CJMM1 Series Moulded Case Circuit Breakers(MCCB)

Application CJMM1 series moulded case circuit breaker(hereinafter referred to as circuit breaker) is pplicable for AC 50/60HZ power distribution network circuit with rated insulation voltage of 800V, rated operation voltage of 690V and rated operation current from 10A to 630A, it's used to distribute power and prevent circuit and power supply equipment from damage due to overload, short circuit, under voltage and other faults, it's also used for infrequent start of motor as well as overload, short circuit and under voltage protection.This circuit breaker owns advantages of small volume, high breaking capacity, short arcing (or noarcing)etc, it can be equipped with accessories like alarm contact, shunt release, auxiliary contact etc, it's an ideal product for user. The residual current circuit breaker can either be vertically installed (vertical installation) or be horizontally installed (horizontal installation) The product is in accordance with the standards of IEC60947-2 and Gb140482
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Products Details

Product Model

CJ:Enterprise code M:Moulded case circuit breaker 1:Design No □:Rated current of frame □:Breaking capacity characteristic code/S denotes standard type (S can be omitted)H denotes higher type Note: There are four types of neutral pole (N pole) for four phases product.The neutral pole of type A is not equipped with over-current tripping element, its always switched on, and it is not switched on or off together with other three poles. The neutral pole of type B is not equipped with over-current tripping element, and it's switched on or off together with other three poles(the neutral pole is switched on before being switched off)The neutral pole of type C is equipped with over-current tripping element, and it's switched on or off together with other three poles(the neutral pole is switched on before being switched off) The neutral pole of type D is equipped with over-current tripping element, it's always switched on and is not switched on or off together with other three poles.

Table 1

Accessory name Electronic release Compound release
Auxiliary contact,under voltage release,alam contact 287 378
Two auxiliary contact sets,alarm contact 268 368
Shunt release, alarm contact, auxiliary contact 238 348
Under voltage release,alarm contact 248 338
Auxiliary contact alarm contact 228 328
Shunt release alarm contact 218 318
Auxiliary contact under-voltage release 270 370
Two auxiliary contact sets 260 360
Shunt release under-voltage release 250 350
Shunt release auxiliary contact 240 340
Under-voltage release 230 330
Auxiliary contact 220 320
Shunt release 210 310
Alarm contact 208 308
No accessory 200 300

Classification

  • By breaking capacity: a standard type(type S) b higher breaking capacity type(type H)
  • By connection mode: a front board connection, b back board connection, c plugin type
  • By operation mode: a direct handle operation, b rotation handle operation,c electrical operation
  • By number of poles: 1P, 2P, 3P, 4P
  • By accessory: alarm contact, auxiliary contact, shunt release, under voltage release

Normal Service Condition

  • The altitude of the installation site shall not exceed 2000m
  • Ambient air temperature
  • The ambient air temperature shall not exceed +40℃
  • The average value shall not exceed +35℃ with in 24 hours
  • The ambient air temperature shall not be less than -5℃
  • Atmosphere condition:
  • 1There lative humidity of atmosp here shall not exceed 50% at highest temperature of +40℃,and it can be higher atalower temperature,when theaver agelowest temperature in the wettest month doesn't exceed 25℃ can be 90%,conden sationon product surfacedue to temperature change must be takenin to account.
  • The pollution level is class 3

Main Technical Parameter

1 Rated value of circuit breakers
Model Imax (A) Specifications (A) Rated Operation Voltage(V) Rated Insulation Voltage(V) Icu (kA) Ics (kA) Number of Poles (P) Arcing Distance (mm)
CJMM1-63S 63 6,10,16,20 25,32,40, 50,63 400 500 10* 5* 3 ≤50
CJMM1-63H 63 400 500 15* 10* 3,4
CJMM1-100S 100 16,20,25,32 40,50,63, 80,100 690 800 35/10 22/5 3 ≤50
CJMM1-100H 100 400 800 50 35 2,3,4
CJMM1-225S 225 100,125, 160,180, 200,225 690 800 35/10 25/5 3 ≤50
CJMM1-225H 225 400 800 50 35 2,3,4
CJMM1-400S 400 225,250, 315,350, 400 690 800 50/15 35/8 3,4 ≤100
CJMM1-400H 400 400 800 65 35 3
CJMM1-630S 630 400,500, 630 690 800 50/15 35/8 3,4 ≤100
CJMM1-630H 630 400 800 65 45 3
Note: When the test parameters for the 400V, 6A without heating release
2 Inverse time breaking operation characteristic when each pole of overcurrent release for power distribution is powered on at the same time
Item of test Current (I/In) Test time area Initial state
Non-tripping current 1.05In 2h(n>63A),1h(n<63A) Cold state
Tripping current 1.3In 2h(n>63A),1h(n<63A) Proceed immediately after No.1 test
3 Inverse time breaking operation characteristic when each pole of over- current release for motor protection is powered on at the same time.
Setting Current Conventional time Initial State Note
1.0In >2h Cold State
1.2In ≤2h Proceeded immediately after the No.1 test
1.5In ≤4min Cold State 10≤In≤225
≤8min Cold State 225≤In≤630
7.2In 4s≤T≤10s Cold State 10≤In≤225
6s≤T≤20s Cold State 225≤In≤630
4 The instantaneous operation characteristic of circuit breaker for power distribution shall be set as 10in+20%, and the one of circuit breaker for motor protection shall be set as12ln±20%

