Square D | LE36400LI | Circuit Breaker | 400A | 3-Pole | 600V | Plug-In

Meet the Square D LE36400LI circuit breaker—a dependable, high-capacity protection solution designed for demanding 3‑phase power systems. With a 400A rating across 3 poles and a 600V operating range, this plug‑in unit is built to safeguard large feeders and heavy motor loads in industrial and commercial environments. When retrofit, maintenance, or replacement is on the agenda, this breaker delivers a precise match in compatible Square D panels, helping you minimize downtime and keep critical equipment online.

Key specifications

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V
• Installation: Plug-In

Why choose the LE36400LI for your system

• Plug-in convenience enables quicker swaps and reductions in service interruption on compatible panels, making repairs and upgrades more efficient.
• High-current protection supports substantial 3‑phase loads, ideal for large motors, feeders, and distribution circuits without compromising safety.
• Reliability from a trusted brand Square D is renowned for durable performance in demanding electrical environments, helping to protect critical infrastructure over the long term.
• Consistent compatibility designed to align with Square D panel configurations, ensuring a smoother installation experience when upgrading or replacing aging components.

Important compatibility note

Before ordering, confirm fit and ratings for your specific panel. The part number LE36400LI is the most reliable reference for compatibility, ensuring the right fit for your 400A, 3‑pole, 600V, plug‑in application.

Practical use cases

• Upgrading large feeders in industrial distribution panels where 3‑phase power protection is essential
• Retrofit projects replacing aging or failing breakers in commercial facilities with high current demands
• Maintenance cycles that require quick, reliable replacement without extensive panel modification