Unlock your applications

with a wide range of Controlgear products

A peek into the past
Glorious history replete with milestones

It all began way back in the 1960's when Larsen & Toubro embarked
on a momentous voyage and started its controlgear business. Right
from the launch of MK series more than 50 years ago, L&T has been
at the forefront of controlgear product development. Over the years,
this excellent range has grown in width of its offerings, size, etc.

Hence, it comes as no surprise today that L&T has won the

confidence and trust of millions of its customers across the globe.

1960 MK

1990 MN
1970 ML

2002 MNX

2010 MO
Meet the All-rounder
One-Stop solution for every application

Industry requirements are constantly evolving and our clients'

demands are ever-increasing. A scenario which may seem as a
challenge to many is seen by us as an opportunity to learn and
grow. An opportunity to excel in our commitments and exceed
customer expectations.

Due to our through understanding and in-depth knowledge of

customer requirements, we make sure that our extensive range of
contactors caters to every single customer need. Our contactors
are well suited for varied applications such as motor control,
capacitor duty switching, single phase applications, supply
changeover and many more. In short, we are a one-stop solution
for every application.
Pillars of support
Providing much-needed support

Our extensive range of contactors is further augmented by our

range of thermal overload relays, giving reliable protection across
diverse applications.

MN relays are available from 0.2 to 570A in trip class 10A and 30.
Relays can be directly mounted on contactors for space-saving or
through separate mounting kits, depending on the requirement.

MO contactors along with RTO relays, MNX contactors along with

RTX relays and MX contactors along with MX-R0 relays are perfect
examples of these compact motor feeders.
A holistic approach
Adding value, assuring results

Our wide range of accessories has been specifically designed and

developed to suit diverse application requirements. From add-on
blocks to surge suppressors and mechanical interlock kits to
protection shrouds, you name it, we have it.

With a wide range of accessories complementing our switchgear

products, our controlgear range is the most comprehensive to
meet all our customer needs.
Up and running, always
Less downtime, more productivity

If downtime is not brought under control, it can spell doom for any
industry. This makes reducing down time one of the most
important needs of the industry. Equally significant is ease of
maintenance.

L&T offers a wide range of spares for its contactors, right from the
lowest rating. The contactors are extremely easy to inspect and
this, coupled with easily replaceable coil and contacts, ensures
reduction in downtime and maintenance time. In other words, one
can always be assured of high levels of productivity and efficiency.
 The comprehensive range of controlgear products from L&T Switchgear is your key to meet every
demand and suit every requirement across diverse applications.

Whether it is motor control, capacitor switching, supply changeover or any other single phase or
three phase application, you can always be assured of finding a perfect solution in our
extensive range of contactors.

Thermal overload relays with their sensitive mechanism ensure that your system is protected against
overloads. Motor Protection circuit breakers combine both overload and short circuit protection
in a single compact solution.

To complement these products, we also have a wide range of accessories and

spares to ensure that support is always at hand.

In other words, our controlgear range is a one-stop solution for every application.
INDEX
MO 3 Pole Power Contactors 1

RTO Thermal Overload Relays 17

MNX 3 Pole Power Contactors 21

MN Thermal Overload Relays 31

RTX Thermal Overload Relays 37

MDX DC Coil 3 Pole Power Contactors 41

ML 3 Pole Power Contactors 49

MX Mini Contactors 57

MCX 4 Pole Power Contactors 65

MO C Capacitor Duty Contactors 77

MN0 Auxiliary Contactors 85

MR Single Pole Contactors 89

MOG Motor Protection Circuit Breakers 93

MO 3 Pole Power Contactors

MO Contactors, with their unique styling and visual appeal provide a unique blend of aesthetics with reliable
performance. The contactors, available from 9A to 110A AC-3 are suited for general purpose as well as special
purpose machines. Their compact design ensures savings in panel space and being RoHS compliant they
provide all the benefits of a clean and green contactor.
Open doors to new dimensions
in space economy
03 Overview

Cassette type bridge for easy

contact replacement Compact Mechanical Interlock

Safety shrouds for power terminals to Box clamp terminations for

ensure safe maintenance environment faster termination

Modular load feeder

Key Features 04

MO
C O N TA C T O R S

Completely shrouded and safe

l
Compact thus saving panel space
l
Unique styling and visual appeal
l
Standardized accessories for entire
range reducing inventory costs
l
Lug less termination for fast
termination and significant
reduction in wiring costs
l
Low VA consumption thus
reducing control transformer
size
l
Wide range of
accessories to
meet all applications

In keeping with the mission to deliver the best, Larsen & Toubro understands the requirements of the RoHS
directive. The directive restricts the use of hazardous substances in electrical and electronic equipment and
bans electrical equipment containing more than permitted levels of lead, cadmium, mercury, hexavalent
chromium, polybrominated biphenyl (PBS) and polybrominated diphenyl ether (PBDE) flame retardants.

MO 3 Pole Power Contactors

05 Technical Details

Range from 9A-110A AC-3

l

Compact dimensions saving precious panel space

l

DIN Rail mounting facility upto 110A

l

Lug less termination

l

Standardized accessories throughout the range

l

Low VA consumption
l

RoHS compliant
l

MO 9 MO 12 MO 18 MO 25 MO 32
Catalogue No.
CS94564 CS94565 CS94566 CS94567 CS94568

Conformance to standards
Power Contacts
No. of poles 3 3 3 3 3
Rated insulation voltage, Ui 690V 690V 690V 690V 690V
Rated impulse withstand voltage, Uimp 8 kV 8 kV 8 kV 8 kV 8 kV
Utilization category AC-1 30A 35A 40A 45A 50A
Rated operational
Utilization category AC-2 9A 12A 18A 25A 32A
current, Ie
Motor duty: 3, 415V, 50Hz Utilization category AC-3 4 kW / 5.5hp / 9A 5.5 kW / 7.5hp / 12A 9.3 kW / 12.5hp / 18A 11 kW / 15hp / 25A 17.3 kW / 22.5hp / 32A
Utilization category AC-4 4 kW / 5.5hp / 9A 5.5 kW / 7.5hp / 12A 9.3 kW / 12.5hp / 18A 11 kW / 15hp / 25A 17.3 kW / 22.5hp / 32A
Making capacity 400 450 450 550 550
Breaking capacity, 415V AC 350 350 350 550 550
Mechanical life, No. of operating cycles 10 million 10 million 10 million 10 million 10 million
Mechanical 7200 7200 7200 7200 7200
Max. Frequency of Utilization category AC-2 750 750 750 750 750
operations
Operating cycles / hr Utilization category AC-3 750 750 750 750 750
Utilization category AC-4 300 300 300 300 300
Service temperature
2
Solid conductor (mm ) 2 x 10 2 x 10 2 x 10 2 x 10 2 x 10
Main terminal capacity Stranded conductor (mm2) 2 x 10 2 x 10 2 x 10 2 x 10 2 x 10
2
Finely standard conductor (mm ) 2x6 2x6 2x6 2x6 2x6
Auxiliary Contacts
No. of snap on aux. contact poles (Side or Front Mounting) 4 4 4 4 4
Conventional thermal current, Ith 10A 10A 10A 10A 10A
AC-15 rating at 415V, 50Hz 4A 4A 4A 4A 4A
Terminal capacity (solid or multi stranded conductors) (mm2) 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5
Coil Characteristics
Voltages available for AC-50Hz operative, Uc (V)
Pick-up (VA) 77 77 77 77 77
VA 9 9 9 9 9
Hold-On
Watts 2.8 2.8 2.8 2.8 2.8
Pick-up (% Uc) 75 - 110 75 - 110 75 - 110 75 - 110 75 - 110
Limits of operations
Drop-off (% Uc) 35 - 65 35 - 65 35 - 65 35 - 65 35 - 65
H 83.5 83.5 83.5 83.5 83.5
Overall Dimensions (mm) W 45 45 45 45 45
D 93.5 93.5 93.5 93.5 93.5
 06

MO 40 MO 45 MO 50 MO 60 MO 70 MO 80 MO 95 MO 110
CS94569 CS94570 CS94572 CS94573 CS94574 CS94576 CS94577 CS94578

IS/IEC 60947-4-1, IEC 60947-4-1, EN 60947-4-1

3 3 3 3 3 3 3 3
690V 690V 1000V 1000V 1000V 1000V 1000V 1000V
8 kV 8 kV 8 kV 8 kV 8 kV 8 kV 8 kV 8 kV
50A 50A 65A 80A 100A 125A 125A 140A
40A 45A 50A 60A 70A 80A 95A 110A
22.5kW / 30hp / 40A 25kw / 34hp / 45A 30kW / 40hp / 50A 33.5kW / 45hp / 60A 37kW / 50hp / 70A 40kW / 54hp / 80A 45kW / 60hp / 95A 55kW / 75hp / 110A
22.5kW / 30hp / 40A 25kw / 34hp / 45A 30kW / 40hp / 50A 33.5kW / 45hp / 60A 37kW / 50hp / 70A 40kW / 54hp / 80A 45kW / 60hp / 95A 55kW / 75hp / 110A
550 550 1000 1000 1000 1500 1500 1500
550 550 900 900 900 1200 1200 1200
10 million 10 million 10 million 10 million 10 million 10 million 10 million 10 million
7200 7200 3600 3600 3600 3600 3600 3600
750 750 750 750 750 750 750 750
750 750 750 750 750 750 750 750
300 150 300 300 150 150 150 150
0 0
-50 C to 55 C
2 x 10 2 x 10 - - - - - -
2 x 10 2 x 10 2 x 35 2 x 35 2 x 35 2 x 70 2 x 70 2 x 70
2x6 2x6 2 x 25 2 x 25 2 x 25 2 x 50 2 x 50 2 x 50

4 4 6 6 6 8 8 8
10A 10A 10A 10A 10A 10A 10A 10A
4A 4A 4A 4A 4A 4A 4A 4A
2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5

24, 42, 110, 220, 240, 360, 415, 525

77 77 144 144 144 240 240 240
9 9 15 15 15 25 25 25
2.8 2.8 5 5 5 6.5 6.5 6.5
75 - 110 75 - 110 75 - 110 75 - 110 75 - 110 75 - 110 75 - 110 75 - 110
35 - 65 35 - 65 35 - 65 35 - 65 35 - 65 35 - 65 35 - 65 35 - 65
83.5 83.5 124 124 124 135 135 135
45 45 55 55 55 70 70 70
93.5 93.5 122 122 122 135 135 135

MO 3 Pole Power Contactors

07 Accessories

Add-on auxiliary contact block, suitable for all MO contactors

MO Top Add-on Block MO Right Add-on Block

Mounting Position Contacts Terminal Marking Cat. Nos.

Side Mounted First Left 1 NO + 1 NC 13 - 14, 21 - 22 CS94580OOOO
Side Mounted First Right 1 NO + 1 NC 33 - 34, 41 - 42 CS94581OOOO
Side Mounted Second Left 1 NO + 1 NC 53 - 54, 61 - 62 CS94582OOOO
Side Mounted Second Right 1 NO + 1 NC 73 - 74, 81 - 82 CS94583OOOO
Top Mounted Single Pole 1 NO 13 - 14 CS94585OOOO
Top Mounted Single Pole 1 NC 11 - 12 CS94586OOOO
Top Mounted Two Pole 2 NO 13 - 14, 23 - 24 CS94591OOOO
Top Mounted Two Pole 1 NO + 1 NC 13 - 14, 21 - 22 CS94592OOOO
Top Mounted Two Pole 2 NC 11 - 12, 21 - 22 CS94593OOOO
Top Mounted Four Pole 4 NO 13 - 14, 23 - 24, 33 - 34, 43 - 44 CS94594OOOO
Top Mounted Four Pole 3 NO + 1 NC 13 - 14, 23 - 24, 33 - 34, 41 - 42 CS94595OOOO
Top Mounted Four Pole 2 NO + NC 13 - 14, 23 - 24, 31 - 32, 41 - 42 CS94596OOOO
Top Mounted Four Pole 1 NO + 3 NC 13 - 14, 21 - 22, 31 - 32, 41 - 42 CS94597OOOO
Top Mounted Four Pole 4 NC 11 - 12, 21 - 22, 31 - 32, 41 - 42 CS94598OOOO

Adapter link for mounting MN5 Relays on MO Contactors

Description Cat. No.
Link for Mounting MN5 Relay on MO 50/60/70 CS96433OOOO
Link for Mounting MN5 Relay on MO 80/95/110 CS96432OOOO

Mechanical Interlock Kit MO Spreader Link Kit

Description Cat. No. Description Cat. No.

MO 9-110 Mechanical Interlock Kit CS94584OOOO MO 9-45 Spreader Link Kit CS94274OOOO
Note: MO MIL Kit contains inbuilt 2 NC contacts Note: Spreader Link Kit consists of six terminals
Ordering Information 08

MO Contactors
AC1 Rating AC3 Rating
Type Cat. Nos.*
(A) (A)

MO 9 30 9 CS94564
MO 12 35 12 CS94565
MO 18 40 18 CS94566
MO 25 45 25 CS94567
MO 32 50 32 CS94568
MO 40 50 40 CS94569
MO 45 50 45 CS94570
MO 50 65 50 CS94572
MO 60 80 60 CS94573
MO 70 100 70 CS94574
MO 80 125 80 CS94576
MO 95 125 95 CS94577
MO 110 140 110 CS94578

MO Spares
Type Spare Contact Kit Spare Coil *

MO 9 CS96380OOOO
MO 12 CS96381OOOO
MO 18 CS96382OOOO
MO 25 CS96383OOOO CS96317
MO 32 CS96384OOOO
MO 40 CS96385OOOO
MO 45 CS96386OOOO
MO 50 CS96387OOOO
MO 60 CS96388OOOO CS96318
MO 70 CS96389OOOO
MO 80 CS96390OOOO
MO 95 CS96391OOOO CS96319
MO 110 CS96392OOOO

* Add 4 digit suffix as per required coil voltage given below.

