... Air Circuit Breaker,circuit breaker,ACB 1.Pole: 3 or 4 2.Dielectric Capability: AC50Hz 3600V/min 3."Naidian" NDW1 Air Circuit Breaker,circuit breaker,ACBApplicant: NDW1 Series Intelligent Universal Circuit Breaker ... , 65 Dielectric Capability: AC50Hz 3600V/min Frame Rated Current Inm(A): 2000, 3200, 4000, 5000 Rated current In(A): 630, 800, 1000, 1250 ...