circuit breaker 3VA2 IEC Frame 250 breaking capacity class H Icu=85 kA @ 415 V 4-pole, line protection ETU350, LSI, In=160 A overload protection Ir=63 A...160 A short-circuit protection Isd=1.5...10 x Ir, Ii=12 x In neutral conductor protection adjustable (OFF, 50%, 100%) nut keeper kit circuit breaker 3VA2 IEC Frame 250 shunt trip left 208-277 V AC 50/60 Hz 2 auxiliary switches HP