circuit breaker 3VA2 IEC Frame 1000 breaking capacity class M Icu=55 kA @ 415 V 3-pole, line protection ETU320, LI, In=1000 A overload protection Ir=400 A...1000 A short-circuit protection Ii=1.5...10 x In nut keeper kit shunt trip (STL) 110-127 V DC, AC 50/60 Hz 2 auxiliary switches HQ 1 trip alarm switch HQ