High Quality OEM ODM MCCB Molded Case Residual Current Circuit Breaker 125A 400A 630A 800A 1250A 3P 4P

Scope of application The MKLB-L series moulded case circuit breaker with residual current protection (hereinafter referred to as residual current circuit breaker)is suit table for infrequent switching and motor starting inAC 50Hz(or 60Hz)circuits with rated insulation voltage of 1000V rated operating voltage of 400V and rated operating current of 630A(800A).The circuit breaker has overload,short circuit,and under voltage protection functions,which can protect the circuit and power equipment from damage;meanwhile,it can provide indirect

contact protection for people and also provide protection against potential fire hazards caused by long-term grounding faults that cannot be detected by over current protection.When other protective devices fail.,the MKLB-L residual current circuit breaker with rated residual operating current of 30mA can directly provide additional protection.

◎ The circuit breakers are classified into L-type and M-type according to their rated ultimate short-circuit breaking capacity.

◎ The circuit breaker has the characteristics of small volume,high breaking capacity,short arc and high vibration resistance.

◎ The circuit breaker can be installed vertically(i.e.upright)or horizontally(i.e.transversely).

◎ The circuit breaker has isolation function,and its corresponding symbolis“— ”

◎ The circuit breaker complies with the standards of IEC60947-2,GB14048.2 and Appendix B for circuit reakers with residual current protection.

◎ The circuit breaker doesn'tallow reverse wiring,that is,only 1,3,and 5 are allowed to connect to the power line, and 2,4,and 6 are allowed to connect to the load line.

◎ Reverse wiring can be customized if needed.