circuit breaker VL250 UL type FG (cat no. HFK3A250) non-interchangeable frame, with circuit breaker approval acc. to UL 489 high breaking capacity 3-pole; NEMA rating 65KA@480V and 18KA@600/347V (molded case circuit breaker) Electronic Trip Unit LCD ETU, LI/LS/LSI TA=40°C In=250A, rated current ISD=1.25-10xIR, II=11X in short-circuit protection IR=70-250A Electronic Trip Unit for line protection without connection accessories without auxiliary/alarm switch