Square D | LDA36400U44X | Circuit Breaker | 3-Pole | Plug-In

Introducing Square D LDA36400U44X, a 3-Pole Plug-In circuit breaker designed for maintenance, retrofit, and replacement projects where exact compatibility matters. This line-certified part is identified by the catalog number LDA36400U44X and is built for quick, reliable plug-in installation in compatible panels.

• 3-Pole design supports three-phase protection, making it suitable for multi-phase electrical systems that require balanced, coordinated interrupting capability.
• Plug-In format enables faster serviceability and streamlined swaps during maintenance or panel upgrades, reducing downtime and simplifying field work.
• Catalog reference LDA36400U44X serves as the most reliable compatibility check—use this part number to match the exact specifications your panel requires.
• Application fit ideal for maintenance, retrofit, and replacement scenarios where matching specs is essential for safe, compliant operation.

How to ensure you get the right part

• Before ordering, confirm fit and ratings match your panel and system requirements. The part number is the best reference for compatibility, so cross-check the LDA36400U44X catalog number with your panel’s documentation.
• Consider your installation context—use this plug-in 3-pole breaker for projects aiming to preserve existing wiring schemes while upgrading protection components.

Ideal users and practical scenarios

• Electrical technicians performing routine maintenance on legacy Square D installations.
• Facilities teams conducting panel retrofits to improve protection or support new loads.
• Maintenance crews replacing worn or failed breakers in compatible 3-phase systems, minimizing downtime with a straightforward plug-in replacement.

Choose the Square D LDA36400U44X when you need a precise, compatible 3-Pole Plug-In circuit breaker that aligns with your panel’s specs and delivers dependable protection where it matters most. This part is positioned for reliable service in maintenance, retrofit, and replacement workflows, helping you keep systems running smoothly without guessing at compatibility.