Circuit breaker VL250 UL Type FG (CAT NO. NFK3B175) non-interchangeable frame, with approval circuit breaker according to UL 489 Standard switching capacity 3-pole; NEMA rating 35 kA @ 480 V and 18 kA @ 600/347 V (molded case circuit breaker) Overcurrent release TM, LI TU=40 °C In=175 A, Rated current II=1000...2000 A Short-circuit protection Ir=175 A overcurrent release for system protection without connection accessories without auxiliary release Auxiliary switch mounting kit 2 AUX (1 NO + 1 NC)