MN403PANNSNNNXNC, Cutler Hammer, Magnum DS, circuit breaker part, carriages/ cells / cassettes, basic cassettes without stab kit for drawout circuit breakers, cassette standard features include an arc hood, provisions for secondary terminal blocks including wiring, and a cell rejection kit, shutters installed, door escutcheon not included, unwired, suitable for double frame Magnum DS 3-pole, 4000A MDS frame low voltage air circuit breakers