MDS850, Cutler Hammer, Magnum DS, type MDS, drawout or fixed mounted, double frame, 3P, 3PH, 5000A, 600V, 85kA@600V, current limiting, 40°C, bolt-on, complete with interchangeable Digitrip, LI - Long-Time and Instantaneous trip functions, load side lug terminals, solid state, low voltage power insulated case circuit breakers