C30N series circuit breaker 2.Number of Poles 1P, 1P+N, 2P, ... , 3, 4, 6, 10, 16, 20 C30N series circuit breakerMCB ,MCCB ,ELCB ,etc C30N series circuit breaker is used in lighting distribution ... mainly used in AC 50Hz/60Hz single-pole 230V or two, three, four pole 400V circuit for overload and short-circuit ... Life(O-C) no less than 20000 operationsProtection DegreeIP20 C30N series circuit breaker