Circuit breaker 3VA2 IEC Frame 160 breaking capacity class L Icu=150 kA @ 415 V 3-pole, line protection ETU550, LSI, In=160 A overload protection Ir=63 A...160 A short-circuit protection Isd=0.6..10x In, Ii=1.5..10x In neutral conductor protection optionally with external current transformer, up to 160% terminal connection