MDSC4N3HEA, Cutler Hammer, Magnum DS, type MDSC, double frame, fixed mounted, horizontal terminal pads for bus connections, 3P, 3PH, AABBCC phasing use in Pow-R-Line C switchboards, 4000A, 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