KD3100, 3 Pole, 100 Amp, Moulded case circuit breaker, Complete, K-Frame, 600V, Thermal magnetic, Cutler Hammer, Standard interrupting capacity, 25kAIC @ 600V, 35kAIC @ 480V, 65kAIC @ 240V.  KT3100T trip unit installed.  TA300K line and load lugs installed.  Factory new.

Can build out of components: KD3400F, KT3100T, TA300K qty 6

Alternative trip units: KES3400LS, KES3400LSI

Alternative lugs (individual lugs): TA300K, TA350K