circuit breaker 3VA2 IEC Frame 1000 breaking capacity class C Icu=110 kA @ 415 V 3-pole, motor protection ETU350M, LSI, In=630 A overload protection Ir=250 A...630 A short-circuit protection Isd=3...15 x Ir, Ii=15 x In nut keeper kit circuit breaker 3VA2 IEC Frame 1000 breaking capacity class C Icu=110 kA @ 415 V undervoltage release 208-230 V AC 50/60 Hz 2 auxiliary switches HP