C30N series circuit breaker 2.Number of Poles 1P, 1P+N, 2P, 3P, 3P+N, 4P 3.Rated Current (A) 1, 2, ... , 4, 6, 10, 16, 20 C30N series circuit breakerMCB ,MCCB ,ELCB ,etc C30N series circuit breaker is used in lighting distribution system or ... motor distribution system for protection overload and short-circuit in the system ...