Square D | MAF36400V | Circuit Breaker | 400A | 3-Pole | 36400V

Square D MAF36400V circuit breaker is a high-capacity, three-pole protection device engineered for demanding electrical systems. Designed for maintenance, retrofit, and replacement projects, it delivers reliable performance whenever exact specifications matter.

Meet the needs of large, three-phase power networks with trusted Square D reliability. The MAF36400V supports a robust 400 A load with a 3-Pole configuration and a voltage rating of 36,400 V, making it suitable for industrial distributions, manufacturing floors, and facility power systems that require precise, dependable protection at high currents and voltages.

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 36,400 V

Why choose this model? The MAF36400V is chosen when compatibility with existing Square D panels and legacy gear is a must. Its part number-based matching ensures you align with the exact enclosure, trip characteristics, and mounting footprint required for your system. This makes it an ideal fit for retrofit projects or replacements where you cannot compromise on specifications.

Ideal use cases include upgrading or restoring protection in large three-phase distribution, feeders, or service entrances within industrial facilities. It’s a dependable option for equipment refurbishments, where seamless electrical continuity and consistent protection are critical to minimize downtime and maintain safety standards.

Important compatibility note: Confirm fit and ratings before ordering. The part number MAF36400V is the best reference for ensuring a precise match to your enclosure and system requirements.

Practical tips for installation and upkeep: work with a licensed electrician, follow applicable electrical codes, and store the unit in a clean, dry environment prior to installation. By adhering to these practices, you’ll maximize the lifespan and reliability of this high-capacity Square D circuit breaker.