circuit breaker 3VA2 IEC Frame 100 breaking capacity class M Icu=55 kA @ 415 V 3-pole, line protection ETU320, LI, In=63 A overload protection Ir=25 A...63 A short-circuit protection Ii=1.5...12 x In nut keeper kit shunt trip (STL) 220-250 V DC, 208-277 V AC