circuit breaker VL250 UL type FG (cat no. NFK3V100) non-interchangeable frame, with circuit breaker approval acc. to UL 489 standard breaking capacity 3-pole; NEMA rating 35KA@480V and 18KA@600/347V (molded case circuit breaker) Electronic Trip Unit ETU, LSIG TA=40°C 3 phases/4 lines In=100A, rated current ISD=1.5-10xIR, II=11xIN short-circuit protection IR=40-100A Electronic Trip Unit for line protection without connection accessories without auxiliary/alarm switch