MDN4083LEA0522NMNG4ECKMSX, Cutler Hammer, Magnum DS, type MDN, drawout mounted, narrow frame with factory installed block close PB metal frame padlockable pushbutton cover, 3P, 3PH, 800A, 500A current sensors and rating plugs, 600V, 42kA@600V, 40°C, bolt-on, manually operated, complete with factory installed 32Vdc UVR, interchangeable Digitrip 220, LI - Long-Time and Instantaneous trip functions, Kirk keylock, load side lug terminals & 4A/4B auxiliary switch, solid state, low voltage power insulated case circuit breakers, shipped in drawout narrow cassettes, with shutters, unwired