Surge Protective Device,SPD *Poles:1P, 2P, 3P, 4P, 1P+N, ... *Nominal discharge current (8/20us) (In):5kA,10kA Surge Protective Device,SPDSurge Protector circuit breaker( protective SPD Place of Origin: ChinaSpecifications: 1 ... , 3P, 4P, 1P+N, 2P+N, 3P+N, 3P+NPE 3) Max. Continuous operating voltage (Uc): 255V - 440V4) Nominal discharge current ...