AIR CIRCUIT BREAKERS - Electrical and Electronics Division

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Description A 2 Unit Push Buttons Pendant 159 4 Unit Push Buttons Pendant 273 6 Unit Push Buttons Pendant 391 Note: All dimensions are in mm. OVERALL DIMENSIONS PUSH BUTTON PENDANTS 9/54 9
11 11/1 INTRODUCTION : MOTOR PROTECTION CIRCUIT BREAKER L & T, India’s largest manufacturer of low tension switch gear, introduces Motor Protection Circuit Breakers (MPCBs) for comprehensive protection and control of low tension motors. MPCBs combine the function of a switch, a short circuit protective device and an overload relay. Designed to international standards, their compact size offers OEMs and panel builders multiple advantages in installation and operation. These MPCBs are also provided with a large number of accessories for various applications. MINI UNITS MEGA BENE�ITS L&T’s Motor Protection Circuit Breakers type MG1 and MG2 are small in size but big in performance. They have high making and breaking capacities. The design features offer a range of advantages : ✦ Compact size saves panel space. ✦ Ambient temperature compensation eliminates need for constant current-setting re-adjustment. ✦ Double slide mechanism ensures faster tripping during single phasing in the circuit. ✦ Technical data of circuit breaker can be read easily when circuit breaker is in mounted position. ✦ Unambiguous front ON/O�� indication. ✦ Similar design concept for both circuit breakers facilitates handling. ✦ Identical accessories reduce stock levels. ✦ In-built DIN rail mounting facility makes it suitable for snap fit mounting on 35mm section rail.
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1 C-POWER : C Range Page CE marked
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1 Rating (A) 400 630 800 Type Desig
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1 Rating (A) 1600 2000 2500 Type De
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1 1/6 SR21 SR21E Note : 3 phase, 4
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1 1/8 Type of Protection PROTECTION
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1 1/10 ZONE SELECTIVE INTERLOCKING
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1 1/12 PROTECTION SOLID STATE CHARA
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1 * Not recommended 1/14 PROTECTION
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1 1/16 ACCESSORIES ACB tripping ind
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1 OPERATION COUNTER SRT - 2 for SR2
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1 All Air Circuit Breakers conform
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1 Terminal Orientation* Straight Ho
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1 �or 800 A to 2500 A 3P/4P 1/24
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1 �or 630A - 2000A 3P Note : All
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1 �LAT TERMINAL CONNECTIONS 1/28
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1 1/30 OVERALL DIMENSIONS - TYPE H
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1 �OR �IXED ACBs - 800A to 4000
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1 �OR DRAWOUT ACBs - 3200 D, 4000
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1 1/36 SPRING CHARGE INDICATION (
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2 DS Page �ixed Overload & �ixe
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2 2/1 MOULDED CASE CIRCUIT BREAKERS
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2 Note : �or ordering information
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2 Note : �or ordering information
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2 Auxiliary Contacts 2/7 ACCESSORIE
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2 2/9 TECHNICAL DATA - DS Type Desi
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2 2/11 TECHNICAL DATA - DTH...E Typ
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2 2/13 TECHNICAL DATA - DH Type Des
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2 2/15 TECHNICAL DATA - DL Type Des
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2 2/17 TECHNICAL DATA - DTH Type De
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2 2/19 TECHNICAL DATA - DX..S (3/4
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2 2/21 TECHNICAL DATA - DX..H (3/4
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2 2/23 TECHNICAL DATA - DM Type Des
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2 2/25 TECHNICAL DATA - D� Type D
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2 2/27 I-t CHARACTERISTIC CURVES MC
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2 2/33 125 250 I-t CHARACTERISTIC C
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2 2/35 I-t CHARACTERISTIC CURVES DX
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2 2/37 ORDERING DATA - DG RANGE MCC
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2 2/39 ORDERING DATA - DL RANGE MCC
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2 2/41 ORDERING DATA - DX..S (3 POL
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2 2/43 ORDERING DATA - DM RANGE MCC
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2 Accessory Coil Voltage / Location
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2 2/49 ACCESSORIES - ORDERING DATA
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2 Accessory Type Std. Pack Catalgou
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2 Accessory Type Std. Pack Catalgou
