Square D | LAP36400V | Circuit Breaker | 400A | 3-Pole | 36400V

Meet the Square D LAP36400V Circuit Breaker — a robust, high-capacity protection device designed for demanding electrical systems. With a 400 A rating and a 3-pole configuration, this breaker is built to safeguard three-phase power distribution in industrial and commercial settings where reliability isn’t negotiable.

This unit is specifically suited for maintenance, retrofit, and replacement projects where exact specifications matter. The part number LAP36400V serves as the best reference for compatibility, and you should confirm fit and ratings before ordering to ensure seamless integration with your panel or switchgear.

Key specifications

• Amperage: 400 A
• Poles: 3-Pole
• Voltage rating: 36,400 V (36.4 kV)
• Part number: LAP36400V

Why this breaker stands out

Designed to align with Square D protection schemes, this LAP36400V minimizes compatibility risk in your existing three-phase infrastructure. Its precise specifications help maintain coordination with upstream and downstream protection devices, reducing miscoordination and unnecessary trips. By sticking to the exact part number, you’re choosing a solution engineered for reliable performance in high-demand environments.

Ideal use cases

• Retrofits to upgrade protection in legacy Square D installations
• Maintenance replacements in 3-phase distribution panels and switchgear
• New builds or upgrades requiring 400 A, 3-pole protection for 36.4 kV systems

Practical guidance for procurement and installation

Before purchase, verify that LAP36400V fits your panel’s specifications and that the rating matches the circuit you intend to protect. Maintain a copy of the equipment data sheet and ensure wiring, trip settings, and mounting hardware align with the device requirements. This proactive check helps prevent delays and ensures protective performance from day one.

What to expect in service

Once installed, the LAP36400V delivers dependable overcurrent protection for critical three-phase circuits, helping prevent equipment damage, minimize downtime, and sustain power quality across your distribution network. It’s a purpose-built component for professionals who require precise, reliable protection in high-voltage, high-current environments.