Square D LE36400LSG Molded Case Circuit Breaker

Square D by Schneider Electric LE36400LSG molded‑case circuit breaker is a 3‑pole, 400 A frame designed for 600 V AC service. It integrates a Micrologic LSIG trip unit (Long‑Time, Short‑Time, Instantaneous, and Ground Fault protection) with a RatingPlug set to 100% to deliver full current rating and precise protection coordination for large feeders and motor circuits. The LE36400LSG uses an I‑Line style plug‑in mounting on the LE frame and provides a 65 kA interrupting capacity at 480 V, making it suitable for demanding industrial distribution applications while remaining compatible with Square D LE‑series panels. In everyday terms, it protects high‑load 3‑phase circuits in commercial or industrial environments, limiting fault currents and enabling selective tripping to minimize downtime.