MWI8124LEA, Cutler Hammer, Magnum, type MWI, drawout mounted, standard frame, 4P, 3PH, 1250A, 690V, 85kA@690V, bolt-on, NABC phasing, complete with interchangeable Digitrip RMS with possible LI/LSI/LSIG/LSIA trip functions, load side lug terminals, solid state electronic, IEC low voltage power air circuit breakers