circuit breaker VL400X UL; type LG (cat no. LLK3W400) non-interchangeable frame, with circuit breaker approval acc. to UL 489 very high breaking capacity 3-pole, NEMA rating 100kA/480V and 18kA/600V (molded case circuit breaker) trip unit ETU, LIG TA=40°C 3 phases/4 lines In=400A, rated current II=1.25 to 11xIN, short-circuit protection IR=150-400A ETU for line protection without connection accessories without auxiliary release without auxiliary/alarm switch