Square D | LAP364001027 | Circuit Breaker | 400A | 3-Pole | 600V

When your panel demands serious current-handling and dependable protection, the Square D LAP364001027 circuit breaker is engineered to perform. Designed for high-load environments, this 400A, 3-pole unit operates up to 600V, making it a reliable choice for commercial and industrial power distribution where uptime matters.

Key specifications

• Amperage: 400A
• Poles: 3-Pole
• Voltage rating: 600V
• Part number: LAP364001027
• Intent: suitable for maintenance, retrofit, and replacement where matching specs are required

Why this Square D breaker stands out

• Exact compatibility for your retrofit or replacement projects. The LAP364001027 designation is the best reference to ensure the new unit matches your existing configuration and ratings.
• High-current resilience. With a 400A capacity, this three-pole breaker provides robust protection for multi-line feeders and large loads, helping prevent nuisance trips on demanding equipment.
• Versatile installation alignment. Suitable for maintenance planning, panel upgrades, and replacements across a range of commercial and industrial setups that require a 600V, 3-pole solution.
• Clear documentation and traceability. The part number serves as the definitive reference for compatibility checks and ordering, reducing guesswork in inventory management.

Ideal use cases and scenarios

• Upgrading aging electrical panels in manufacturing lines that require reliable 400A protection.
• Replacing a failed unit within a 600V distribution system where a precise 3-pole configuration is needed.
• Retrofits in facilities undergoing power distribution redesign, ensuring continuity with existing Square D equipment.
• Spare parts for preventative maintenance programs that prioritize matching the exact specifications of installed breakers.

Fit, compatibility, and ordering tips

Before purchasing, confirm fit and ratings against your panel’s documentation. The LAP364001027 part number is the strongest reference for ensuring compatibility with your Square D installation. When in doubt, cross-check the panel’s catalog number, the required voltage (600V), and the current rating (400A) to ensure a seamless replacement or retrofit without altering the electrical characteristics of the system.

This 400A, 3-pole, 600V circuit breaker from Square D is a purpose-built solution for robust, reliable protection in demanding environments. By aligning the exact specifications with your existing hardware, you can maintain safe operation, reduce downtime, and extend the life of your power distribution infrastructure.