CJM1 Mould Case Circuit Breaker Customized 125A with High Breaking Capacity MCCB

Short Description:

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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Product Detail

Product Tags

MOLDED CASE CIRCUIT BREAKERS (MCCB)

Molded case circuit breakers are electrical protection devices that are designed to protect the electrical circuit from excessive current. This excessive current can be caused due to an overload or short circuit. The molded case circuit breakers can be used in a wide range of voltages and frequencies with a defined lower and upper limit of adjustable trip settings. In addition to tripping mechanisms, MCCBs can also be used as manual disconnection switches in case of emergency or maintenance operations. MCCBs are standardized and tested for overcurrent, voltage surge, and fault protection to ensure safe operation in all environments and applications. They work effectively as a reset switch for an electric circuit to disconnect power and minimize damage caused by a circuit overload, ground fault, short circuits, or when current exceeds the current limiting.

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