SEF364000LSES1A8, Schneider Electric / Square D, SE Series, type SEF, 3P, 3PH, 4000A, 600V, 100kA@480V, bolt-on, complete with Micrologic Series B trip device, LS - Long-Time and Short-Time trip functions, solid state protection, electrically operated complete with 120VAC spring charging motor, shunt closing coil & shunt trip along with 4A4B with 1N.O./N.C. AC rated auxiliary switch with bell alarm, insulated case circuit breakers, these breakers are now obsolete; however, we do still stock them