Schneider Electric MH364501253 Circuit Breaker

Schneider Electric's Square D MH364501253 is a three-pole molded‑case circuit breaker in the MH family, rated for 450 A at 600 V. Designed for use in Square D panelboards, it employs I‑Line plug‑in construction for quick, field‑install when paired with compatible MH enclosures. The unit includes an auxiliary switch (1A1B) to provide remote signaling or interlock functionality without interrupting the main current path. With its 3P configuration, all three phases are simultaneously disconnected when tripped, delivering reliable protection for 3‑phase feeders and motor circuits in commercial or light‑industrial installations that require durable overload and short‑circuit protection at up to 600 V. Typical applications include distribution panels and equipment feeders where a rugged 450 A, 600 V breaker with an auxiliary contact is advantageous for status monitoring and control.