Square D | LGN36400U31X | Circuit Breaker | 3-Pole

Meet the Square D LGN36400U31X 3-Pole Circuit Breaker—built to protect 3-phase electrical systems with dependable, in-field reliability. This unit is purpose-built for maintenance, retrofit, and replacement projects where matching specifications matters, ensuring your panel continues to operate safely and efficiently.

Why this 3-Pole breaker stands out

• Three-pole design tailored for 3-phase circuits, delivering coordinated protection across all phases in commercial and industrial applications.
• Authentic Square D component, designed to harmonize with compatible panels and maintain system integrity during upgrades or service work.
• Focused on practicality: ideal for ongoing maintenance, panel retrofits, or field replacements where exact part compatibility is essential.

How to use it effectively

• Maintenance: Replace worn or failed breakers to restore reliable circuit protection without invasive panel changes.
• Retrofit: Upgrade aging infrastructure by selecting a like-for-like model that preserves protection schemes and labeling consistency.
• Replacement planning: Keep LGN36400U31X on hand as a ready-to-install option for scheduled downtime or emergency scenarios.

Compatibility and installation notes

Before ordering, verify that the panel specifications and current ratings align with this breaker. The LGN36400U31X part number is the most precise reference for compatibility—use it to confirm fit, ratings, and terminal configuration with your specific Square D panel.

Specifications at a glance

• Poles: 3-Pole
• Brand: Square D
• Part: LGN36400U31X

Why choose this model for your project

If your goal is a straightforward, reliable replacement or retrofit that preserves the protection strategy of your existing system, this 3-Pole Square D breaker offers a precise, standards-aligned option. It’s designed to integrate smoothly with compatible panels, minimize downtime, and support ongoing electrical safety and performance in demanding environments.