MDN4083LEA0422NMNG4YCKCAX, Cutler Hammer, Magnum DS, type MDN, drawout mounted, narrow frame with factory installed block close PB metal frame padlockable pushbutton cover, 3P, 3PH, 800A, 400A 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, 4A/4B auxiliary switch, latch check switch for external wiring, load side lug terminals, mechanical trip indicator, OTS switch & kirk keylock, solid state, low voltage power insulated case circuit breakers