Square D MGN61331 Molded Case Circuit Breaker

Schneider Electric’s Square D Multi9 MGN61331 is a three‑pole miniature circuit breaker (MCB) in the C60 frame, rated for 15 A on 480Y/277 V four‑wire three‑phase systems. This UL489‑listed device delivers a 10 kA short‑circuit interrupting capacity and uses a C‑curve trip characteristic for general protection against overcurrent with moderate inrush. Designed for plug‑in, DIN‑rail mounting in compatible Square D/Multi9 distribution panels and enclosures, the MGN61331 is identified by model number MGN61331 within the Multi9 lineup, ensuring compatibility with other MGN series breakers and standard accessories. Its 3P configuration provides reliable protection for branch circuits in commercial and light industrial installations that operate at 480Y/277 V, making it suitable for protecting feeders, lighting and control circuits within modern low‑voltage power distribution networks. The unit’s molded‑case design and standardized mounting support quick replacement in compatible boards, backed by Schneider Electric’s robust Square D ecosystem for consistent performance across the distribution system.