circuit-breaker VL 400N standard breaking capacity Icu=55kA / 415 V AC 4 pole, line protection electronic trip unit LCD ETU40, LI/LS/LSI In=315A, rated current ir=128-315A, overload Isd=1,5to10xir, iI=11xin short-circuit N protected Shunt release 208...277 V AC Auxiliary switch mounting kit 2 AUX (1 NO + 1 NC)