C30N series circuit breaker 2.Number of Poles 1P, 1P+N, ... , 2, 3, 4, 6, 10, 16, 20 C30N series circuit breakerMCB ,MCCB ,ELCB ,etc C30N series circuit breaker is used in lighting ... operationsMechanical Life(O-C) no less than 20000 operationsProtection DegreeIP20 C30N series circuit breaker