A Moulded case circuit breaker (MCCB) is a type of electrical protection device that is used to protect the electrical circuit from excessive current, which can cause overload or short circuit . Specification: Model NO: YCM1 Type: Circuit Breaker Poles Number: 3,4 Function: Circuit Breaker Failure Protection Certification: CE Specification: IEC 60898, NEMA AB1 Production Capacity: 1000PCS/DAY HS Code : 85362000 Package includes: 1 x CNC Molded Case Circuit Breakers YCM1