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2 2/57 OVERALL DIMENSIONS DIMENSION
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2 Note: All dimensions are in mm. 2
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2 2/77 OVERALL DIMENSIONS ROTARY OP
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2 2/79 OVERALL DIMENSIONS & CONNECT
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2 2/81 WIRING DIAGRAM EARTH �AULT
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3 SWITCH DISCONNECTOR �USE SD�
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3 3/1 Wide Range of SD�s suitable
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3 Sheet-steel Enclosure 3/3 SHEET S
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3 3/5 Conformance to IS 13947 (Part
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3 ORDERING IN�ORMATION: Ordering
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3 3/11 Conformance to IS 13947 (Par
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3 3/13 WIDE RANGE O� SWITCH DISCO
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3 3/15 Conformance to IS 13947 (Par
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3 ORDERING IN�ORMATION: Ordering
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3 3/19 ACCESSORIES �OR �N RANGE
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3 3/21 SELECTION TABLE �OR HANDLE
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3 �our breaking points per pole w
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3 3/25 ACCESSORIES �OR CHANGEOVER
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3 3/27 B 02, STANDARD REAR MOUNTING
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3 AC SWITCHES (SERIES S, SG & TP) A
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3 The switches of S, TP, SG & RT ty
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3 AC SWITCHES (SERIES-S,SG,RT & TP)
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3 B 33, ROUND PADLOCK Switches are
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3 B 41, DOOR CLUTCH These switches
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3 B 51, KEY OPERATED Switches suita
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3 B 19, STANDARD 22.5 Switches with
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3 Other size mounting plates at fro
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3 SG-TYPE RECTANGULAR S-TYPE STAGE
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3 ISOLATORS 60 o (ON-OFF SWITCHES)
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3 ISOLATORS 45o SPRING RETURN (ON-O
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3 CHANGE OVER SWTICHES 90 o (DOUBLE
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3 MULTI STEP SWITCHES - 60 O (POLE
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3 MULTI STEP SWTICHES - 45 o (POLE
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3 AMMETER SELCTOR SWITCHES...Contd
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3 MOTOR SWITCHES (AC3) STAR DELTA S
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3 CONTROL SWITCHES 3/61 SCRIPT PROG
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3 Example While placing the order,
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3 3/65 ORDERING IN�ORMATION CUSTO
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3 3/71 Extreme overall dimensions O
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3 3/73 OVERALL DIMENSIONS SWITCH-DI
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3 3/75 OVERALL DIMENSIONS SWITCH-DI
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3 3/77 OVERALL DIMENSIONS SWITCH DI
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4 HIGH RUPTURING CAPACITY �USE (H
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4 4/2 TECHNICAL DATA & ORDERING IN
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4 4/4 WIDE RANGE O� BS TYPE �US
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4 4/6 TECHNICAL DATA & ORDERING IN
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4 4/10 PRE-ARCING TIME (SECONDS) CU
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5 Over Current Relays Page Types -
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5 Other Relays Page Types - MX7/5,
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5 5/2 TECHNICAL DATA THREE PHASE OV
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5 5/4 ORDERING IN�ORMATION THREE
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5 5/6 WIRING DIAGRAM CURRENT SENSIN
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5 ✦ Easy Setting through front pa
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5 5/10 ORDERING IN�ORMATION NEUTR
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5 5/12 WIRING DIAGRAM SECONDARY REL
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5 5/14 TECHNICAL DATA ✦ On line d
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5 5/16 ORDERING IN�ORMATION POWER
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5 5/18 WIRING DIAGRAM MOTOR PROTECT
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5 5/20 TECHNICAL DATA GENERATOR PRO
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5 5/22 ORDERING IN�ORMATION GENER
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5 5/24 WIRING DIAGRAM SYNCHRONISING
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5 5/26 TECHNICAL DATA VOLTAGE / �
