MDSC503HEA, Cutler Hammer, Magnum DS, type MDSC, double frame, fixed mounted, horizontal terminal pads for bus connections, 3P, 3PH, ABCABC phasing use in Cutler Hammer Magnum DS low voltage switchgear, 5000A, 600V, 100kA@600V, 40°C, bolt-on, LI - Long-Time and Instantaneous trip functions, load side lug terminals, solid state, low voltage power insulated case circuit breakers