Schneider Electric LAP36400MB Circuit Breaker

Schneider Electric's Square D LAP36400MB is a 400 A, 3-pole molded-case circuit breaker (MCCB) designed to protect feeders and main distribution in 600 VAC electrical systems. It provides thermal-magnetic protection with long-time and instantaneous trip functions, and includes bottom feed lugs and load-side lug terminals for straightforward wiring, with bolt-on mounting for panel integration. Rated for 600 VAC operation, the LAP36400MB lists a 22 kA interrupting capacity at 600 VAC and a 250 VDC rating, enabling protection across AC and DC portions of a power system. This device is part of the LAP family from Square D/Schneider Electric and is typically used as the main breaker or feeder breaker in commercial and industrial distribution panels. The thermal-magnetic trip ensures selective protection and helps prevent nuisance trips by coordinating with upstream protective devices in a properly designed power distribution scheme.