circuit breaker 3VA2 IEC frame 160 breaking capacity class M Icu=55kA @ 415V 3-pole, line protection ETU330, LIG, In=63A overload protection Ir=25A…63A short-circuit protection Ii=1.5…12 x In ground-fault protection Ig=0.25… 1 x In, tg=0.1/0.3s nut keeper kit