Circuit breaker 3VA2 IEC Frame 100 breaking capacity class M Icu=55 kA @ 415 V 4-pole, line protection ETU350, LSI, In=100 A overload protection Ir=40 A...100 A short-circuit protection Isd=1.5...10 x Ir, Ii=12 x In neutral conductor protection adjustable (OFF, 50%, 100%) nut keeper kit