Square D | MA364501021 | Circuit Breaker | 450A | 3-Pole | 600V

Meet the Square D MA364501021 circuit breaker, a purpose-built protection solution for demanding electrical systems. With a 450A rating, 3-pole configuration, and a 600V maximum, this unit is engineered to safeguard high-capacity, three-phase environments while keeping critical equipment running smoothly.

Designed for maintenance, retrofit, and replacement projects, the MA364501021 fits squarely into the Square D ecosystem. Use the part number MA364501021 as the authoritative reference to confirm compatibility with your panel or enclosure before ordering, ensuring a clean fit and proper electrical ratings.

• Amperage: 450A
• Poles: 3-Pole
• Voltage rating: 600V
• Best use: maintenance, retrofit, and replacement in compatible Square D installations
• Compatibility tip: verify the MA364501021 part number against your panel’s listing and catalog to avoid mismatches

Practical use cases span refreshing aging distribution panels, upgrading feeder protection in industrial equipment, or replacing a failed breaker in three-phase systems. Ideal environments include manufacturing floors, modular electrical infrastructures in data centers, and large commercial facilities where reliable current interruption and safe operation matter most.

What sets this breaker apart is its precise alignment with Square D standards, designed to integrate seamlessly with existing Square D panels and components. When selecting a replacement, prioritize matching the part number to your panel documentation and confirm the panel’s listing covers a 450A, 3-pole, 600V device to ensure ongoing compliance and safety.

If you’re aiming for dependable protection and straightforward compatibility in your high-capacity electrical system, the MA364501021 is structured to deliver consistent performance and peace of mind through every load cycle.