... , ISO9001 SpecificationsMCB 1.Number of poles: 1P, 1P+N, 2P, 3P, 3P+N, 4P 2.Rated Current (A):1, 2, 3, 4 ... , 40, 50,63 ,100 Number of Poles1P, 1P+N, 2P, 3P, 3P+N, 4P Rated Current (A)1, 2, 3, 4, 6 ... mounting Standards: IEC/EN60898 GB 10963 MCB mini circuit breaker MCCB RCCB earth leakage circuit breaker