be provided for Memshield 2 MCCBs

with electronic tripping units i.e. L (excluding thermal

magnetic), M & N-Frames.

The Memshield 2 earth leakage relay should be used in

conjunction with a current transformer and an appropriate

MCCB shunt trip. For other applications please consult us.

Suitable for 220/240v 50/60Hz operation.

Dimensions see P85.

*The ▲t operating time (i.e. Limiting non-actuating time)

stated is the actual operating time of the relay. When used to

activate a shunt trip fitted to an MCCB, the combined

operating time of the MCCB and shunt trip must be added to

this value.

Typical operating time of a Memshield 2 MCCB fitted with a

shunt trip is 33 to 36ms.

N.B. For other time delay and sensitivity options please

consult us.

RELAY DESCRIPTION

Relay contacts rated at 125vA (240v)

Sensitivity (Fixed)

When used in conjunction with G, F, J and K-Frame MCCBs,Memshield earth leakage relays achieve conformity to theperformance requirements of BS4293 for time delayed RCDs.

OPERATING TIME ▲t=60MS* LIST NO.

30mA A1HSR60

100mA A1MSR60

300mA A1LSR60

500mA A1VSR60

1A A1WSR60

3A A1XSR60

OPERATING TIME ▲t=300MS* LIST NO.

100mA A1MSR300

300mA A1LSR300

500mA A1VSR300

1A A1WSR300

3A A1XSR300

CURRENT TRANSFORMERS LIST NO.

45mm Current Transformers ACT45



Weight (kg) approx.

All Relays 0.125

45mm Current Transformers 0.45



Memshield 2 P1-46 31/7/02 15:51 Page 24

M E M S H I E L D 2 M C C B D I S T R I B U T I O N S Y S T E MM C C B D I M E N S I O N S

78

MCCBS

FRAMEGFJK

L400/630L800A

MN

A

137.5167.4254257273273370370

1P25

34.4------

2P50-------

3P75

104.5104.5139.5210210210210

4P100

139.5139.5183280280280280

C

7185.7103103103103120140

TOP2524242440424531

DBTM2524242443

45.54366

(N)----

4446--

E

87105126126145145171191

F

253535

43.570707070

G

109143.6220220

----

FRAME

G

F

J

K

L400/630

L800A

M

N

H

-

190.4

-

-

-

-

-

-

I

127

145

220

220

243

243

338

338

3P

25

35

35

43.5

70

70

70

70

4P

50

70

70

87

70

70

70

70

K

13

25.7

31

31

41.5

41.5

34

34

L

45

50

70

70

92

92

98

98

1P

25

2P

50

3P

75

4P

100

N

-

-

-

-

40

40

45

45

P

M4x4

M4x2

M5x2

M5x2

M8x4

M8x4

M8x4

M8x4

Q

-

-

-

-

80

80

80

100

G - K FRAME

L - N FRAME

B

J M

36

36

44.5

64

64

81

81

Memshield 2 P47-91 31/7/02 16:16 Page 35

79

TERMINAL SHIELD

INTERPOLE BARRIER

FRAME A B

G 43 43F 142 75J 141 92K 140 92L 110 95M 110 95N 110 95

Number of barriers

per catalogue item:-

3 Pole = 2 Barriers

4 Pole = 3 Barriers

LIST NO. FRAME A B C

MGTS1 G (1p) 25 19 71MGTS3 G (3p) 75 19 71MFTS1 F (1p) 35 42 55.5MFTS3 F (3p) 104.5 58.5 55.5MFTS4 F (4p) 139.5 58.5 55.5MJTS3 J (3p) 104.5 60 48MJTS4 J (4p) 139.5 60 48MKTS3 K (3p) 140 60 48MKTS4 K (4p) 183.5 60 48MLTS3 L (3p) 215 130 99MLTS4 L (4p) 285 130 99MMTS3 M (3p) 215 130 99MMTS4 M (4p) 285 130 99

All dimensions in mm

LIST NO. A B C D E F BOLT SIZE

MGSLF3 25 - 25 - 12.7 6.7 M6

MFSLF3 91 - 29 - 54.5 45.5 M8

MFSLF4 42 126 29 - 54.5 45.5 M8

MFSLO3 70 - 29 40 54.5 45.5 M8

MJSLF3 84 - 29 - 72.5 60.5 M12

MJSLF4 49 147 29 - 72.5 60.5 M12

MJSLO3 70 - 29 52.5 75 60.5 M12

MKSLF3 120 - 29 - 75 60.5 M12

MKSLF4 56 168 29 - 75 60.5 M12

MKSLO3 87 - 30.5 59 85 60.5 M12

SPREADER LINKS

Memshield 2 P47-91 31/7/02 16:16 Page 36


80

NB:- L, M and N frame rotary drives are supplied with a kit to allow

the operating handle to protrude out of the enclosure cover.

