circuit breaker 3VA6 UL Frame 600 breaking capacity class L 150 kA @ 480 V 4-pole, line protection ETU350, LSI, In=400 A overload protection, 100% rated Ir=160 A...400 A short-circuit protection Isd=1.5...10 x Ir, Ii=12 x In neutral conductor protection adjustable (OFF, 50%, 100%) without connection