Square D LJM36400U31X Circuit Breaker

The Square D by Schneider Electric PowerPact L molded‑case circuit breaker LJM36400U31X provides 400 A, three‑pole protection rated for 600 V AC, with a 25 kA short‑circuit interrupting capacity and lug terminations. It houses a MicroLogic 3.3 electronic trip unit for long‑time and instantaneous protection, enabling coordinated protection in industrial power distribution. This device is UL 489 listed and also CSA, NEMA, IEC, and CE certified, and is suitable as a main disconnect in control panels or as feeder protection in power distribution panels. Part of the PowerPact L family, the LJM36400U31X uses line and load lug terminals for straightforward field wiring and is designed for industrial applications requiring reliable overload and short‑circuit protection.