Ordering Suffix for Coil Voltages

Std Coil voltage at 50Hz 24 42 48 110 220 240 360 380 415 440 525
Ordering Suffix GOOO JOOO HOOO AOOO KOOO BOOO COOO LOOO DOOO POOO MOOO

MO 3 Pole Power Contactors

09 Contactor Selection Chart

For Control of 3 Phase Slip-ring Induction Motors

According to IEC 60947-4-1: AC-2 Utilization category
Three kinds of contactors are used to control three-phase slip-ring motors:
lThe Stator Contactors
lThe Acceleration Contactors
lThe Rotor Short Circuit Contactors

Stator Contactors
The starting current is determined by the value of rotor resistance. It may reach 1.5 to 4 times rated motor
operational current. The table below gives permissible values of Ie/AC-2 rated operational stator current, as a
function of the load factor. The table is valid for a maximum switching frequency of 600 cycles an hour and a
temperature of 550C max near the contactor.

Contactors MO 9 MO 12 MO 18 MO 25 MO 32 MO 40 MO 45 MO 50 MO 60 MO 70 MO 80 MO 95 MO 110
15% le/AC-2 (A) 13.5 19 26 35 50 55 55 70 95 125 125 200 220
25% le/AC-2 (A) 12 17 23 32 45 50 50 63 85 110 110 165 185
Load Factor
40% le/AC-2 (A) 10.5 15 19.5 27 39 42 42 54 73 95 95 135 150
60% le/AC-2 (A) 9.5 13 17.5 2 34 37 37 48 65 85 85 120 135

Acceleration Contactors
The sizing of these contactors is based on the AC-1 rated operational current. Delta connection of these
contactors is considered (reduce currents by 35% if star connection is used). The table below lists the
permissible limit value of the motor rated operational rotor current. This table takes into account the number
of cycles per hour (without inching) and the current flow time per cycle, in the contactor.

Contactors MO 9 MO 12 MO 18 MO 25 MO 32 MO 40 MO 45 MO 50 MO 60 MO 70 MO 80 MO 95 MO 110
Rated operational current le/AC-1
for air temperature near the 22 25 27 40 55 60 60 85 95 105 105 135 145
contactor < = 550C

Rotor Short-Circuit Contactors

The duty of this contactor is characterised by small closing stresses. The decisive factor while selecting a
contactor is the thermal stress. Delta connection of the contactor is considered (reduce currents by 35% if
star connection is used). The following table gives the permissible values of the rated operational rotor
0
current, as a function of load factor. Temperature : 55 C maximum near the contactor.

Contactors MO 9 MO 12 MO 18 MO 25 MO 32 MO 40 MO 45 MO 50 MO 60 MO 70 MO 80 MO 95 MO 110
15% le/AC-2 (A) 45 58 70 105 112 125 125 160 210 245 245 290 330
25% le/AC-2 (A) 40 51 63 93 102 115 115 140 180 215 215 260 300
Load Factor
40% le/AC-2 (A) 35 42 54 80 87 95 95 120 155 185 185 230 260
60% le/AC-2 (A) 30 39 47 70 76 86 86 110 140 163 163 200 230
Rated operational rotor
1100
voltage : Maximum value 2200 (2600)
(1320 if star connection)
for starting and breaking (V)
Maximum value for
550 690 (730)
starting and electrical
(600 if star connection)
breaking (V)
Contactor Selection Chart 10

For Lighting Circuit Switching

According to IEC 60947-4-1: AC-5a, 5b Utilization category
The operating conditions of lighting circuits have the following characteristics:
lContinuous duty: the switching device can remain closed for several days or even months
lA dispersion factor of 1: all luminaries in the same group are switched ON or OFF simultaneously
lA relatively high temperature around the device due to the enclosure, the presence of fuses, or
an unventilated control panel location

Contactor Selection
Based on: Considerations:

A 220/240V single-phase circuit

l The total current
l

An ambient temperature of 550C, taking into

l Transient phenomena which occur at switch-on
l

account the operating conditions The starting current and their duration
l

An electrical life of more than 10 years

l The circulation of any harmonics which may be
l

present

Incandescent and halogen lamps

Voltage: 220/240V AC

Lamp characteristics Maximum permissible number of lamps per phase

W A MO 9 MO 12 MO 18 MO 25 MO 32 MO 40 MO 45 MO 50 MO 60 MO 70 MO 80 MO 95 MO 110
60 0.27 57 65 70 103 142 155 155 220 246 272 272 355 390
100 0.45 34 38 42 62 85 93 93 132 147 163 163 210 240
200 0.91 17 19 20 30 42 46 46 65 73 80 80 105 120
300 1.37 11 12 13 20 28 30 30 43 48 53 53 70 80
500 2.28 6 7 8 12 16 26 26 26 29 32 32 42 48
1000 4.55 3 4 4 6 8 13 13 13 14 16 16 21 24

Fluorescent lamps with starter single fitting

Voltage: 220/240V AC

Lamp characteristics Maximum permissible number of lamps per phase

W A MO 9 MO 12 MO 18 MO 25 MO 32 MO 40 MO 45 MO 50 MO 60 MO 70 MO 80 MO 95 MO 110
Non Corrected

20 0.39 41 41 53 66 89 112 112 143 143 143 205 205 410

40 0.45 35 35 46 57 77 97 97 124 124 124 177 177 354
65 0.70 22 22 30 37 50 62 62 80 80 80 114 114 228
80 0.80 20 20 26 32 43 55 55 70 70 70 100 100 200
110 1.2 13 13 17 21 29 36 36 46 46 46 66 66 132
With parallel Correction

20 0.17 94 94 123 152 205 258 258 329 329 329 470 470 940
40 0.26 61 61 80 100 134 169 169 215 215 215 367 367 614
65 0.42 38 38 50 61 83 104 104 133 133 133 190 190 380
80 0.52 30 30 40 50 67 84 84 107 107 107 153 153 306
110 0.72 22 22 29 36 48 61 61 77 111 111 222 222 266

MO 3 Pole Power Contactors

11 Contactor Selection Chart

Three phase Transformer Switching

According to IEC 60947-4-1 Utilization Category: AC-6a
A very high peak current of extremely short duration is produced when a low-voltage transformer is
switched on.These inrush currents, which are caused by the initial build-up of the magnetic field, may
be as high as 30 times the rated current of the transformer. The inrush currents are, however, different
for each transformer type. They are dependent on the following:

The position of transformer winding

l

The characteristic values of the magnetic circuit

l

The phase angle of the voltage at the instant of switch-on

l

Contactor selection is based on the making and continuous current carrying capacity.
Selection Table
AC operated contactors MO 9 MO 12 MO 18 MO 25 MO 32 MO 40 MO 45 MO 50 MO 60 MO 70 MO 80 MO 95 MO 110

Operational Power at
Ue : 50 / 60Hz

220 / 440V kVA 4 4 5 9.5 13 15 15 19 20 22 22 23 26

415 / 440V kVA 8 8 9 18 24 28.5 28.5 36 38 41 41 43 50

Maximum
Permissible Ipeak A 330 330 360 750 1000 1200 1200 1500 1600 1700 1700 1800 2100

Maximum permissible control cable lengths 11

The permissible length of control cable for 50Hz networks is given by the formula below:-

m PH x 106
Lperm @
3.184 meters
1+m Uc2 x Cc

where,
m is the per unit drop-off voltage of contactor in V
Ud is the minimum drop-off voltage in V
Uc is the rated control supply voltage in V
PH is the rated hold-on power of the contactor in VA
Cc is the cable capacitance in microfarad/km

Hold-on Per Unit

Family Contactors Power Drop-off Max. Length, L (in meters)
(PH) (m)

(VA) Ud / Uc 110V AC 240V AC 415V AC

MO 9 - 45 9 0.35 3069.0 644.7 215.6

MO
MO 50 - 70 15 0.35 5115.0 1074.5 359.4

MO 80 - 110 25 0.35 8525.0 1790.8 598.9

Notes:
l All values for 50Hz Coil Voltage
l Cable Capacitance (CC) assumed 0.2 microfarad/km
l The values need to be corrected for decrease in permanent air gap if the contactor is required to perform more than
1 million operating cycles, the correction factor is approximately 0.5
Electrical Life Curves 12

Utilisation Category AC-3

MO110
MO12

MO18

MO25

MO32
MO40
MO45

MO50
MO60
MO70
MO80

MO95
MO9

10
9
8

7
No. of Operating Cycles in Millions

1
1 2 3 4 5 6 7 8 9
10 2 3 4 5 6 7 8 9
100
Operational Current, le in Amperes

Utilisation Category AC-4

MO110
MO12

MO18

MO25

MO32

MO40
MO45

MO50

MO60
MO70

MO80
MO95
MO9

10009
8
7
6
5

4
No. of Operating Cycles in 000

1009
8
7
6
5

10
1 2 3 4 5 6
10
7 82 9 3 4 5 6 7 8 9
100
Operational Current, le in Amperes

MO 3 Pole Power Contactors

13 Overall Dimensions

MO Frame I: 9, 12, 18, 25, 32, 40, 45

Overall Dimensions with Auxiliary Contact Block
10.5 10.5 10.5

83.5 Contactor Height

113
60
56
28
19.6

12 22.8 12
35 60
45 Contactor Width 70

Overall Dimensions with Mechanical Interlock

45 12 45 102
93.5 Contactor Depth

61.5

47
72.5
39.5

14.4 14.4
50

26
43
27

All dimensions in mm.

Overall Dimensions 14

MO Frame II: 50, 60, 70

Overall Dimensions with Auxiliary Contact Block
10.5 10.5 10.5
160

142
18 18

68
39
29.5
100
1 L1 3 L2 5 L3
105
123.6 (contactor Height)
45
12 55 12
26
43
82

27

MO 70

2 T1 4 T2 6 T3

Overall Dimensions with Mechanical Interlock

55 12 55

122

1 L1 3 L2 5 L3 1 L1 3 L2 5 L3
122 (contactor Depth)

MO 70 MO 70
83

2 T1 4 T2 6 T3 2 T1 4 T2 6 T3
50

All dimensions in mm.

MO 3 Pole Power Contactors

15 Overall Dimensions

MO Frame III: 80, 95, 110

Overall Dimensions with Auxiliary Contact Block

44
10.5 10.5 10.5

M0-SAL
15
174.3

2.5
154.3

8
135
Contactor Height
74.2

68.3
46.2
30.2

34.8
12 12
60 M4 Mounting Screw

70 8.5
23.3 23.3
Contactor Width

1 L1 3 L2 5 L3

32
31
34
33
115
93.1

120
27

26
43

33
34
31
32

MO 110

2 T1 4 T2 6 T3

All dimensions in mm.

Overall Dimensions 16

MO Frame III: 80, 95, 110

Overall Dimensions with Auxiliary Contact Block

70 70
Contactor Depth
134.5

88.5

55.6

152

1 L1 3 L2 5 L3 1 L1 3 L2 5 L3
61.5
47

MO 110 MO 110

2 T1 4 T2 6 T3 2 T1 4 T2 6 T3

Note: Mechanical interlock kit can be fitted even with side auxiliary
contacts in that case width will increase by 12 mm per auxiliary
contact block.

All dimensions in mm.

MO 3 Pole Power Contactors

MNX 3 Pole
Power Contactors

MNX power contactors are mainly used in motor feeder and control system applications. The range, available
from 9A to 650A (AC-3) provides a reliable performance across diverse conditions like high ambient temperature,
humidity etc. Standardized accessories and spares are available for the entire range.
Reach out to reliability
23 Technical Details

Range from 9-650A AC3

l

Coil on top design 95A and above

l
Built-in 2 NO + 2 NC auxiliary contacts for 45A & above
l

Entire range is UL listed

l

MNX 9 MNX 12 MNX 18 MNX 22

Catalogue No. CS 94106 / 7* CS 94108 / 9* CS 94100 / 1* CS 94980 / 81*
Conformance to standards
Power Contacts
No. of poles 3 3 3 3
Rated insulation voltage, Ui 690V 690V 690V 690V
Rated impulse withstand voltage, Uimp 8 kV 8 kV 8 kV 8 kV
Rated making capacity - (Amp) 450 450 450 450
Rated breaking capacity - (Amp) 200 250 250 250
Utilization category AC-1 25A 30A 30A 32A
Rated operational current, Utilization category AC-2 9A 12A 18A 22A
I e At 550C
Utilization category AC-3 4 kW / 5.5hp / 9A 5.5 kW / 7.5hp / 12A 9.3 kW / 12.5hp / 18A 11 kW / 15hp / 22A
Motor duty : 3, 415V, 50Hz
Utilization category AC-4 4 kW / 5.5hp / 9A 5.5 kW / 7.5hp / 12A 9.3 kW / 12.5hp / 18A 11 kW / 15hp / 22A
Operational current Ie for AC-4 Utilization category
5.5A 7.1A 8A 8.5A
at 415V, 3, 50Hz for 2,00,000 operating cycles
Capacitor switching delta connected: 415V, 50Hz *** 6 kVAr 7.5 kVAr 9 kVAr 9 kVAr
Max. Permissible peak in-rush current, Ip for capacitor switching 570A 680A 750A 750A
DC 1 - 110V 9A 12A 18A 22A
DC 1 - 220V 9A 12A 18A 22A
DC ratings
DC 3 - 110V 9A 12A 18A 22A
(with 3 poles in series)
DC 3 - 220V 9A 12A 18A 22A
and AC coil operation
DC 5 - 110V 9A 12A 18A 22A
DC 5 - 220V 6A 7.5A 9A 9A
Mechanical life, No. of operating cycles 15 x 106 15 x 106 15 x 106 15 x 106
Mechanical 7200 7200 7200 7200
Max. frequency of Utilization Category AC-1 3000 3000 3000 3000
operations: Utilization Category AC-2 750 750 750 750
Operating cycles/hr Utilization Category AC-3 750 750 750 750
Utilization Category AC-4 300 300 300 300
Service temperature -200C to +550C -200C to +550C -200C to +550C -200C to +550C
Lug (mm2) 1x6 1x6 1x6 1x6
Link (mm2) - - - -
Main terminal capacity
Solid Conductors (mm2) 2x4 2x4 2x4 2x4
Multi strand conductors (mm2) 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5
Auxiliary Contacts
No. of built-in auxiliary contacts 1 NO or 1 NC 1 NO or 1 NC 1 NO or 1 NC 1 NO or 1NC
Conventional thermal current, Ith at 550C 10A 10A 10A 10A
AC-15 rating at 415V, 50Hz 4A 4A 4A 4A
Terminal capacity (Solid or multi strand conductors (mm2) 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5
Coil

