MDN4083LEA04MTNMNNNENNNAX, Cutler Hammer, Magnum DS, type MDN, drawout mounted, narrow frame, 3P, 3PH, 800A, 400A current sensors and rating plugs, 600V, 42kA@600V, bolt-on, manually operated, complete with interchangeable Digitrip 520M, LSI - Long-Time, Short-Time and Instantaneous trip functions, 24/48Vdc trip unit power supply voltage, power relay module high load alarm, load side lug terminals, solid state electronic, low voltage power insulated case circuit breakers