Square D | LA36400-BLACK | Circuit Breaker | 400A | 3-Pole | 600V

Square D LA36400-BLACK Circuit Breaker delivers rugged, reliable overcurrent protection for demanding 3‑phase electrical systems. With a 400A rating, 3 poles, and a 600V maximum, this device is built to handle industrial feeders, motor circuits, and service panels where stringent protection is essential.

Designed for maintenance, retrofit, or replacement projects, the LA36400-BLACK is a precise fit when your panel's catalog number aligns with the LA36400-BLACK. The product notes emphasize confirming fit and ratings before ordering, and that the part number is the best reference for compatibility. Rely on Square D's proven engineering to minimize downtime and keep critical loads protected.

• Amperage: 400 A
• Poles: 3-Pole (three-phase)
• Voltage: 600 V
• Type: Square D circuit breaker
• Applications: Ideal for industrial feeders, motor circuits, and retrofit projects
• Compatibility: Best reference is the part number LA36400-BLACK; verify fit and ratings before ordering

Why choose this model? It combines Square D reliability with a robust form factor suitable for challenging environments. It provides dependable tripping and interruption capabilities to protect expensive equipment, reduce arc-flash risk, and prevent cascading faults in demanding 3‑phase systems.

Ideal for electrical contractors, facilities managers, and industrial operators upgrading legacy panels or expanding capacity, this 400A, 3‑pole, 600V breaker is a practical, go-to choice when you need a precise match to your existing Square D infrastructure. If your project requires a direct replacement or a retrofit that preserves your panel's integrity, this LA36400-BLACK is ready to install where compatible.