Voltage available for 50Hz Uc (V) 24, 42, 110, 24, 42, 110, 24, 42, 110, 24, 42, 110,
220, 240, 415, 525 220, 240, 415, 525 220, 240, 415, 525 220, 240, 415, 525
VA 68 68 68 68
Pick-up
Cos 0.82 0.82 0.82 0.82
VA 11 11 11 11
Hold-on
Watts 4 4 4 4
Pick-up (%Uc) 65 - 120 65 - 120 65 - 120 65 - 120
Limits of operation
Drop-off (%Uc) 35 - 50 35 - 50 35 - 50 35 - 50
Overall dimensions H x W x D in mm 83 x 45 x 88 83 x 45 x 88 83 x 45 x 88 83 x 45 x 88
* With 1NC Auxiliary Contacts # Add - on block can be ordered separately
*** For Capacitor Switching, please connect inductor in series 60Hz & 50/60Hz Coils available on request
 24

MNX 25 MNX 32 MNX 40 MNX 45 MNX 50 MNX 70 MNX 80

CS 94110 CS 94111 CS 94190 ST 19000 ST 19001 ST 19002 ST 19003
IS/IEC 60947-4-1 & IEC 60947-4-1, BSEN 60947-4-1

3 3 3 3 3 3 3
690V 690V 690V 690V 690V 690V 690V
8 kV 8 kV 8 kV 8 kV 8 kV 8 kV 8 kV
480 550 550 900 900 900 900
400 500 500 750 750 750 750
45A 55A 55A 85A 85A 100A 100A
25A 32A 40A 45A 50A 70A 80A
11 kW / 15hp / 25A 17 kW / 22.5hp / 32A 22.5 kW / 30hp / 40A 25 kW / 34hp / 45A 26 kW / 35hp / 50A 37 kW / 50hp / 70A 40 kW / 54hp / 80A
11 kW / 15hp / 25A 17 kW / 22.5hp / 32A 22.5 kW / 30hp / 40A 25 kW / 34hp / 45A 26 kW / 35hp / 50A 30 kW / 40hp / 63A 37 kW / 50hp / 70A

13.5A 16A 20A 24A 24A 28.5A 43A

15 kVAr 20 kVAr 20 kVAr 30 kVAr 30 kVAr 35 kVAr 40 kVAr

1400A 2000A 2000A 2450A 2450A 2650A 3000A
25A 32A 40A 45A 50A 63A 80A
25A 32A 40A 45A 50A 63A 80A
25A 32A 40A 45A 50A 63A 80A
25A 32A 40A 45A 50A 63A 80A
25A 32A 40A 45A 50A 63A 80A
12A 20A 25A 45A 50A 50A 63A
10 x 106 10 x 106 10 x 106 10 x 106 10 x 106 10 x 106 10 x 106
7200 7200 3600 3600 3600 3600 3600
3000 3000 3000 3000 3000 3000 3000
750 750 750 750 750 750 750
750 750 750 750 750 750 750
300 300 300 300 300 300 300
0 0 0 0 0 0 0 0 0 0 0 0 0 0
-20 C to +55 C -20 C to +55 C -20 C to +55 C -20 C to +55 C -20 C to +55 C -20 C to +55 C -20 C to +55 C
1 x 10 1 x 10 1 x 10 1 x 35 1 x 35 1 x 35 1 x 35
- - - 1 x 12.5 mm x 3 mm 1 x 12.5 mm x 3 mm 1 x 12.5 mm x 3 mm 2 x 12.5 mm x 3 mm
2x6 2x6 2x6 - - - -
2x4 2x4 2x4 - - - -

# # # 2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC
10A 10A 10A 10A 10A 10A 10A
4A 4A 4A 4A 4A 4A 4A
2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5

24, 42, 110, 24, 42, 110, 24, 42, 110, 24, 42, 110, 24, 42, 110, 24, 42, 110, 24, 42, 110,
220, 240, 415, 525 220, 240, 415, 525 220, 240, 415, 525 220, 240, 415, 525 220, 240, 415, 525 220, 240, 415, 525 220, 240, 415, 525
68 68 68 190 190 190 190
0.82 0.82 0.82 0.77 0.77 0.77 0.77
11 11 11 21 21 21 21
4 4 4 5.5 5.5 5.5 5.5
65 - 120 65 - 120 80 - 110 80 - 110 80 - 110 80 - 110 80 - 110
35 - 50 35 - 50 35 - 65 35 - 65 35 - 65 35 - 65 35 - 65
83 x 45 x 88 83 x 45 x 88 83 x 45 x 88 109 x 89 x 120.5 109 x 89 x 120.5 109 x 89 x 120.5 109 x 89 x 120.5

MNX 3 Pole Power Contactors

25 Technical Details

Range from 9-650A AC3

l

Coil on top design 95A and above

l
Built-in 2 NO + 2 NC auxiliary
l

contacts for 45A & above

Entire range is UL listed
l

MNX 95 MNX 110 MNX 140 MNX 185

Catalogue No. CS 94136 CS 94137 CS 94138 CS 94139
Conformance to standards
Power Contacts
No. of poles 3 3 3 3
Rated insulation voltage, Ui 1000V 1000V 1000V 1000V
Rated impulse withstand voltage, Uimp 8 kV 8 kV 8 kV 8 kV
Rated making capacity - (Amp) 1680 1680 1800 2220
Rated breaking capacity - (Amp) 1400 1400 1600 1850
Utilization category AC-1 160A 160A 160A 250A
Rated operational current,
Utilization category AC-2 95A 110A 140A 185A
I e At 550C
Motor duty : 3, 415V, 50Hz Utilization category AC-3 45 kW / 60hp / 95A 55 kW / 75hp / 110A 75 kW / 100hp / 140A 90 kW / 120hp / 185A
Utilization category AC-4 45 kW / 60hp / 95A 55 kW / 75hp / 110A 75 kW / 100hp / 140A 90 kW / 120hp / 160A
Operational current Ie for AC-4 Utilization category
53A 58A 66A 90A
at 415V, 3, 50Hz for 2,00,000 operating cycles
Capacitor switching delta connected: 415V, 50Hz *** 65 kVAr 65 kVAr 70 kVAr 100 kVAr
Max. Permissible peak in-rush current, Ip for capacitor switching 3500A 3500A 4000A 4500A
DC 1 - 110V 95A 110A 140A 185A
DC 1 - 220V 95A 110A 140A 185A
DC ratings
DC 3 - 110V 95A 110A 140A 185A
(with 3 poles in series)
DC 3 - 220V 95A 110A 140A 185A
and AC coil operation
DC 5 - 110V 95A 110A 140A 185A
DC 5 - 220V 95A 110A 125A 185A
Mechanical life, No. of operating cycles 10 x 106 10 x 106 10 x 106 10 x 106
Mechanical 3600 3600 3600 3600
Max. frequency of Utilization Category AC-1 3000 3000 3000 3000
operations: Utilization Category AC-2 750 750 750 750
Operating cycles/hr Utilization Category AC-3 750 750 750 750
Utilization Category AC-4 300 300 300 250
Service temperature -200C to +550C -200C to +550C -200C to +550C -200C to +550C
Lug (mm2) 1 x 120 1 x 120 1 x 120 1 x 185
Link (mm2) 2 x 25 mm x 3 mm 2 x 25 mm x 3 mm 2 x 25 mm x 3 mm 2 x 30 mm x 5 mm
Main terminal capacity
Solid Conductors (mm2) - - - -
Multi strand conductors (mm2) - - - -
Auxiliary Contacts
No. of built-in auxiliary contacts 2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC
Conventional thermal current, Ith at 550C 10A 10A 10A 10A
AC-15 rating at 415V, 50Hz 4A 4A 4A 4A
Terminal capacity (Solid or multi strand conductors (mm2) 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5
Coil

Voltage available for 50Hz Uc (V) 24, 42, 110, 24, 42, 110, 24, 42, 110, 110, 220,
220, 240, 415, 525 220, 240, 415, 525 220, 240, 415, 525 240, 415, 525
VA 550 550 550 960
Pick-up
Cos 0.64 0.64 0.64 0.3
VA 36 36 36 56
Hold-on
Watts 10 10 10 16
Pick-up (%Uc) 80 - 110 80 - 110 80 - 110 80 - 110
Limits of operation
Drop-off (%Uc) 35 - 65 35 - 65 35 - 65 35 - 65
Overall dimensions H x W x D in mm 175 x 137 x 152 175 x 137 x 152 175 x 137 x 152 208.2 x 147 x 181
** Data Available on request *** For Capacitor Switching, please connect inductor in series 60Hz & 50/60Hz Coils available on request
 26

MNX 225 MNX 265 MNX 325 MNX 400 MNX 550 MNX 650
CS 94140 CS 94142 CS 94143 CS 94144 CS 94145 CS 96327
IS/IEC 60947-4-1 & IEC 60947-4-1, BSEN 60947-4-1

3 3 3 3 3 3
1000V 1000V 1000V 1000V 1000V 1000V
8 kV 8 kV 8 kV 8 kV 8 kV 8 kV
2400 4000 4500 4500 5500 6500A
2000 3200 4000 4000 4500 5200A
300A 350A 400A 425A 650A 800A
225A 265A 325A 400A 550A 650A
110 kW / 150hp / 225A 147 kW / 196hp / 265A 180 kW / 245hp / 325A 200 kW / 270hp / 400A 315 kW / 425hp / 550A 355 kW / 475hp / 650A
100 kW / 136hp / 200A 130 kW / 175hp / 235A 140 kW / 190hp / 250A 150 kW / 200hp / 275A 168 kW / 225hp / 300A 200 kW / 267hp / 400A

100A 120A 140A 150A 150A **

125 kVAr 150 kVAr 175 kVAr 175 kVAr 250 kVAr 300 kVAr
5400A 6100A 7000A 7000A ** **
225A 265A 325A 400A 550A 650A
225A 265A 325A 400A 550A 650A
225A 265A 325A 400A 550A 650A
225A 265A 325A 400A 550A 650A
225A 265A 325A 400A 550A 650A
225A 265A 325A 400A 550A 650A
10 x 106 10 x 106 10 x 106 10 x 106 10 x 106 10 x 106
3600 3600 3600 3600 1200 1200
3000 3000 3000 3000 750 750
750 750 750 750 750 750
750 750 750 750 750 750
150 150 150 150 150 150
0 0 0 0 0 0 0 0 0 0 0 0
-20 C to +55 C -20 C to +55 C -20 C to +55 C -20 C to +55 C -20 C to +55 C -20 C to +55 C
1 x 185 2 x 240 / 1 x 300 2 x 240 / 1 x 300 2 x 240 / 1 x 300 2 x 50 mm x 5 mm -
2 x 30 mm x 5 mm 2 x 50 mm x 5 mm 2 x 50 mm x 5 mm 2 x 50 mm x 5 mm 2 x 50 mm x 5 mm 2 x 60 mm x 5 mm
- - - - - -
- - - - - -

2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC
10A 10A 10A 10A 10A 10A
4A 4A 4A 4A 4A 4A
2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5

110, 220 110, 220 110, 220 110, 220 110, 220 110, 220
240, 415, 525 240, 415, 525 240, 415, 525 240, 415, 525 240, 415 240, 415
960 2100 2100 2100 1000 1000
0.3 0.21 0.21 0.21 - -
56 95 95 95 25 25
16 35 35 35 10 10
80 - 110 80 - 110 80 - 110 80 - 110 80 - 110 80 - 110
35 - 65 35 - 65 35 - 65 35 - 65 35 - 65 35 - 65
208.2 x 147 x 181 275 x 200 x 220 275 x 200 x 220 275 x 200 x 220 275 x 200 x 220 296 x 200 x 220

MNX 3 Pole Power Contactors

27 Ordering Information

Accessories for MNX

Add-on Blocks Mechanical Interlock Kits

MNX / MCX MNX / MCX MNX M1 MNX M7 MNX M8

Top Add-on Block Side Add-on Blocks (MNX 9-40) (MNX 185-225) (MNX 265-650)

Surge Suppressors

MNX S1 MNX S3 MNX S4

Spares for MNX

MNX Spare Kits MNX Spare Coils

Auxiliary Add on Block Mechanical Surge

Contactor Type Spare Coil Spare kit
Mounting Configuration Cat. No. Interlock Kit Suppressor

MNX 9 4 NO CS94112 MNX 9 CS94123

3 NO + 1 NC CS94113
MNX 12 2 NO + 2 NC CS94114 MNX 12 CS94124

MNX 18 1 NO + 3 NC CS94115 MNX 18 CS94125

4 NC CS94116
MNX 22 Top MNX 22 CS94269
2 NO CS94117
CS94126 CS94166 CS94105
1 NO + 1 NC CS94118
MNX 25 MNX 25 CS94127
2 NC CS94119
1 NO CS94120
MNX 32 MNX 32 CS94128
1 NC CS94121
First Left 1 NO + 1 NC CS94220
MNX 40 MNX 40 CS94147
First Right 1 NO + 1 NC CS94221
MNX 45 First Left 1 NO + 1 NC CS94201 MNX 45 CS94149
MNX 50 First Right 1 NO + 1 NC CS94202 MNX 50 CS94150
CS94197 CS94163 CS94192
MNX 70 Second Left 1 NO + 1 NC CS94203 MNX 70 CS94151
MNX 80 Second Right 1 NO + 1 NC CS94204 MNX 80 CS94152
MNX 95 MNX 95 CS94153
MNX 110 CS94198 CS94196 MNX 110 CS94154
CS94164
MNX 140 MNX 140 CS94155
MNX 185 First Left 1 NO + 1 NC CS94205 MNX 185 CS94156
CS94199 CS94194
MNX 225 First Right 1 NO + 1 NC CS94206 MNX 225 CS94157
MNX 265 Second Left 1 NO + 1 NC CS94207 MNX 265 CS94159
MNX 325 Second Right 1 NO + 1 NC CS94208 CS94195 MNX 325 CS94160
MNX 400 CS94200 CS94165 MNX 400 CS94161
MNX 550 MNX 550 CS94162
CS94193
MNX 650 MNX 650 CS96336
Add 4 digit suffix as per required coil voltage given below.