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5 5/28 ORDERING IN�ORMATION VOLTA
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5 5/30 WIRING DIAGRAM TRANS�ORMER
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5 5/32 TECHNICAL DATA CONTROL & SUP
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5 5/34 ORDERING IN�ORMATION CONTR
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5 5/36 WIRING DIAGRAM REVERSE POWER
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6 MN9 to MN32 Page General Informat
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6 6/1 SALIENT �EATURES O� MN CO
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6 Mechanical �or Contactor type Q
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6 6/7 Catalogue No. suffixes for ra
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6 Auxiliary Contact Block Ie Ie Aux
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6 6/11 Catalogue No. suffixes for r
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6 Auxiliary Contact Block Ie Ie Aux
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6 6/15 Catalogue No. suffixes for r
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6 6/17 MN45 MN65 Mechanical Life Op
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6 6/19 MN185 MN225 Mechanical Life
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6 6/21 MN9W MN12W MN16W MN25W Mecha
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6 6/23 ML0 ML1 ML1.5 ML2 ML3 Mechan
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6 6/25 MM00-AC MM01-AC MM00-DC MM01
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6 6/27 ELECTRICAL LI�E CURVES - T
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6 6/29 ELECTRICAL LI�E CURVES - T
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6 6/31 TERMINAL ARRANGEMENTS - TYPE
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6 6/33 TERMINAL ARRANGEMENTS CONTRO
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7 THERMAL OVERLOAD RELAYS MN1 to MN
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7 MN12 MN12L 7/2 THERMAL OVERLOAD R
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7 7/4 �or Contactor Setting Wt Qt
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7 TECHNICAL DATA �OR THERMAL OVER
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7 7/8 I-T CHARACTERISTICS 3 POLE BA
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8 MN16 to MN65 Page 3-phase control
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8 MA25 Page 3-phase control upto 30
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8 MN16 MN25 8/2 DIRECT-ON-LINE STAR
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8 ✦ Both �ASD and SASD version
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8 ✦ Only �ASD version available
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8 Catalogue No. suffixes for rated
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8 MA25SASD/�ASD 8/10 STAR-DELTA S
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8 ML3 8/12 DIRECT-ON-LINE STARTER -
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8 ✦ Single phase and overload pro
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8 MK1 8/22 STAR-DELTA STARTERS - TY
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8 Sr.No. 1 0.125 0.09 0.4 0.3 - 0.5
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8 Sr. No. 1 1 0.75 2.1 1.21 0.9 - 1
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8 Sr. No. 1 1 0.75 1.8 1.04 1 - 1.6
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8 1 0.05 0.04 0.75 0.15 - 0.25 2 A
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8 8/38 MN16 �ASD MN25, MN32 �AS
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8 8/40 WIRING DETAILS MA25 �ASD M
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8 8/42 ML2 �ASD ML3 �ASD WIRING
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8 8/44 M�1 DOL (3 PHASE) STARTERS
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9 Cable Ducts Page Product Data - T
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9 ✦ Manufactured from specially c
Page 365 and 366: 9 S.No. Channel with Cover Width x
Page 367 and 368: 9 9/5 ORDERING DATA - TYPE B Descri
Page 369 and 370: 9 9/7 SALIENT �EATURES O� LIMIT
Page 371 and 372: 9 PC 600 SERIES SNAP PUSH ROD OPERA
Page 373 and 374: 9 PC 1000 SERIES SNAP WITH 1.2 KG P
Page 375 and 376: 9 9/13 TECHNICAL DATA LIMIT SWITCHE
Page 377 and 378: 9 9/15 ORDERING DATA Description Ca
Page 379 and 380: 9 9/17 SALIENT �EATURES O� TIME
Page 381 and 382: 9 9/19 ACCESSORIES Accessory Type D
Page 383 and 384: 9 9/21 RANGE AND ORDERING DATA ELEC
Page 385 and 386: 9 9/23 TECHNICAL DATA ELECTRONIC TI
Page 387 and 388: 9 Type 9/25 TECHNICAL DATA HOUR MET
Page 389 and 390: 9 ✦ Elegant and light weight. ✦
Page 391 and 392: 9 9/29 RANGE AND ORDERING DATA SELE
Page 393 and 394: 9 9/31 LENS CAP Colour SPARES Catal
Page 395 and 396: 9 BA 9S type 9/33 ACCESSORIES �IL
Page 397 and 398: 9 9/35 RANGE AND ORDERING DATA PUSH
Page 399 and 400: 9 9/37 GENERAL PURPOSE ENCLOSURES P
Page 401 and 402: 9 9/39 RANGE AND ORDERING DATA PUSH
Page 403 and 404: 9 9/41 TECHNICAL DATA Rated Voltage
Page 405 and 406: 9 Note: All dimensions are in mm. 9
Page 409 and 410: 9 9/47 PC�S-1 COMPACT TYPE Note:
Page 415: 9 9/53 Description L P Note: All di
Page 419 and 420: 11 Rated current (A) 11/3 SELECTION
Page 421 and 422: 11 Number of poles 3 3 Max. rated c
Page 423 and 424: 11 11/7 I-t CHARACTERISTICS - MG1
Page 425 and 426: 11 Note: All dimensions are in mm.
