Schneider Electric LAP36400MBU Circuit Breaker

Schneider Electric's Square D LAP36400MBU is a 400 A, three-pole molded‑case circuit breaker designed for 600 V AC service, built to protect feeders and main circuits in commercial and light-industrial panels with a compact, field-installable footprint. It includes thermal‑magnetic protection with a long‑time and instantaneous trip, a short‑handle operator for clear OFF/ON indication, and load‑side lug terminals combined with bottom‑feed lugs, enabling reliable wiring and secure mount in Square D enclosure systems. The device is rated for 22 kA interrupting capacity at 600 VAC (with some catalogs listing up to 30 kA at 480 VAC), reflecting its suitability for high‑fault‑current environments while maintaining coordination with downstream protection devices. As part of the PowerPact LA/LAP family, the LAP36400MBU is UL Listed and designed for use as a main breaker or feeder in Schneider Electric distribution gear, making it a common choice for industrial and multi‑tenant commercial installations that require robust fault protection.