Ordering Suffix for Coil Voltages

Std Coil voltage at 50Hz 24 42 48 110 220 240 360 380 415 440 525
Ordering Suffix GOOO JOOO HOOO AOOO KOOO BOOO COOO LOOO DOOO POOO MOOO
Electrical Life Curves 28

Utilisation Category AC-1

MNX185
MNX140

MNX265

MNX325
MNX400

MNX650
MNX225

MNX550
MNX110
MNX12

MNX25

MNX32

MNX45

MNX70

MNX80

MNX95
MNX40

MNX50
MNX18

MNX22
MNX9
7
10
9
8
7
6
5
4

3
No. of Operating Cycles

6
10
9
8
7
6
5
4

5
10
5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9
1 10 100 1000

Operational Current, le in Amperes

Utilisation Category AC-2

MNX140

MNX185

MNX225
MNX265
MNX325
MNX400
MNX550
MNX650
MNX110
MNX12

MNX18

MNX22
MNX25

MNX32
MNX40
MNX45
MNX50
MNX70

MNX80
MNX95
MNX9

7
10
9
8
7
6
5
4

3
No. of Operating Cycles

6
10
9
8
7
6
5
4

5
10
5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9
1 10 100 1000

Operational Current, le in Amperes

MNX 3 Pole Power Contactors

29 Electrical Life Curves

Utilisation Category AC-3

MNX140
MNX185
MNX225
MNX265
MNX325

MNX400

MNX550
MNX650
MNX110
MNX12

MNX18

MNX22
MNX25

MNX32

MNX40

MNX45

MNX50
MNX70

MNX80
MNX95
MNX9
7
10
9
8
7
6
5
4

3
No. of Operating Cycles

6
10
9
8
7
6
5
4

5
10
5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9
1 10 100 1000

Operational Current, le in Amperes

Utilisation Category AC-4

MNX110
MNX45

MNX80

MNX140

MNX185
MNX225

MNX265
MNX325
MNX400

MNX550
MNX650
MNX32

MNX40

MNX50

MNX70

MNX95
MNX12

MNX18

MNX22

MNX25
MNX9

107
9
8
7
6
5
4

6
109
8
No. of Operating Cycles

7
6
5
4

5
109
8
7
6
5
4

4
10
5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9
1 10 100 1000

Operational Current, le in Amperes

Overall Dimensions 30

3 Pole Power Contactors - Type MNX

14.5 14.5

Frame-I 10.8 10.8 10.8

Frame-II

88

88

95.8
95.8
66

66
34

34
81 35 8

8
83 45

81 35
45
84.8
70
65
60 70
65
60

MNX 9 M4 x 11.5 MNX 25

M3.5 x 9
MNX 12 Screws
Cross-
Screws M3.5 x 9 MNX 32
Mounting Holes MNX 18 Screws
to Suit M4 Screws
Mounting Holes
MNX 40
MNX 22 to Suit M4 Screws

Frame-III Frame-IV
Terminal Screws Note:
M5 for MNX 45 / 50 Dimensions of Contactors
M6 for MNX 70 / 80 not Suitable for DIN rail Mounting Screw - M8 x 25
120.5

152
Contactors Dia A
A

MNX 45/50 83
61.5
18

220V
50HZ MNX 70/80 83.5
50HZ
220V
136
13 175
ON

NK
04
I0

Mounting Holes
1L 1 3L 2 5L 3 175 for M5 Screws
85 Mounting

6T3
5L3
109

50HZ
220V
96

A1

137 (2NO + 2NC)

161 (4NO + 4NC)

45

MNX 45
4T2
3L2
120

2T1 4T2 6T3

45

2T1A2
1L1
NK
I0
04
ON

50HZ
220V

30 30
MNX 95
60 Mounting
89, (2NO + 2NC) MNX 45 / 50
112, (4NO + 4NC) 115 MNX 110
Mounting Holes for M5 Screws MNX 70 / 80 156
Printed text of Add-on Blocks &
Top Cover should be Upright
when Oblong Mounting Holes on
Rear Housing are at Bottom MNX 140

Frame-V Frame-VI
50Hz
220V

Screw
M10 x 30
50HZ
240V M12 x 40
220
132-coil Terminal Level
181

F
4

E
60 - No Level
37- No Level

15
76

208
MNX 265, MNX 325
20
16

12 Mounting Holes
for - M8 Screws
208.2
183.2
MNX 400, MNX 550
MNX 650
71
72
83

84

MNX400

225 (4NO + 4NC)

31

200 (2NO + 2NC)

43

32

44

MNX 265/325/
25

Contactor MNX 650

5L2

6L2
50HZ

175
240V

400/550
147 (for 2NO + 2NC)

171 (for 4NO = 4NC)

135 - Mounting
49

A 241 259
C
3L2

4L2

B 275 296
D

C 62.5 74
49

MNX 185
1L1

2T2

D 35 40
50HZ
240V

170 E 55 56
MNX 225
61 21
62 22
54 14
53 13

114 A F 5 6
B
125 Mounting Mounting Holes for M6 Screw
All dimensions in mm.

MNX 3 Pole Power Contactors

MDX DC Coil 3 Pole
Power Contactors

MDX Power Contactors cater to all those applications where DC control supply is used. The range is available
from 9A-110A AC-3 and the major applications are battery chargers, traction systems, UPS systems etc. Many
critical installations like power generation equipment, crane terminals, hospital equipment also incorporate DC
Coil contactors.
Efficient switching now with
DC control
43 Technical Details

Type Designation MDX 9 MDX 12 MDX 18 MDX 25

Catalogue no. CS96564 / 48* CS96565 / 49* CS96566 / 50* CS96567 / 51*
Conformance to Standards
Power Contacts
No. of poles 3 3 3 3
Rated insulation voltage Ui V 690 690 690 690
Rated impulse withstand voltage Uimp kV 6 6 6 6
Conventional free air
Operational current 0
A 25 28 32 32
thermal current Ith ( 40 C)
Motor duty: 3, 415V, 50Hz
Utilization category AC-3 ( 550C) A / kW 9A / 4.5 kW 12A / 6.2 kW 18A / 9 kW 25A / 13.4 kW
Rated making capacity A 90 120 180 250
Rated breaking capacity ( 440V) A 72 96 144 200
Operation current Ie for AC-4 Utilization category
A 4.9 7.9 8.5 10
at 415V, 3, 50Hz for 200000 operating cycles
DC 1 - 110V A 15 16 16 18
DC 1 - 220V A 10 11 11 12
DC ratings DC 3 - 110V A 11 12 12 15
(with 3 poles in series) DC 3 - 220V A 5 6 6 8
DC 5 - 110V A 11 12 12 15
DC 5 - 220V A 5 6 6 8
Mechanical life (million) Cycles 20 20 20 20
Electrical life at 415V, AC-3 Utilization category (million) Cycles 2 2 1.6 1.2
Max. frequency of operations Mechanical cy/hr 3600 3600 3600 3600
0
Service temperature C
Maximum altitude m
Flexible w/o lug mm
2
1-6 1-6 1-6 1-6
Terminal capacity
Flexible c/w lug mm2 1-4 1-4 1-4 1-4
Auxliary Contacts
No. of in built auxiliary contacts 1 NO / 1 NC 1 NO / 1N C 1 NO / 1 NC 1 NO / 1 NC
0
Conventional thermal current Ith at 55 C A 10 10 10 10
Flexible w/o lug mm
2
1-6 1-6 1-6 1-6
Terminal capacity
Flexible c/w lug mm2 6 6 6 6
Coil Characteristics
Coil voltage available VDC
Average hold on coil consumption Watts 5.4 5.4 5.4 5.4
Pick-up % Uc 70 - 125 70 - 125 70 - 125 70 - 125
Limits of operation
Drop-off % Uc 10 - 40 10 - 40 10 - 40 10 - 40
Height mm 81 81 81 81
Width mm 45 45 45 45
Overall dimensions
Depth mm 98.5 98.5 98.5 98.5
Weight Kg 0.47 0.47 0.47 0.47

* With 1 NC auxiliary contact.

# Add on Block can be ordered separately.
 44

MDX 32 MDX 38 MDX 50 MDX 65 MDX 80 MDX 95 MDX 110

CS96552 CS96553 CS96554 CS96555 CS96556 CS96557 CS96558
IS/IEC 60947-4-1 & IEC 60947-4-1

3 3 3 3 3 3 3
690 690 1000 1000 1000 1000 1000
6 6 8 8 8 8 8

56 56 90 110 125 125 125

32A / 17 kW 38A / 18.5 kW 50A / 27.2 kW 65A / 36 kW 80A / 46 kW 95A / 55 kW 110A / 66 kW

320 380 800 1090 1200 1200 1200
256 304 800 1090 1200 1200 1200

13.5 15.5 28 31 38 43 43

27 34 55 60 85 85 85
16 26 45 50 55 55 55
20 23 30 35 60 60 60
12 15 20 25 35 35 35
20 23 30 35 60 60 60
12 15 20 25 35 35 35
20 20 15 15 15 15 15
1.6 1.4 1.5 1.4 1.3 1.2 0.8
3600 3600 3600 3600 3600 3600 3600
o o
(-50 C to +70 C)
3000
2. 5 - 16 2.5 - 16 4 - 50 4 - 50 6 - 50 6 - 50 6 - 50
1 - 10 1 - 10 4 - 50 4 - 50 6 - 50 6 - 50 6 - 50

# # # # # # #
10 10 10 10 10 10 10
2.5 2.5 2.5 2.5 2.5 2.5 2.5
2.5 2.5 2.5 2.5 2.5 2.5 2.5

24 / 48 / 110 / 220
5.4 5.4 15 15 15 15 15
70 - 125 70 - 125 80 - 110 80 - 110 80 - 110 80 - 110 80 - 110
10 - 40 10 - 40 10 - 25 10 - 25 10 - 25 10 - 25 10 - 25
90 90 124 124 124 124 124
45 45 75 75 75 75 75
107.5 107.5 150.5 150.5 150.5 150.5 150.5
0.54 0.54 1.69 1.69 1.73 1.73 1.73

MDX DC Coil 3 Pole Power Contactors

45 Ordering Information

DC Contactors

Ith Ie (AC-3) at
440V Motor Rating at 50 Hz In Built Auxiliary
Product Contacts
Terminal Type Cat. No.*
Type 40oC
55oC
230V 415V 440V 690V
(A) (A) (kW) (kW) (kW) (kW) NO/NC
1 NO CS96564
MDX 9 25 9 2.2 4.5 4.8 7.5 Clamp-Screw
1 NC CS96548
1 NO CS96565
MDX 12 28 12 3.2 6.2 6.2 10 Clamp-Screw
1 NC CS96549
1 NO CS96566
MDX 18 32 18 4 9 9 10 Clamp-Screw
1 NC CS96550
1 NO CS96567
MDX 25 32 25 7 13.4 13.4 11 Clamp-Screw
1 NC CS96551
MDX 32 56 32 8.3 17 17 22 Clamp-Screw - CS96552
MDX 38 56 38 11 18.5 18.5 22 Clamp-Screw - CS96553
MDX 50 90 50 14.3 27.2 27.2 43.5 Clamp-Screw - CS96554
MDX 65 110 65 18.5 36 36 59.7 Lug-clamp - CS96555
MDX 80 125 80 23 46 46 74 Lug-clamp - CS96556
MDX 95 125 95 27.6 55 55 74 Lug-clamp - CS96557
MDX 110 125 110 33 66 70 80 Lug-clamp - CS96558
* Please add coil suffix as per required coil voltage.

Accessories

Add on Block Surge Suppressor

Add on Blocks
Ith
For Contactor Mounting Contact Combinations Cat. No.
(A)
MDX 9 - 110 Top 10 1 NO + 1 NC CS96568OOOO
MDX 9 - 110 Top 10 2 NO + 2 NC CS96569OOOO
MDX 9 - 110 Side 10 1 NO + 1 NC ST94985OOOO
MDX 50 - 110 Top 10 1 NO / 1 NC reversible CS96586OOOO

Surge Suppressors Mechanical Interlock kit

For Contactor Cat. No. For contactor Cat. No.

