circuit breaker 3VA2 IEC frame 400 breaking capacity class H Icu=85kA @ 415V 4-pole, line protection ETU330, LIG, In=400A overload protection Ir=160A…400A short-circuit protection Ii=1.5…10 x In N conductor protection adjustable (OFF, 50%, 100%) ground-fault protection Ig=0.2…1 x In= tg=0.1/0.3s nut keeper kit