circuit breaker VL400X UL; type LG (cat no. NLK3V600) non-interchangeable frame, with circuit breaker approval acc. to UL 489 standard breaking capacity 3-pole, NEMA rating 35kA/480V and 18kA/600V (molded case circuit breaker) trip unit ETU, LSIG TA=40°C 3 phases/4 lines In=600A, rated current ISD=1.5 to 9xIR, II=10xIN short-circuit protection IR=200-600A ETU for line protection without connection accessories without auxiliary release without auxiliary/alarm switch