MDN4083LEA0322NMNNNENKMAX, Cutler Hammer, Magnum DS, type MDN, drawout mounted, narrow frame, 3P, 3PH, 800A, 300A 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, lower terminal voltage connection, kirk keylock, solid state, low voltage power insulated case circuit breakers, shipped as drawout without cassette and unwired