MDN4083LEA0422NMNANENYMWX, Cutler Hammer, Magnum DS, type MDN, drawout mounted, narrow frame, 3P, 3PH, 800A, 400A current sensors and rating plugs, 600V, 42kA@600V, 40°C, bolt-on, manually operated, complete with factory installed 110-127Vac UVR, interchangeable Digitrip 220, LI - Long-Time and Instantaneous trip functions, operations counter, Kirk key interlock, load side lug terminals, solid state, low voltage power insulated case circuit breakers, shipped in drawout narrow cassettes, with shutters, pre-wired