circuit breaker 3VA2 IEC Frame 1000 breaking capacity class H Icu=85 kA @ 415 V 3-pole, line protection ETU330, LIG, In=800 A overload protection Ir=320 A...800 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