Westinghouse Cutler-Hammer HNB31000T Trip Unit is an NB-frame, Type NB HNB 1000-amp trip unit designed for N-frame circuit breakers. It carries a 1000 A rating, serving as the protective trip component within compatible Westinghouse Cutler-Hammer NB-frame devices. Intended for use with N-frame NB HNB circuit breakers that accept this trip unit.
