MDN4083LEA0122NKHK2ENNNAX, Cutler Hammer, Magnum DS, type MDN, drawout mounted, narrow frame, 3P, 3PH, 800A, 100A current sensors and rating plugs, 600V, 42kA@600V, 40°C, bolt-on, electrically operated with 48Vdc motor operator and 48Vdc spring release device (SRD), complete with factory installed 600Vac UVR & 2A/2B auxiliary switch, interchangeable Digitrip 220, LI - Long-Time and Instantaneous trip functions, load side lug terminals, solid state, low voltage power insulated case circuit breakers