circuit breaker 3VA6 UL Frame 400 breaking capacity class C 100 kA @ 480 V 3-pole, line protection ETU350, LSI, In=400 A overload protection Ir=160 A...400 A short-circuit protection Isd=1.5...10 x Ir, Ii=10 x In without connection circuit breaker 3VA6 UL Frame 400 breaking capacity class C 100 kA @ 480 V