MDN4083LEA0422NMNNNENKNPX, 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 interchangeable Digitrip 220, LI - Long-Time and Instantaneous trip functions, load side lug terminals, kirk keylock, solid state, low voltage power insulated case circuit breakers, shipped as drawout ACB in narrow cassette, no shutters and pre-wired