MDX 50 - 110 CS96571OOOO MDX 9 - 38 CS96572OOOO

MDX 50 - 110 CS96573OOOO

Note: Inbuilt surge suppressor for MDX 9 - 38

Ordering Suffix for Coil Voltages

Coil Voltage VDC 24 48 110 220
Suffix 4OOO 5OOO 1OOO 2OOO
 Million Cycles

0.5
5

0.3
3
10

0.2
2

0.1
1
2

MDX 9
3

MDX 12
5
MDX 18
6
MDX 25

9
10
MDX 32
12
MDX 38
Electrical Life Curves

18 MDX 50
20
MDX 65
26 25
MDX 80
30 MDX 95
32
MDX 110
38
50 50

65

Rated AC-3 Current

80
95
100
110

200

300

400
500
600

1000
[A]

MDX DC Coil 3 Pole Power Contactors

46
47 Wiring Diagrams

MDX 9 - 25 (with 1 NO) MDX 9 - 25 (with 1 NC)

L1 L2 L3 L1 L2 L3
A1 1 3 5 13 A1 1 3 5 21

A2 2 4 6 14 A2 2 4 6 22
T1 T2 T3 T1 T2 T3

MDX 32 - 38 MDX 50 - 110

L1 L2 L3 L1 L2 L3
A1 1 3 5 A1 1 3 5

A2 2 4 6 A2 2 4 6
T1 T2 T3 T1 T2 T3

MDX 11E Top add on MDX 22E Top add on MDX 11E Side add on
NC
ON
53 61 53 61 71 83 114 122

93 01

54 62 54 62 72 84 94 02
113 121

ON NC

MDX Top add On 1 NO / 1 NC reversible (MDX 50 - 110)

02 03 04 01 04 01 02 03
91 94 93 92 93 92 91 94

92 93 94 91 94 91 92 93
01 04 03 02 03 02 01 04
Overall Dimensions 48

45 MDX 9 - 25
(1.77)
10.9
(0.43) 98.5
(3.88)

(0 4.2
6.2

)
.1 7

(0.24)

(2.79)

(3.19)
71

81
35
(1.38)

45
(1.77) MDX 32 - 38
14.6 107.5
(0.57) (4.23)
7.9
(0 4.2
)
.17

(0.31)

(5.31)

(3.15)

(3.54)
134.8

80

90

35
(1.38)

75
MDX 50 - 110
(2.95)
150.5
23.5 (5.92)
14
)
(0 6

(0.92)
.24

(0.55)
(7.16)

(4.41)

(4.88)
182

124
112

55
(2.16)

MDX DC Coil 3 Pole Power Contactors

ML 3 Pole
Power Contactors

ML Power Contactors are suitable for applications involving harsh environments. They are used in motor feeder
applications in steel industries, material handling plants etc. The series includes a wide range from 25A to 300A
(AC-3) and are complemented by ML Thermal Overload Relays.
Tap the tough solution
51 Technical Details

Conforms to IS/IEC 60947-4-1, IEC 60947-4-1

l

Range from 25A - 300A AC-3

l

Rugged and designed for harsh operating conditions

l

Type ML 1.5 ML 2
Cat. no. SS91851 SS90701
Conformance Standards
No. of poles 3 3
Thermal rating / Utilization category AC-1 : 3 , 415V, 50Hz 25A 40A
Insulation voltage, Ui (V) 500 500
Utilization Category AC-2 25A 32A
Motor duty 3, 415V, 50Hz Utilization Category AC-3 11 kW / 15 hp / 25A 15 kW / 20 hp / 32A
Utilization Category AC-4 9 kW / 12.5 hp / 21A 15 kW / 20 hp / 32A
Operational Current le (AC-4 Utilization Category)
13.5A 17A
For contact life of 300000 Operating cycles
20% 37A 48A
I) Stator duty - 415V, 50Hz
40% 37A 48A
Duty factor (10 min. cycle duration)
60% 30A 40A
20% 56A 72A
Il) Rotor duty - Delta connected
40% 56A 72A
Duty factor (10 min. cycle duration)
60% 44A 60A
Starting 830V 830V
lll) Max. Rotor Voltage
Plugging 415V 415V
(10 min. cycle duration)
Speed control 500V 500V
Capacitor Switching - Delta connected, 415V, 50Hz *** Single Capacitor 13 kVAr 20 kVAr
Making Capacity at 457V, Cos - 0.35, 50Hz 252A 400A
Breaking Capacity at 457V, Cos - 0.35, 50Hz 210A 320A
DC 1 - 110V 25A 32A
DC 1 - 220V 25A 32A
DC rating (with 3 poles in series) and DC 3 - 110V 25A 32A
AC coil operation DC 3 - 220V 10A 32A
DC 5 - 110V 25A 32A
DC 5 - 220V 7.5A 32A
Mechanical life : No of operating cycles 15 x 106 10 x 106
Mechanical 3000 2000
Utilization Category AC-1 3000 750
Max. Frequency of operation :
Utilization Category AC-2 750 750
Operating cycles/hr
Utilization Category AC-3 750 750
Utilization Category AC-4 250 250
0 0
Service temperature -20 C to + 55 C -200C to + 550C
Wires up to (in mm)2 2 x 10 2 x 25
Main terminal capacity 2
Lugs up to (in mm) 16 50
Auxiliary Contacts
No. of built in auxiliary contacts 2 NO + 2 NC 2 NO + 2 NC
Operating Sequence
Thermal Rating at 415V, 50Hz 16A 16A
Aux. Terminal Capacity : Wires up to (in mm)2 2 x 2.5 2 x 2.5
AC-15 Rating at 415V, 50Hz 4A 4A
Making Capacity at 415V, Cos - 0.35, 50Hz 80A 80A
Breaking Capacity at 415V, Cos - 0.35 , 50Hz 70A 70A
Coil
24, 42, 110, 220, 240, 42, 110,
Voltages Available for 50Hz operation, Uc (V)
360, 380, 415, 440, 525 60, 380,
VA 60 120
Pick-up
Cos 0.8 0.4
VA 15 20
Hold-on Watts 5 8.5
Pick-up (% Uc) 75 - 110 75 - 110
Limits of operation
Drop-off (% Uc) 65 - 15 65 - 15
Typical closing delay in msec 5 - 35 10 - 35
Typical opening delay in msec 5 - 20 5 - 25
Weight (unpacked) in kg. 0.5 0.95
 52

ML 3 ML 4 ML 6 ML 10 ML 12
SS90721 SS90910 SS90921 SS90935 SS91010
IS/IEC 60947-4-1, IEC 60947-4-1
3 3 3 3 3
45A 100A 125A 250A 400A
500 660 660 660 660
40A 70A 110A 200A 300A
22 kW / 30 hp /40A 37 kW / 50 hp / 70A 55 kW / 75 hp / 110A 110 kW / 150 hp / 200A 168 kW / 225 hp / 300A
22 kW / 30 hp / 40A 37 kW / 50 hp / 70A 45 kW / 60 hp / 85A 110 kW / 150 hp / 200A 140 kW / 190 hp / 250A

22A 35A 46A 90A 112A

60A 95A 165A 250A 375A

60A 95A 165A 250A 375A
50A 78A 135A 206A 310A
90A 157A 270A 370A 560A
90A 157A 270A 370A 560A
75A 118A 206A 310A 465A
830V 830V 830V 830V 830V
415V 415V 415V 415V 415V
500V 500V 500V 500V 500V
20 kVAr 50 kVAr 65 kVAr 125 kVAr 175 kVAr
480A 840A 1200A 2500A 3000A
400A 700A 1000A 2000A 2500A
40A 63A 85A 200A 300A
40A 63A 85A 200A 300A
40A 63A 85A 200A 300A
40A 63A 63A 200A 300A
40A 63A 85A 200A 300A
40A 63A 63A 200A 300A
10 x 106 10 x 106 10 x 106 10 x 106 10 x 106
2000 1200 1200 1200 1200
750 1000 750 750 750
750 500 500 500 500
750 750 750 500 500
250 250 250 250 250
-200C to + 550C
0 0 0 0
-200C to + 550C
0 0
-20 C to + 55 C -20 C to + 55 C -20 C to + 55 C
2 x 25 - - - -
50 50 95 240 240

2 NO + 2 NC 2 NO + 2 NC** 2 NO + 2 NC** 2 NO + 2 NC* 2 NO + 2 NC*

Break Before Make
16A 16A 16A 16A 16A
2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5
4A 4A 4A 4A 4A
80A 80A 80A 80A 80A
70A 70A 70A 70A 70A

220, 240 110, 220 110, 220, 240

415, 440, 525 240, 415, 525 380, 415, 525
120 450 450 1450 1450
0.4 0.3 0.3 0.25 0.25
20 50 50 85 85
8.5 17 17 27 27
75 - 110 75 - 110 75 - 110 75 - 110 75 - 110
65 - 15 65 - 15 65 - 15 65 - 15 65 - 15
10 - 35 10 - 35 10 - 35 15 - 45 15 - 45
5 - 25 10 - 40 10 - 40 5 - 25 5 - 25
0.95 2.9 3 9.0 9.2

ML 3 Pole Power Contactors

53 ML Thermal Overload Relay

Type ML 1.5 ML 2/3

Cat. no. SS91858 SS91859
Conformance Standards IS/IEC 60947-4-1, IEC 60947-4-1
Rated insulation voltage (Ui) V 500 500
Rated impluse strength (Uimp) 6 6
0
Service temperature C -5 to + 55 -5 to + 55

Rated thermal current lth

A 6 6
at 415V, 50Hz

24V 6 6
110V 5 5
Rated operational current for AC-15
utilization category at 50Hz (A) 220V 3 3
380 / 415V 2 2
500V 2 2

1 Start 1 Start
Built in contacts 1 Off / Reset 1 Off / Reset

1 Alarm (NO) 1 Alarm (NO)

Tripping class (A) 10 10

Max. Frequency of operation Op. cycles / hr 30 30
2
Main Terminal capacity Lug (mm ) 16 50
2
Aux. Terminal capacity Wires (mm ) 2 x 2.5 2 x 2.5
I-T Characteristics 54

3 Pole Balanced Loading Condition

ML 1 (upto 6-10 Amps) ML 1 (upto 10-16 Amps)

7.2 7.2
6 6
4 4

2 2

103 103

6 6
Tripping Time in Seconds

Tripping Time in Seconds

4 4

2 2

102 102

6 6
4 4

2 2

101 101

6 6
4 4

2 2

0.8 1 1.2 1.5 2 3 4 5 6 7 8 0.8 1 1.2 1.5 2 3 4 5 6 7 8

Multiples of set current Multiples of set current

ML 2 / 3
7.2
6
4

103

6
Tripping Time in Seconds

102

6
4

101

6
4

0.8 1 1.2 1.5 2 3 4 5 6 7 8

Multiples of set current

ML 3 Pole Power Contactors

55 Ordering Information

ML Relays

Type Range (A) Cat. No.

0.15 - 0.25 SS91858OODO
0.25 - 0.4 SS91858OOFO
0.4 - 0.65 SS91858OOHO
0.6 - 1 SS91858OOKO
ML 0
1 - 1.6 SS91858OOMO
ML 1
1.5 - 2.5 SS91858OOPO
ML 1.5
2.5 - 4 SS91858OORO
4 - 6.5 SS91858OOTO
6 - 10 SS91858OOVO
10 - 16 SS91858OOBO
9 - 14 SS91859OOAO
ML 2 13 - 21 SS91859OOCO
ML 3 20 - 32 SS91859OOEO
28 - 42 SS91859OOFO

Accessories & Spares

Contactor Type Aux. Add on Block Spare Coil* Spare Kit Housing & Bridge Kit

ML 1.5 Not available SS90873 SS95305 ST28734

ML 2 SS95307
Not available SS90545 ST23866
ML 3 SS95309

ML 4 SS95311
SS91494 SS91258 ST28735
ML 6 SS95313

ML 10 SS95315 -
SS91474 SS91011
ML 12 SS95317 -

* Add 4 digit suffix as per required coil voltage given below.

Ordering Suffix for Coil Voltages

Std Coil voltage at 50Hz 24 42 48 110 220 240 360 380 415 440 525
Ordering Suffix GOOO JOOO HOOO AOOO KOOO BOOO COOO LOOO DOOO POOO MOOO
Overall Dimensions 56

ML 1.5 Contactor (Without shroud) ML 4 Contactor

Fixing Screws
Fixing Screws M6 X 28 - 3 Nos.
M4 X 14 - 3 Nos. 38 38
73 85.5 136 22 min
3.5
54 38
50.7
4.8

124
120

142
44
56
66

24.75 110* 95

24.75 *Provide 12 mm extra for each Add-on block

ML 2 / 3 Contactor ML 6 Contactor
Fixing Screws Fixing Screws
M4 x 14 - 3 Nos. M6 x 28 - 3 Nos.
41.5 41.5 136 22 min
33 33
115 38
19
88

110

134
120

152
33 77
94
110* 95

*Provide 12 mm extra for each Add-on block

ML 10 / 12 Contactor Thermal Overload Relay

ML 0/1/1.5 ML 2/3
2.55 30
17.75 21.7 21.7 29 29 26
12

12
142
61.5

M 10 60 10
137 3 Mounting Holes

30 33 33 18
17.25 24.75 24.75 102
84 39.5
170

81.5
205

176

36.8
20
11
32

41

60 60 5.5
21.5

197
36

170
6

194
62
2 NO + 2 NC ( Basic Version ) 91*.*
49.7
5.5

223 ( 4 NO + 4 NC ) 93.5*

Terminal Screws M4 Terminal Screws M4

All dimensions in mm.

