circuit breaker 3VA2 IEC frame 100 breaking capacity class L Icu=150kA @ 415V 4-pole, line protection ETU350, LSI, In=100A overload protection Ir=40A…100A short-circuit protection Isd=1.5…10 x Ir, Ii=12 x In N conductor protection adjustable (OFF, 50%, 100%) nut keeper kit