The series of (MCB) mini circuit breakers are suitable for circuit of AC 50HZ or 60HZ.rated voltage up to 400V,rated current up to 63A,they are mainly used in office,singe-pole lighting,distribution system for overload and short circuit protection. The series of miniature circuit-breakers conform to IEC60898 and GBI0963 standards,and comply with CCC,CE...certificate. 42.5*23.5*34cm 22kg 240pcs.