ML 3 Pole Power Contactors

MX Mini Contactors

MX Mini Contactors are designed for panels where panel space is a constraint. The contactors have a compact
design and exhibit reliable performance even in smaller space. The range is suitable for both industrial and
commercial applications for motor loads up to 5.5 kW and electromagnetic loads up to 4A.
Make way for bigger benefits in
smaller footprints
59 Technical Details - MX Power Contactors

Range from 6A - 12A AC3

l

Control contactors available in all NO/NC combinations (4 Pole)

l

Top mounting accessories

l

Available with AC or DC control

l

Built-in surge suppressor with DC control

l

Direct mounting thermal overload relay type MX-R0

l

RoHS Compliant
l

Type Designation for AC / DC Control MX 6 AC / DC MX 9 AC / DC MX 12 AC / DC

Catalogue no. for AC control CS94012 / 3 CS94014 / 5 CS94016 / 7
Catalogue no. for DC control CS94021 / 2 CS94023 / 4 CS94025 / 6
Conformance to standards IS/IEC 60947-4-1, IEC 60947-4-1, EN 60947-4-1
Rated insulation voltage, Ui 690V
Service temperature -50C to +550C
Degree of protection Protection against direct finger contact from front
Tightening torque 0.8 Nm
Power Contacts
No. of main poles 3
Conventional thermal current, lth 20A
Utilization category AC-1 20A
Rated current at 415V, 50Hz
Utilization category AC-3 6A / 3 kW / 4hp 9A / 4 kW / 5.5hp 12A / 5.5 kW / 7.5hp
Making capacity at 415V, 50Hz 10 Ie (AC - 3) A
Breaking capacity at 415V, 50Hz 8 Ie (AC - 3) A
Short-circuit protection gG fuse at 415V, 50Hz 20A
Electrical durability (AC-3) in million 1 0.8 0.6
Utilization category AC-1 3000 Opn / hr
Frequency of operation at Uc
Utilization category AC-3 750 Opn / hr
Solid conductors 2 x 2.5 mm2
Main terminal capacity
Multi-stranded conductors 2 x 2.5 mm2
Auxiliary Contacts
No. of built-in auxiliary contact 1 NO or 1 NC
Conventional thermal current, lth 10A
Rated current at 415V, 50Hz Utilization category AC-15 4A
Short-circuit protection gG fuse at 415V, 50Hz 10A
Electrical durability (AC-15) at 415V, 50Hz in million 1.5
Minimum non-overlapping distance 0.5 mm
Maximum frequency of operation at Uc (AC-15) 1000 Opn / hr
Solid conductors 2 x 2.5 mm2
Auxiliary terminal capacity
Multi-stranded conductors 2 x 2.5 mm2
415V 69.30 m
Maximum Permissible control cable length for drop-off* 240V 207.21 m
110V 986.37 m
CS94012 / 14 / 16 / 21 / 23 / 25 are 3 Main + 1NO auxiliary contact
CS94013 / 15 / 17 / 22 / 24 / 26 are 3 Main + 1NC auxiliary contact
*Cable Capacitance assumed to be 0.2 microfarad/km
Technical Details - MX0 Control Contactors 60

Technical Data
Type Designation for AC / DC Control MX 0 AC / DC
Catalogue no. for AC control CS94018 CS94019 CS94020 CS94041 CS94042
Catalogue no. for DC control CS94027 CS94028 CS94029 CS94043 CS94044
Contact combination 40E 31E 22E 13E 04E
Conformance to standards IS/IEC 60947-5-1, IEC 60947-5-1, EN 60947-5-1
Rated insulation voltage, Ui 690V
Service temperature -5 C to +550C
0

Degree of protection Protection against direct finger contact from front

Tightening torque 0.8 Nm
Contacts
No. of poles 4
Contact details 4NO 3NO+1NC 2NO+2NC 1NO+3NC 4NC
Conventional thermal current, lth 10A
Rated current at 415V, 50Hz Utilisation category AC-15 4A
Short-circuit protection gG fuse at 415V, 50Hz 10A
Electrical durability (AC-15) at 415V, 50Hz in million 1.5
Minimum non-overlapping distance 0.5 mm
Maximum frequency of operation at Uc for AC-15 1000 Opn / hr
2
Solid conductors 2 x 2.5 mm
Terminal capacity 2
Multi-stranded conductors 2 x 2.5 mm
Control Circuit for Power Contactor & Contactor Relay
Coil voltage AC DC
Standard Coil voltage Uc, at 50Hz 24V, 110V, 240V, 415V 24V, 110V, 220V
Pick-up 26VA 2.8VA
Average consumption
4.5VA 2.8VA
at Uc, 50Hz Hold-on
1.2W 2.8W
Pick-up 80 (% Uc) - 110 (% Uc) 80 (% Uc) - 110 (% Uc)
Limits of operation
Drop-off 20 (% Uc) - 65 (% Uc) 10 (% Uc) - 65 (% Uc)
Between coil energisation and:
5 ms...20 ms 5 ms...25 ms
- Opening of NC contacts
10 ms...25 ms 10 ms...30 ms
- Closing of NO contacts
Operating time at Uc, 50Hz
Between coil de-energisation and:
10 ms...25 ms 10 ms...30 ms
- Opening of NO contacts
15 ms...30 ms 15 ms...35 ms
- Closing of NC contacts

Mechanical durability in million 10 10

Maximum frequency of operation at Uc 9000 Opn / hr 9000 Opn / hr
415V 69.30 m
Maximum Permissible control cable length for drop-off* 240V 207.21 m
110V 986.37 m
Note :
1) 5NC and above combinations not recommended for DC control
2) 1NO + 3NC, 4NC add on block combinations are not recommended for DC control
For example, 4NO + 4NC combination can be achieved with 2NO + 2NC auxiliary contactor and 2NO + 2NC add on block and not with 4NO standalone
contactor plus 4NC add on block
3) *Cable capacitance assumed to be 0.2 microfarad/km

MX Mini Contactors
61 Accessories

Auxiliary Contact Blocks

Type Designation MX-A1

Catalogue no. CS94030 CS94031 CS94032 CS94033 CS94034 CS94035 CS94036 CS94037
Contact combination 20E 11E 02E 40E 31E 22E 13E 04E
Conformance to standards IS/IEC 60947-5-1, IEC 60947-5-1, EN 60947-5-1
Rated insulation voltage, Ui 690V
Service temperature -50C to +550C
Degree of protection Protection against direct finger contact from front
Tightening torque 0.8 Nm
Contacts
No. of poles 2 4
Contact details 2NO 1NO+1NC 2NC 4NO 3NO+1NC 2NO+2NC 1NO+3NC 4NC
Conventional thermal current, lth 10A
Rated current at 415V, 50Hz
3A
Utilization category AC-15
Short-circuit protection
10A
gG fuse at 415V, 50Hz
Electrical durability (AC-15) at 415V, 50Hz 1 Million
Minimum overlapping distance 0.5 mm
Maximum frequency of operation
1000 Opn / hr
at Uc for (AC-15)

Terminal Solid conductors 2 mm2 x 2.5 mm2

capacity Multi-stranded conductors 2 mm2 x 2.5 mm2

Mechanical Interlock
Type Designation MX-M1
Catalogue no. CS94038OOOO

Surge Suppressor
Type Designation MX-S1
Catalogue no. CS94039
Suitable coil voltage at 50Hz 24 - 48V; 110 - 240V; 360 - 415V

Ordering Suffix for Coil Voltages

Std Coil voltage at 50Hz 24 42 48 110 220 240 360 380 415 440 525
Ordering Suffix GOOO JOOO HOOO AOOO KOOO BOOO COOO LOOO DOOO POOO MOOO

Coil Voltage VDC 24 48 110 220

Suffix 4OOO 5OOO 1OOO 2OOO
Thermal Overload Relay - Type MX - R0 62

Technical Data
Type Designation MX-R0
Catalogue no. ST94074
Conformance to standards IS/IEC 60947-4-1 & IEC 60947-4-1
Range (A) Ordering Suffix
0.1 - 0.16 OOBO
0.16 - 0.24 OODO
0.22 - 0.33 OOEO
0.3 - 0.45 OOGO
0.45 - 0.67 OOHO
0.67 - 1.0 OOKO
Current range 1.0 - 1.5 OOMO
1.4 - 2.1 OONO
1.8 - 2.7 OOPO
2.4 - 3.6 OOQO
3.5 - 5 OOSO
4-6 OOTO
5.5 - 8.5 OOUO
8.5 - 12.5 OOVO
Rated insulation voltage, Ui 690V
Rated impulse voltage, Uimp 6 kV
Service temperature -50C to +550C
Contacts
24V 6A
110V 5A
Rated operational current for AC-15
220V 3A
utilisation category at 50Hz for
380 / 415V 2A
500V 2A
Tripping class 10
Maximum frequency of operation 30 Opn / hr
Main terminal capacity (Lug) 10 mm2
Auxiliary terminal capacity (Wires) 2 mm2 x 2.5 mm2
Mounting Direct
OFF / Reset 1 OFF and Reset
Built-in contacts 1NO and 1NC

MX Mini Contactors
63 I-T Characteristics

Technical Data
Relay Selection Chart

Range (A) Back-up fuse (HF) (A) Contactor

0.1 - 0.16 2 MX 6
0.16 - 0.24 2 MX 6
0.22 - 0.33 2 MX 6
0.3 - 0.45 2 MX 6
0.45 - 0.67 2 MX 6
0.67 - 1.0 2 MX 6
1.0 - 1.5 2 MX 6
1.4 - 2.1 4 MX 6
1.8 - 2.7 4 MX 6
2.4 - 3.6 4 MX 6
3.5 - 5 6 MX 6
4-6 8 MX 6
5.5 - 8.5 10 MX 9
8.5 - 12.5 16 MX 12

Protection Characteristics

Three-phase
1000

500
400
300
200

100
Tripping time (secs)

50
40
30
20

Single-phase 10

1000 5
4
3 Cold-state curves
500
400 2 Hot-state curves
300
200 1

100
Tripping time (secs)

50 0 1 2 3 4 5 6 7 8 9
40
30
Multiples of the setting currents
20

10

5
4
3
Cold-state curves
2
Hot-state curves
1

0 1 2 3 4 5 6 7 8 9

Multiples of the setting currents

Overall Dimensions 64

Mini Contactors

89.5 with Add on Contact Block & Mechanical Interlock

63.7 with Mechanical Interlock
80.2

54.5
42
28.8
45 45 7
2.1
58
90 with Mechanical Interlock
Surge Suppressor

35 35 Mounting Holes Possibility of Mounting

for M4 Screw TH35-7.5 Rail as per IS : 11039
13.3
32.5
50

64
68

Weight (gm)
Type
AC control DC control
31.8

35

45

Power
Contactor
8.4

180 230
Contactor
Relay
22.8 50 M4

All dimensions in mm.

MX Mini Contactors
MCX 4 Pole
Power Contactors

MCX range of 4 pole contactors is available from 16A to 800A AC-1. The contactors are widely used in conjunction
with auto source transfer controller for transfer of power from mains to backup supply.
The pathway to smoother changeovers
67 Technical Details

Range from 16-800A AC1

l

Wide operating band upto 100A AC1

l

Compact mechanical interlock arrangement upto 80A

l

Type MCX 01 MCX 02 MCX 03

Catalogue no. CS97009 CS97010 CS97011

Conformance to standards

Preferred DG ratings (kVA) 7.5 15 20

Power contacts

No. of poles 4 4 4

Number of built-in auxiliary contacts - - -

Rated insulation voltage, Ui 690V 690V 690V

Rated operational voltage, Ue 415V 415V 415V

Rated impulse withstand voltage, Uimp 8 kV 8 kV 8 kV

Conventional thermal current, lth / Utilisation category AC1 at 400C 16A 25A 32A

Motor Duty : 3 ph, 415V, 50Hz Utilization category AC-3 9A 12A 18A
0 0 0 0
-20 C to 550C
0
Service temperature -20 C to 55 C -20 C to 55 C

With lug (sq mm) 1x6 1x6 1x6

Link - - -
Main terminal capacity
Solid conductor (sq mm) 2x4 2x4 2x4

Multistrand conductors (sq mm) 2 x 2.5 2 x 2.5 2 x 2.5

Auxiliary terminal capacity Solid or multistrand conductors (sq mm) - - -

Coil

Voltage available for 50Hz opn, Uc (V) 110, 220, 240, 415 110, 220, 240, 415 110, 220, 240, 415

Pick-up VA 68 68 68

VA 11 11 11
Hold-on
Watts 4 4 4

Pick-up (%Uc) 55 - 120 55 - 120 55 - 120

Limits of operation
Drop-off (%Uc) 30 - 50 30 - 50 30 - 50

Overall dimensions H x W x D in mm 83 x 45 x 88 83 x 45 x 88 83 x 45 x 88

Mounting dimensions H x W in mm (60 - 65 - 70) x 35 (60 - 65 - 70) x 35 (60 - 65 - 70) x 35

 68

MCX 04 MCX 11 MCX 12 MCX 21 MCX 22 MCX 31

CS97012 CS97013 CS97014 CS97016 CS97017 CS97019

IS/IEC 60947-4-1 & IEC 60947-4-1

25 30 40 50 62.5 82.5

4 4 4 4 4 4

- - - 2NO + 2NC 2NO + 2NC 1NO + 1NC

690V 690V 690V 690V 690V 1000V

415V 415V 415V 415V 415V 415V

8 kV 8 kV 8 kV 8 kV 8 kV 8 kV

40A 50A 63A 80A 100A 130A

22A 25A 35A 45A 65A 80A

0 0 0 0 0 0 0 0 0 0
-20 C to 550C
0
-20 C to 55 C -20 C to 55 C -20 C to 55 C -20 C to 55 C -20 C to 55 C

1x6 1 x 16 1 x 16 1 x 35 1 x 35 1 x 120

- - - 1 x (12.5 mm x 3 mm) 1 x (12.5 mm x 3 mm) 2 x (25 mm x 3 mm)

