C30N series circuit breaker 2.Number of Poles 1P, 1P+N, ... 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 ... less than 20000 operationsProtection DegreeIP20 C30N series circuit breaker