circuit breaker 3VA1 IEC Frame 160 breaking capacity class M Icu=55 kA @ 415 V 3-pole, line protection TM220, ATFM, In=80 A overload protection Ir=56 A...80 A short-circuit protection Ii=10 x In terminal connection circuit breaker 3VA1 IEC Frame 160 breaking capacity class M Icu=55 kA @ 415 V 2 auxiliary switches HQ