circuit breaker VL400X UL; type LG (cat no. LLX3B600) 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 TM, LI TA=40°C In=< 600A, rated current II=2750...5500A short-circuit protection IR=600A ETU for line protection without connection accessories without auxiliary release without auxiliary/alarm switch