circuit breaker 3VA6 UL Frame 400 breaking capacity class E 200 kA @ 480 V 4-pole, line protection ETU350, LSI, In=250 A overload protection Ir=100 A ... 250 A short-circuit protection Isd=1.5... 10 x Ir, Ii=12 x In neutral conductor protection adjustable (OFF, 50%, 100%) without connection