China OEM Mccb Molded Case Circuit Breaker Exporter - CJMM1 Series Moulded Case Circuit Breakers(MCCB) – C&J

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

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

Outline Installation Size

CJMM1-63, 100, 225, Outline and Installation Sizes (Front board connection)

CJMM1-400,630,800,Outline and Installation Sizes (Front board connection)

Back Board Connection Cut-out Diagram Plug In

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.