Outline Installation Size

CJMM1-63, 100, 225, Outline and Installation Sizes (Front board connection)
Sizes(mm) Model Code
CJMM1-63S CJMM1-63H CJMM1-63S CJMM1-100S CJMM1-100H CJMM1-225S CJMM1-225
Outline Sizes C 85.0 85.0 88.0 88.0 102.0 102.0
E 50.0 50.0 51.0 51.0 60.0 52.0
F 23.0 23.0 23.0 22.5 25.0 23.5
G 14.0 14.0 17.5 17.5 17.0 17.0
G1 6.5 6.5 6.5 6.5 11.5 11.5
H 73.0 81.0 68.0 86.0 88.0 103.0
H1 90.0 98.5 86.0 104.0 110.0 127.0
H2 18.5 27.0 24.0 24.0 24.0 24.0
H3 4.0 4.5 4.0 4.0 4.0 4.0
H4 7.0 7.0 7.0 7.0 5.0 5.0
L 135.0 135.0 150.0 150.0 165.0 165.0
L1 170.0 173.0 225.0 225.0 360.0 360.0
L2 117.0 117.0 136.0 136.0 144.0 144.0
W 78.0 78.0 91.0 91.0 106.0 106.0
W1 25.0 25.0 30.0 30.0 35.0 35.0
W2 - 100.0 - 120.0 - 142.0
W3 - - 65.0 65.0 75.0 75.0
Install Sizes A 25.0 25.0 30.0 30.0 35.0 35.0
B 117.0 117.0 128.0 128.0 125.0 125.0
od 3.5 3.5 4.5 4.5 5.5 5.5
CJMM1-400,630,800,Outline and Installation Sizes (Front board connection)
Sizes(mm) Model Code
CJMM1-400S CJMM1-630S
Outline Sizes C 127 134
C1 173 184
E 89 89
F 65 65
G 26 29
G1 13.5 14
H 107 111
H1 150 162
H2 39 44
H3 6 6.5
H4 5 7.5
H5 4.5 4.5
L 257 271
L1 465 475
L2 225 234
W 150 183
W1 48 58
W2 198 240
A 44 58
Install Sizes A1 48 58
B 194 200
Od 8 7
Back Board Connection Cut-out Diagram Plug In
Sizes(mm) Model Code
CJMM1-63S CJMM1-63H CJMM1-100S CJMM1-100H CJMM1-225S CJMM1-225H CJMM1-400S CJMM1-400H CJMM1-630S CJMM1-630H
Sizes Of Back Board Connection Plug in Type A 25 30 35 44 44 58
od 3.5 4.5*6 deep hole 3.3 7 7 7
od1 - - - 12.5 12.5 16.5
od2 6 8 8 8.5 9 8.5
oD 8 24 26 31 33 37
oD1 8 16 20 33 37 37
H6 44 68 66 60 65 65
H7 66 108 110 120 120 125
H8 28 51 51 61 60 60
H9 38 65.5 72 - 83.5 93
H10 44 78 91 99 106.5 112
H11 8.5 17.5 17.5 22 21 21
L2 117 136 144 225 225 234
L3 117 108 124 194 194 200
L4 97 95 9 165 163 165
L5 138 180 190 285 285 302
L6 80 95 110 145 155 185
M M6 M8 M10 - - -
K 50.2 60 70 60 60 100
J 60.7 62 54 129 129 123
M1 M5 M8 M8 M10 M10 M12
W1 25 35 35 44 44 58

What is MCCB?

MCCB is shorthand for Moulded Case Circuit Breaker. When the total current surpasses the limitation of a micro fuse box, the user employs it as just another sort of overcurrent protection device. The MCCB protects from overvoltages as well as fault current failures, as well as shifting the circuits. Users may utilize it even in household applications for more outstanding current ratings and fault occurs levels. Users use MCCBs in commercial processes because of their average comprehensive ratings and high breakdown capacity. MCCBs can also safeguard capacitor banks, generators, and the distribution of main electric feeders. When an application requires discriminatory practices, customizable overloading settings, or ground-fault security, it provides suitable protection.

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