Circuit breaker VL400N standard breaking capacity Icu=55kA, 415V AC 3 poles, protection of tripping installations at maximum current TM, LI In=400A, rated current IR=320...400A, overload protection II=2,000...4,000A, short circuit protection without auxiliary trip Auxiliary switch mounting kit 2 int. aux. (1 contact to close+1 contact to open)