HND63B900, 3 Pole, 900 Amp, Moulded case circuit breaker, ND-Frame, 600V, Thermal magnetic, Siemens, 50kAIC @ 600V, 65kAIC @ 480V, 100kAIC @ 240V.  Includes frame, trip unit, and line and load lugs.  Factory new.

Can build out of components: HND63F120, ND63T900, 3TA4N8500 qty 2