2x4 2 x 10 2 x 10 - - -

2 x 2.5 2x6 2x6 - - -

- - - - - -

110, 220, 240, 415 110, 220, 240, 415 110, 220, 240, 415 240, 415 240, 415 110, 240, 415

68 180 180 190 190 550

11 22 22 22 22 36

4 5 5 5.5 5.5 10

55 - 120 50 - 120 50 - 120 65 - 120 65 - 120 80 - 110

30 - 50 25 - 45 25 - 45 40 - 60 40 - 60 35 - 65

83 x 45 x 88 80 x 83.5 x 91.8 80 x 83.5 x 91.8 109 x 109 x 120.5 109 x 109 x 120.5 175 x 183.5 x 152

(60 - 65 - 70) x 35 (55 - 58) x 70 (55 - 58) x 70 80 x 85 80 x 85 115 x 165

MCX 4 Pole Power Contactors

69 Technical Details

Range from 16-800A AC1

l

Wide operating band upto 100A AC1

l

Compact mechanical interlock arrangement

l

upto 80A

Type MCX 32 MCX 33 MCX 34

Catalogue no. CS97020 CS97021 CS97022

Conformance to standards

Preferred DG ratings kVA 100 125 160

Power contacts

No. of poles 4 4 4

Number of built-in auxiliary contacts 1 NO + 1 NC 1 NO + 1 NC 1 NO + 1 NC

Rated insulation voltage, Ui 1000V 1000V 1000V

Rated operational voltage, Ue 415V 415V 415V

Rated impulse withstand voltage, Uimp 8 kV 8 kV 8 kV

Conventional thermal current, lth / Utilisation category AC1 at 400C 160A 200A 255A

Motor Duty : 3 ph, 415V, 50Hz Utilization category AC-3 100A 120A 130A
0 0 0 0
Service temperature -20 C to 55 C -20 C to 55 C -20 C to 550C
0

With lug (sq mm) 1 x 120 1 x 120 1 x 120

Link 2 x (25 mm x 3 mm) 2 x (25 mm x 3 mm) 2 x (25 mm x 3 mm)

Main terminal capacity
Solid conductor (sq mm) - - -

Multistrand conductors (sq mm) - - -

Auxiliary terminal capacity Solid or multistrand conductors (sq mm) - - -

Coil
Voltage available for 50Hz opn, Uc (V) 110, 240, 415 110, 240, 415 110, 240, 415

Pick-up VA 550 550 550

VA 36 36 36
Hold-on
Watts 10 10 10

Pick-up (%Uc) 80 - 110 80 - 110 80 - 110

Limits of operation
Drop-off (%Uc) 35 - 65 35 - 65 35 - 65

Overall dimensions H x W x D in mm 175 x 183.5 x 152 175 x 183.5 x 152 175 x 183.5 x 152

Mounting dimensions H x W in mm 115 x 165 115 x 165 115 x 165

 70

MCX 41 MCX 42 MCX 43 MCX 44 MCX 45 MCX 46 MCX 47

CS97023 CS97024 CS97025 CS97026 CS97027 CS97028 CS94291

IS/IEC 60947-4-1 & IEC 60947-4-1

200 225 250 320 380 437.5 500

4 4 4 4 4 4 4

2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC 2 NO + 2 NC

1000V 1000V 1000V 1000V 1000V 1000V 1000V

415V 415V 415V 415V 415V 415V 415V

8 kV 8 kV 8 kV 8 kV 8 kV 8 kV 8 kV

325A 360A 400A 500A 600A 700A 800A

225A 265A 300A 350A 425A 500A 550A

0 0 0 0 0 0 0 0 0 0 0 0
-20 C to +550C
0
-20 C to +55 C -20 C to +55 C -20 C to +55 C -20 C to +55 C -20 C to +55 C -20 C to +55 C

2 x 240 2 x 240 2 x 240 2 x 240 2 x 240 2 x 240 2 x 240

2 x (50 mm x 5 mm) 2 x (50 mm x 5 mm) 2 x (50 mm x 5 mm) 2 x (50 mm x 5 mm) 2 x (50 mm x 5 mm) 2 x (50 mm x 5 mm) 2 x (50 mm x 5 mm)

- - - - - - -

- - - - - - -

2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5 2 x 2.5

110, 240, 415 110, 240, 415 110, 240, 415 110, 240, 415 110, 240, 415 110, 240, 415 110, 240, 415

2100 2100 2100 2100 1000 1000 1000

95 95 95 95 25 25 25

35 35 35 35 10 10 10

80 - 110 80 - 110 80 - 110 80 - 110 80 - 110 80 - 110 80 - 110

35 - 65 35 - 65 35 - 65 35 - 65 35 - 65 35 - 65 35 - 65

278 x 248 x 221 278 x 248 x 221 275 x 248 x 221 275 x 248 x 221 275 x 248 x 221 275 x 248 x 221 275 x 248 x 221

170 x 225 170 x 225 170 x 225 170 x 225 170 x 225 170 x 225 170 x 225

MCX 4 Pole Power Contactors

71 Ordering Information

Accessories for MCX

Add-on blocks Mechanical Interlock Kit

MNX / MCX MNX / MCX MCX M3

Top Add-on Block Side Add-on Block (MCX 21-22)

Spares for MCX

MCX Spare Kits

Contactor Auxiliary Add on Block Mechanical Surge Spare*

Spare kit
Type Mounting Configuration Cat. No. Mounting Configuration Cat. No. Interlock Kit Suppressor Coil
4 NO CS94112
MCX 01 First Left 1 NO + 1 NC CS94220 3 NO + 1 NC CS94113
MCX 02 First Right 1 NO + 1 NC CS94221 2 NO + 2 NC CS94114
MCX 03 Top 1 NO + 3 NC CS94115 CS94126 CS94166 CS94105 -
MCX 04 4 NC CS94116
2 NO CS94117
1 NO + 1 NC CS94118
2 NC CS94119 MCX 11 CS94077
CS94009
MCX 11 First Left 1 NO + 1 NC CS94201 1 NO CS94120 - MCX 12 CS94078
MCX 12 First Right 1 NO + 1 NC CS94202 1 NC CS94121 CS94163
MCX 21 Second Left 1 NO + 1 NC CS94203 MCX 21 CS94330
CS93095 CS94192
MCX 22 Second Right 1 NO + 1 NC CS94204 MCX 22 CS94331
MCX 31 MCX 31 CS94081
MCX 32 MCX 32 CS94082
CS94992 CS94164 CS94196
MCX 33 MCX 33 CS94083
MCX 34 First Left 1 NO + 1 NC CS94205 MCX 34 CS94084
MCX 41 First Right 1 NO + 1 NC CS94206 MCX 41 CS94295
MCX 42 Second Left 1 NO + 1 NC CS94207 MCX 42 CS94296
CS94195
MCX 43 Second Right 1 NO + 1 NC CS94208 MCX 43 CS94297
CS94301 CS94165
MCX 44 MCX 44 CS94298
MCX 45 MCX 45 CS94299
CS94193
MCX 46 MCX 46 CS94300
MCX 47

* Add 4 digit suffix as per required coil voltage given below.

Note: In MCX 31-34 mounting of first right add-on block is not permitted. For extra add-on block use second left add-on block on the
existing first left add-on block

Ordering Suffix for Coil Voltages

Std Coil voltage at 50Hz 24 42 48 110 220 240 360 380 415 440 525
Ordering Suffix GOOO JOOO HOOO AOOO KOOO BOOO COOO LOOO DOOO POOO MOOO
Note: Ordering suffix for MCX 21/22: FOOO - 240V AC, ROOO - 415V AC
Overall Dimensions 72

Four Pole Contactors - Type MCX

MCX 01 / MCX 02 / MCX 03 / MCX 04

10.8
10.8 10.8

70
65
60

M3.5 x 9
83.7

81.5
Cross-Head
Screws

64.95
33.91 Mounting Holes
8

to Suit M4 Screws
81
83 35

45

MCX 11 / MCX 12

76 M3.5 Screw
12 83.5 Mouting with 58
19 M4 Screw

M5 x 21 Pan
3
Head Srew
D= 91.8

43

31
M3 Fixing for
70
55

Add-on Block
65.9

32

44
18.5

2
2

H=80

MCX 21 / MCX 22

109 (2 NO + 2 NC)
Terminal Screw 106 (1 NO + 1 NC)
(M6) 30 30 30
13
120.5

1 L1 3 L2 5 L3 7 L4
83.5

109
96

MCX 22

2 T1 4 T2 6 T3 8 T4

12 80 85 (Mounting)

Add-on (1 NO + 1 NC) (Mounting)

All dimensions in mm.

MCX 4 Pole Power Contactors

73 Overall Dimensions (With Mechanical Interlock Kit)

Four Pole Contactors - Type MCX

MCX 31 / MCX 32 / MCX 33 / MCX 34

165 (Mounting)
45 45 45 152
20
Mounting Screws 61.5
for M5 Screws 3
115 (Mounting)
175
156

136
18
183.5

MCX 41 / MCX 42 / MCX 43 / MCX 44 / MCX 45 / MCX 46 / MCX 47

248
Mounting Holes Screws
245 for M8 Screws Terminal Screws
225 M12 x 40

62.5 62.5 62.5

35
241
275

170

15
5
247 (2 NO + 2 NC)
55
271 (4 NO + 4 NC) 221

All dimensions in mm.

Overall Dimensions (With Mechanical Interlock Kit) 74

Four Pole Contactors - Type MCX

MCX 01-04

83.7
81.5

67.8
70

65

77
60
65
10
45 45 35 20 35

MCX 11 / MCX 12

M6 Mounting
Hole - 4 Nos. O6, 2 Holes for Earthing
19 Screws

CS943110000
MCX-M2S
Mechanical Interlock Kit
138.7
124.3

140
120
76.4

196 156

All dimensions in mm.

MCX 4 Pole Power Contactors

75 Overall Dimensions

Four Pole Contactors - Type MCX

MCX 21-22
108.9

M6 Terminal
Screws

144.7
108.5
25
80 72 80
M6 Mounting Hole - 6 Nos.
CS93095
Mechanical
Interlock
Kit For
MCX 21/22

1 L1 3 L2 5 L3 7 L4 1 L1 3 L2 5 L3 7 L4
140
124

85
MCX 22 MCX 22

2 T1 4 T2 6 T3 8 T4 2 T1 4 T2 6 T3 8 T4

30 30 30
62
131 131
297

MCX 31-34
177

425

Suitable Mounting Screws M6 - (6 Nos)

197 197

240V 240V
50Hz 50Hz

1 L1 3 L2 5 L3 7 L4 1 L1 3 L2 5 L3 7 L4
A1 A1
164

180

MCX 34 MCX 34

A2 A2
2 T1 4 T2 6 T3 8 T4 2 T1 4 T2 6 T3 8 T4

240V 240V
50Hz 50Hz

6.5

All dimensions in mm.

Overall Dimensions (With Mechanical Interlock Kit) 76

Four Pole Contactors - Type MCX

MCX 41 / MCX 42 / MCX 43 / MCX 44 / MCX 45 / MCX 46 / MCX 47

M12 - Terminal Screws

280 280
9 - Mounting Holes

MCX 41 - 45
Contactors
MCX-M5
Mechanical
Interlock
Kit
A1 A1

275
3 L2 5 L3 3 L2 5 L3
1 L1 7 L4 1 L1 7 L4
241

250
MCX 41 MCX 41

2 T1 4 T2 8 T4 2 T1 8 T4
6 T3 4 T2 6 T3
A2 A2

9 90
49.75 49.75
256
62.5 62.5 62.5 99.5
280 280
595

1 L1 3 L2 5 L3
7 L4
1 L1 3 L2 5 L3
7 L4

MCX 41
2 T1
MCX 41
4 T2
A2 6 T3 8 T4
2 T1
4 T2
A2 6 T3 8 T4

All dimensions in mm.

MCX 4 Pole Power Contactors

MO C
Capacitor Duty Contactors

MO C Capacitor Duty Contactors are specially designed for capacitor switching applications. As capacitor
switching is associated with high inrush current, the contactors are provided with damping resistors which limit the
value of inrush current to a safe value. The contactors are used in APFC panels for switching power capacitors
depending upon the amount of reactive power compensation required.
-0.95 -0.96
-0.97
-0.98
-0.99

1.00

cos +0.99

+0.98

The road to higher reliability

79 Capacitor Duty Contactors

Power Termination

Separate Termination
for damping resistors

A1 1 3 5

A2 2 4 6

DIN rail Mounting

Delatching Auxiliary
contacts

In keeping with the mission to deliver the best, Larsen & Toubro understands the
requirements of the RoHS directive. The directive restricts the use of hazardous
substances in electrical and electronic equipment and bans electrical
equipment containing more than permitted levels of lead, cadmium, mercury,
hexavalent chromium, polybrominated biphenyl (PBS) and polybrominated
diphenyl ether (PBDE) flame retardants.
Benefits of using MO C Contactors 80

Benefits of using Capacitor Duty Contactors:

Since switching of capacitor banks involves high transient inrush currents, the size of the contactor required to
switch these high currents becomes higher. Hence, current limiting inductors are used in series to attenuate this
inrush current. This increases the system cost and panel space.

A typical case below illustrates the magnitude of transient inrush current for switching of a capacitor bank. For a
12.5 kVAr capacitor bank:

Rated current of 12.5 kVAr 415V Capacitor = 18A

Peak Inrush current without Damping Resistors = 1200A

Capacitor Duty Contactors are designed to limit this high transient inrush current by introducing damping
resistors with early make auxiliary contacts. The current limiting due to damping resistors protects the APFC
system from harmful effects of the capacitor charging inrush current.

