MDSC503WEA, Cutler Hammer, Magnum DS, type MDSC, drawout mounted, double frame, 3P, 3PH, ABCABC phasing used in Magnum DS low voltage switchgear, 5000A, 600V, 100kA@600V, 40°C, bolt-on, complete with interchangeable Digitrip, LI - Long-Time and Instantaneous trip functions, load side lug terminals, thermal magnetic, low voltage power insulated case circuit breakers