Page 427 and 428: 12 Series 26 D 19 M Type MPP-D MPP-
Page 429 and 430: 12 Series 16 � 20 � Type MD �
Page 431 and 432: 12 OVERALL DIMENSIONS - SERIES 19 M
Page 433 and 434: 12 OVERALL DIMENSIONS - SERIES 61 M
Page 435 and 436: 12 Output, Qn kVAr 10 13.91 20�31
Page 437 and 438: 12 Output, Qn kVAr 30 15+15 41.78 1
Page 439 and 440: 12 Output, Qn kVAr 45 15 x 3 62.68
Page 441 and 442: 12 Output, Qn kVAr 80 20 x 4 111.43
Page 443 and 444: ✦ Current Reversal Indication ✦
Page 445 and 446: Accuracy Class 1.0 - IEC 1036 / IS
Page 447 and 448: PRODUCT HIGHLIGHTS DISPLAY PARAMETE
Page 449 and 450: ORDERING IN�ORMATION ELECTRONIC E
Page 451 and 452: Note: All dimensions are in mm. OVE
Page 453 and 454: Note: All dimensions are in mm. PAN
Page 455 and 456: DISTRIBUTION BOARDS & ENCLOSURES 30
Page 457 and 458: DISTRIBUTION BOARDS & ENCLOSURES co
Page 459 and 460: NEW PROTECTION DEVICES miniature ci
Page 461 and 462: NEW AUTOMATION & CONTROL DEVICES is
Page 463 and 464: NEW AUTOMATION & CONTROL DEVICES th
Page 465 and 466: volta enclosures IP30 insulated flu
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miniature circuit breakers - Type N
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esidual current circuit breakers (R
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PROTECTION DEVICES, AUTOMATION & CO
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twilight switch The switch measures
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thermostats These devices can be us
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16A plug & socket board with SP MCB
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INDVICTA RANGE DIMENSIONS Indvicta
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SYSTEM BUILDING WITH INDVICTA DISTR
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Cosmos Phase changeover universal d
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Data Communication Components Page
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BUS US ENCLOSURE ENCLOSURE BG BG (P
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COMP COMPACT COMP CT ENCLOSURE ENCL
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COMP COMPACT COMP CT ENCLOSURES ENC
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MODULE MODULE COMBI COMBI SYSTEM SY
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EX EX ENCLOSURES ENCLOSURES KEL KEL
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482.6 482.6 MM MM (19") (19") SUBRA
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METRIC METRIC SUBRA SUBRACK SUBRA C
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SUBRA SUBRACKS/CASES SUBRA CKS/CASE
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RITT RITTAL RITT AL ELECTR ELECTRON
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RITT RITTAL RITT AL VARIO-RA ARIO-R
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WALL ALL MOUNTED MOUNTED COOLING CO
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AIR/W AIR/WATER AIR/W TER HEA HEAT
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RA RACK-MOUNTED RA CK-MOUNTED F FFA
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Bar thickness (cross-section) PLS 8
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* AWG = American Wire Gauges AWG 10
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DK DK NETW NETWORK NETW ORK ENCLOSU
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DK DK NETW NETWORK NETW ORK ENCLOSU
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DK DK SMALL SMALL FIBRE-OPTIC FIBRE
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FM FM WALL-MOUNTED ALL-MOUNTED DIST
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CS CS OUTDOOR OUTDOOR MODULAR MODUL
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SALIENT �EATURES O� INDICATING
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ACCESSORIES Accessory Type Catalogu
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DC Voltmeters DC Ammeters RC. MOVIN
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Special DC Meters RD. SPECIAL DC ME
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TECHNICAL DATA Type of Moving iron
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AIR CIRCUIT BREAKERS - Electrical and Electronics Division

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