Peak Inrush current with Damping Resistors = 260A

It is observed that peak inrush current with damping resistors is one fifth of that without damping resistors.
As the contactor is now required to switch the rated capacitor current, the size of the contactor required is smaller.
Thus the system cost and panel space are significantly lower when Capacitor Duty Contactors are used.

MO C Capacitor Duty Contactors:

MO C Capacitor Duty Contactors are designed for switching 3 phase, single or multi-step capacitor bank. In
conventional capacitor switching contactors, early make auxiliary contacts used for insertion of damping
resistors used to remain in the circuit continuously. During current breaking these auxiliary contacts would also
carry and break the currents due to higher arc resistance in the main pole during arcing. This current breaking by
auxiliary contacts at higher transient recovery voltage causes unreliable product performance and premature
product failures.

MO C range of capacitor switching contactors have patented mechanism which disconnects the early make
auxiliary contacts after the main contacts are closed. This completely eliminates the possibility of auxiliary
contacts carrying and breaking the currents during breaking operation. This enhances the product switching
performance and improves the product life.

Features and benefits of MO C Capacitor Duty Contactors

Feature Customer Benefits
Improved switching performance
De-latching auxiliary contacts
Reduced losses in auxiliary contacts
Dual contact gap for auxiliary contacts
Higher electrical life
Enhanced product safety
Encapsulated resistor assembly
No flash over between phases
Ease if wiring
Separate termination of damping resistors
Enhanced operational reliability
Improved switching performance
Wide and chatter-free operating band Higher electrical life
Higher product reliability

MO C Capacitor Duty Contactors

81 Technical Details

Available for capacitor range from 8.5 - 80 kVAr

l

Modular design saving precious panel space

l

De-Latching auxiliary contacts

l

Separate termination of damping resistors

l

Encapsulated resistor assembly ensuring safety

l

Type Designation MO C8.5 MO C12.5 MO C15

Built in Aux 1 NO CS96320 CS96321 CS90019

Catalogue No.
Contacts 1 NC CS96337 CS96338 CS90020

Conformance to Standards

Rated Operational Current l (AC - 6b) 3 phase

Ie A 12 18 21
delta connected capacitor bank at 415V, 50Hz

Short Circuit Protection

230VAC kVAr 5.0 7.5 8.5

kVAr Rating
415VAC kVAr 8.5 12.5 15
Max. Operational Voltage Ue V 415 415 415
Rated Insulation Voltage Ui V 690 690 690
Rated Impulse Withstand Voltage Uimp kV 8 8 8
Degree of Protection

Solid Conductor mm2 2 x 10 2 x 10 2 x 10

2
Main Terminal Capacity Stranded Conductor mm 2 x 10 2 x 10 2 x 10
Finely Stranded Conductor mm2 2x6 2x6 2x6

Pick-up % Uc V 75 - 110 75 - 110 75 - 110

Coil Operating Band
Drop-off % Uc V 35 - 65 35 - 65 35 - 65

Pick-up VA 77 77 77

Coil Consumption VA 9 9 9
Hold-on
W 2.8 2.8 2.8

Mechanical Million 10 10 10
Life (Operating cycles)
Electrical Million 0.2 0.2 0.2
Max. Operating Frequency Operations / Hr 240 240 240

Making
Operating Sequence
Breaking

Height H mm 83.5 83.5 83.5

Width W mm 45 45 45
Overall Dimensions
Depth D mm 133.5 133.5 133.5
Mounting Dimensions mm 35 x 60 - 65 - 70 35 x 60 - 65 - 70 30 x 60 - 65 - 70

* Accessories and Spares same as that of MO contactor.

Note: Contact replacement is not permitted in MO C contactors
 82

MO C20 MO C25 MO C33.5 MO C50 MO C70 MO C80

CS90021 CS96322 CS96323 CS96324 CS96325 CS96326

CS90022 CS96339 CS96340 CS96341 CS96342 CS96343

IS/IEC 60947-4-1, IEC 60947-4-1, EN 60947-4-1

28 35 50 70 95 110

gG type fuses rated at 1.5 - 2 Ie

11 14.5 20 30 40 45

20 25 33.5 50 70 80

415 415 415 415 415 415

690 690 1000 1000 1000 1000

8 8 8 8 8 8

IP20

2 x 10 2 x 10 - - - -

2 x 10 2 x 10 2 x 35 2 x 35 2 x 70 2 x 70

2x6 2x6 2 x 25 2 x 25 2 x 50 2 x 50

75 - 110 75 - 110 75 - 110 75 - 110 75 - 110 75 - 110

35 - 65 35 - 65 35 - 65 35 - 65 35 - 65 35 - 65

77 77 144 144 240 240

9 9 15 15 25 25

2.8 2.8 5 5 6.5 6.5

10 10 10 10 10 10

0.2 0.2 0.2 0.2 0.2 0.2

240 240 240 240 240 240

Early Make / Main

Main Contacts Break

83.5 83.5 123.5 123.5 135 135

45 45 55 55 70 70

133.5 133.5 163.0 163.0 175.0 175.0

30 x 60 - 65 - 70 35 x 60 - 65 - 70 45 x 100 - 105 45 x 100 - 105 60 x 115 - 120 60 x 115 - 120

MO C Capacitor Duty Contactors

83 Ordering Information

Contactors
Product Designation kVAr Rating @ 415V 50Hz In Built Aux contacts Cat No*
MO C8.5 8.5 1 NO CS96320
MO C8.5 8.5 1 NC CS96337
MO C12.5 12.5 1 NO CS96321
MO C12.5 12.5 1 NC CS96338
MO C15 15 1 NO CS90019
MO C15 15 1 NC CS90020
MO C20 20 1 NO CS90021
MO C20 20 1 NC CS90022
MO C25 25 1 NO CS96322
MO C25 25 1 NC CS96339
MO C33.5 33.3 1 NO CS96323
MO C33.5 33.5 1 NC CS96340
MO C50 50 1 NO CS96324
MO C50 50 1 NC CS96341
MO C70 70 1 NO CS96325
MO C70 70 1 NC CS96342
MO C80 80 1 NO CS96326
MO C80 80 1 NC CS96343

* : Add four digit suffix as per coil voltage

Accessories & Spares

Add on Blocks Spare Coils
Mounting Position Contacts Cat. No. For Contactor Cat. No.
First Left 1 NO + 1 NC CS94580OOOO MO C8.5 - MO C25 CS96317
First Right 1 NO + 1 NC CS94581OOOO MO C33.5 - 50 CS96318
Second Left 1 NO + 1 NC CS94582OOOO MO C70 - 80 CS96319
Second Right 1 NO + 1 NC CS94583OOOO * Add four digit suffix as per coil voltage

Ordering Suffix for Coil Voltages

Std Coil voltage at 50Hz 24 42 48 110 220 240 360 380 415 440 525
Ordering Suffix GOOO JOOO HOOO AOOO KOOO BOOO COOO LOOO DOOO POOO MOOO
Overall Dimensions 84

MO C

2T1 4T2 6T3

D

A
T
L

C H
Mounting
Screw
W

P P

MO C
Label
8.5 - 25 33.5 - 50 70 - 80
W 45 55 70
D 133.5 163 175
H 83.5 123.5 135
N 26 26 26
T 60 68 68
C 22.8 27 35
L 19.6 29.5 30
S 50 82 93
N

P 14.4 18 23
A 113 142 154

SUPERNOVA

All dimensions in mm.

MO C Capacitor Duty Contactors

MN0 Auxiliary Contactors

MN0 AC and MN0 DC are basic four pole contactor relays. MN0 contactors are generally used in control system
applications. With add-on blocks these contactors can give you a maximum of 8NO to 8NC contact combinations.
They are suitable for industrial as well as commercial installations where complex control is required.
The master key to
every control requirement
87 Technical Details

Salient Features & Benefits

Front
l ON / OFF indication
Suitable
l for DIN Rail / Base mounting
Easy accessibility to coil & contacts
l
Alphanumeric terminal markings eliminate wiring error
l

Contact Combination 4 NO 3 NO + 1 NC 2 NO + 2 NC 1 NO + 3 NC 4 NC
Type MN0 40E MN0 31E MN0 22E MN0 13E MN0 04E
AC Control SS94660 SS94661 SS94662 SS94663 SS94664
DC Control SS94665 SS94666 SS94667 SS94668 SS94669

Type MN0 AC MN0 DC

Rated Insulation Voltage (Ui) 690VAC

Rated Operational Voltage (Ue) 415VAC
Thermal Current (lth) 10A
Rated Current for AC-15 Utilisation Category (le) 4A at 415V, 50Hz
Sequence of Operations Break before make
Maximum Frequency of Operations AC-15 (Operating Cycle / hr.) 1200
Terminal Capacity 2 x 2.5 mm2
Pick-up 68VA 6.2W
Coil Consumption
Hold-on 11VA 6.2W
24, 42, 110, 220, 240
Standard Coil Voltages (Uc) 24, 42, 110, 220VDC
360, 415, 525VAC at 50Hz
Overall Dimensions (H x W x D) 81 x 45 x 86 mm 81 x 45 x 120 mm

Accessories & Spares

Add on Auxiliary Contact Block Surge Suppressor for MN0

1 NO + 1 NC 2 NO + 2 NC MN - S1

1 NO / 1 NC SS94715 / SS94716 Type MN0 AC MN0 DC

2 NO / 2 NC SS94080 / SS94082 Mechanical Interlock Kit SS94071 SS94071 + SS94766
4 NO / 4 NC SS94083 / SS94087 Surge Supressor SS94623 SS94781
1 NO + 1 NC SS94081 Spare Coil SS94191 SS94651
2 NO + 2 NC SS94085
3 NO + 1 NC SS94084
1 NO + 3 NC SS94086

Ordering Suffix for Coil Voltages

Std Coil voltage at 50Hz 24 42 48 110 220 240 360 380 415 440 525
Ordering Suffix GOOO JOOO HOOO AOOO KOOO BOOO COOO LOOO DOOO POOO MOOO

Coil Voltage VDC 24 48 110 220

Suffix 4OOO 5OOO 1OOO 2OOO
Overall Dimensions 88

MN0 AC
With Add on Contact 52
Element
113

102

A1

86

65
50Hz
240V

6
2

60-65-70 35

81 45

Possibility of Mounting on
TH35-7.5 Rail as per IS : 11039

MN0 DC
With Add on Contact 52
Element

DC
220 V
147

136

120

99.7
10
2

60-70 35
81 45

Possibility of Mounting on
TH35-7.5 Rail as per IS : 11039

All dimensions in mm.

MN0 Auxiliary Contactors

MR Single Pole Contactors

MR range caters to single phase applications. The contactors are rugged and have a wide operating band upto
25A (AC-3). Typical applications include Compressors in air-conditioning equipment, Single Phase Pumps,
Single Phase Power Supply, Single Phase Heater etc. Their high AC-1 rating ensures better overload capacity.
Access new levels of versatility
91 Technical Details

Wide operating band upto 25A AC-3

l

High AC-1 rating ensuring better overload capacity

l

Fast on termination (optional)

l

Type Designation Units MR 11W MR 11NW MR 13

Catalogue no. CS94176 CS94177 CS94992
Conforms to Standards IS/IEC 60947-4-1, IEC 60947-4-1
Power Contacts
No. of poles 1 1+ shunted neutral 1
Rated insulation voltage (Ui) V 690
Rated impulse withstand voltage (Uimp) kV 8
Conventional thermal current, Ith (AC-1) A 63 63 63
Motor duty : single phase 240V, 50Hz (AC-3) kW/hp/A 3.7 / 5 / 25 3.7 / 5 / 25 5.5 / 7.5 / 40
Motor duty : single phase 240V, 50Hz (AC-4) kW/hp/A 3.7 / 5 / 25 3.7 / 5 / 25 5.5 / 7.5 / 40
Short-circuit protection gG fuse at 240V A 63 63 100
Mechanical life Million 10 10 10
Maximum frequency : (No Load) Cy/h 7200
(AC-1) Cy/h 3000
(AC-3) Cy/h 750
(AC-4) Cy/h 300
0 0 0
Service temperature C -5 C to 55 C
Solid conductor Sq. mm 1 x 10
Main terminal capacity
Multi strand Sq. mm 2 x 10
Coil
Voltages available at 50Hz, Uc V 24, 220, 240
Pick-up VA 40
Hold-on VA 8.5
W 2.5
Limits of operation
Pick-up (% Uc) 60-110 60-110 80-110
Drop-off (% Uc) 20-50 20-50 20-65
Note: Ordering suffix BOOO-240V, 50Hz

Add on Auxiliary Contact Block for MR MR 1 NO

Auxiliary contact block

Type designation MR-A1
Catalogue no. CS94179
Conforms to Standards IS /IEC 60947-5-1, IEC 60947-5-1
For contactors MR 11W / MR 11NW
Contacts
No. of poles 1
Contact details 1 NO
Rated insulation voltage, Ui V 690
Conventional thermal current, Ith A 10
Rated current at 240V, 50Hz Utilization category AC-15 A 4
Short-circuit protection gG fuse at 240V A 10
Electrical durability (AC-15) at 240V, 50Hz Million 1
Maximum frequency of operation at UC for AC-15 Cy/h 1200
0
Service temperature C -50C to 550C
Solid conductors Sq. mm 2 x 2.5
Terminal capacity
Multi-stranded conductors Sq. mm 2 x 2.5
Overall Dimensions 92

MR 11W / MR 13

Terminal Screw M5
Mounting Holes for M5
8.7

76.8
41.3
42.5

56.3
49
38.3
75.8
44.3 51
88.4

MR 11NW

Terminal Screw M5
76.8

55.5
49

60.8 Mounting Holes for M5

N
38.3

44.3

240V 50Hz
240V 50Hz

75.8

A2

70.5

All dimensions in mm.

MR Single Pole Contactors