circuit breaker VL400L very high breaking capacity Icu=100kA, 415V AC 3-pole, line protection Electronic Trip Unit ETU22, LSIG 3 phases/3 lines In=315A, rated current IR=128...315A, overload protection, ISD=1.5 to 10xIR, II=11xIN short-circuit protection without auxiliary release ETU communication-capable without auxiliary/alarm switch