FRAME A B C D E

F 167.5 105 153 18.5 M4

J 254 105 179.5 20 M5

K 257 140 189.5 20 M5

FRAME A B C

G 127.5 - -

F 147 - -

J/K 164 - -

L 219.3 67 4.5

M 248.3 79 19

N 268.3 79 19

FRAME A B C D

L 62 111.5 215 310

M 62 111.5 243 338

N 62 111.5 263 358

DIRECT MOUNTED ROTARY DRIVE

F, J & K FRAME SOLENOID DRIVES

L, M & N FRAME MOTOR DRIVES


Memshield 2 P47-91 31/7/02 16:16 Page 37

81

REAR CONNECTION SETS F, J & K FRAME MCCBS

PLUG-IN BASE

PLUG IN CONNECTION DETAILS OVERALLBASE DIMENSIONS

LIST NO. A B C D E F G H I J K L

MFPIBR3 143.5 70 - - 26.5 61.5 M6 20 177.5 105 - 40

MFPIBR4 143.5 70 35 105 26.5 61.5 M6 20 177.5 - 140 40

MJPIBR3 220 70 - - 26.5 61.5 M8 20 254 105 - 40

MJPIBR4 220 70 35 105 26.5 61.5 M8 20 254 - 140 40

MKPIBR3 225 87 - - 41 76 M10 25 257 130 - 40

MKPIBR4 225 87 43.5 130.5 41 76 M10 25 257 - 173.5 40

MFPIBF3 221.5 70 - - 20.5 241.5 M8 4 x 20 177.5 105 - 40

MFPIBF4 221.5 70 35 105 20.5 241.5 M8 4 x 20 177.5 - 140 40

MJPIBF3 298 70 - - 20.5 318 M8 4 x 20 254 105 - 40

MJPIBF4 298 70 35 105 20.5 318 M8 4 x 20 254 - 140 40

MKPIBF3 315 87 - - 12 343 M10 6 x 25 257 130 - 40

MKPIBF4 315 87 43.5 130.5 12 343 M10 6 x 25 257 - 173.5 40

FRAME A B C D E F DIA

F 143.6 145 70 35 M4 22

J 220 220 70 35 M5 22

K 225 220 87 43.5 M5 26

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82

PLUG-IN BASE MOUNTING

AUXILIARY CONNECTIONPLUG-IN APERTURE RAILBASE FIXING HOLE CENTRES BASE CLEARANCE APERTURES J/K1-8 J/K9-16 F1-8 MOUNTSLIST NO. A B C D E F G H I J K L M N

MFPIBR3MFPIBF3 60 55 - - 112 176 105 - - 70 - - 36 30

MFPIBR4MFPIBF4 60 - 45 90 112 176 - 140 70 70 - - 36 30

MJPIBR3MJPIBF3 120 55 - - 188 252 105 - - 70 36 70 - 30

MJPIBR4MJPIBF4 120 - 27.5 90 188 252 - 140 52.5 70 36 72 - 30

MKPIBR3MKPIBF3 120 80 - - 189 261 130 - - 70 36 72 - 30

MKPIBR4MKPIBF4 120 - 41 125 189 261 - 175 65 70 36 72 - 30

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83

M C C B D I M E N S I O N S

ROTARY DRIVES

ROTARY HANDLEPOSITION RELATIVE TO MCCB

FRAME A B

MGRD/MGRDVL 12.8 9.8

MFRD/MFRDVL 22.5 11.5

MJRD/MJRDVL 22.0 30.5

MLRD/MLRDVL 53.0 0

MMRD/MMRDVL 53.0 7.0

NOTE: Handle can be fixed in a series of 90˚ positions to that shown, to

suit orientation of MCCB.

ROTARY HANDLE DIMENSIONS

ROTARY DRIVE TYPE X Y Z

MGRD/MGRDVL 37 42.5 44.7

MFRD/MFRDVL/MJRD/MJRDVL 48 67 96.5

MLRD/MLRDVL/MMRD/MMRDVL 48 67 159.5

45°

30.0 dia. hole

2 Holes 4.5 dia.

56.

0

17.0

3.5

OPERATING HANDLE FIXING APERTURE

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84


PANEL MOUNTED OPERATING HANDLE AND ROTARY DRIVE

DRIVE SHAFT LENGTH FORMULA

L = D - QL = DRIVE SHAFT LENGTH, D = DEPTH ENCLOSURE

Q = SEE TABLE BELOW

FRAME Q

G 130

F 115.5

J & K 133.5

L 103.5

M 129

N 146

Where enclosure depth permits, the drive shaft support should always

be fitted. Drive shaft support not supplied with MLRDVS, MMRDVS.

FRAME MIN ENCLOSURE MAX ENCLOSUREDEPTH DEPTH

G 140 280

F 170 486

J/K 188 504

L 160 474

M 185 500

N 205 520


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M E M S H I E L D 2 M C C B D I S T R I B U T I O N S Y S T E ME A R T H L E A K A G E R E L A Y D I M E N S I O N S

85


CT LIST NO A B C D E

ACT 65 122 58 65 116 148

ACT 90 140 65 90 130 162

CURRENT TRANSFORMERS ACT 45

TYPE A EARTH LEAKAGE RELAYS

ACT 65/90

Memshield 2 P47-91 31/7/02 16:17 Page 42

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