Circuit breaker 3VA2 IEC Frame 250 breaking capacity class C Icu=110 kA @ 415 V 3-pole, line protection ETU330, LIG, In=250 A overload protection Ir=100 A...250 A short-circuit protection Ii=1.5...10 x In ground-fault protection Ig=0.2...1 x In, tg=0.1/0.3s nut keeper kit