Schneider Electric MHL3640025DC1679 Circuit Breaker

Schneider Electric's Square D MHL3640025DC1679 is a 3‑pole molded‑case circuit breaker from the MHL DC family, rated for 400 A at 600 V DC. This 3P device is built for DC distribution with a thermal‑magnetic trip mechanism and a short‑circuit interrupting capacity of 20 kA at 500 V, making it suitable for fast, reliable disconnection in high‑current circuits. It features feed‑through connections with line and load lug terminals and comes with an auxiliary contact and undervoltage trip option, delivering long‑time and instantaneous protection as part of a non‑interchangeable LI trip system. The frame type is M, and the unit weighs approximately 55 lb, reflecting its rugged construction for demanding DC applications. As part of Square D, a Schneider Electric brand, the MHL3640025DC1679 is DC‑rated for high‑current feeders in 600 V class systems and can integrate with standard MHL accessories to support signaling and voltage‑based control in centralized DC power distributions.