Square D LGP36400CU31X 400A 3P 600V Circuit Breaker | AmpState

Meet the Square D LGP36400CU31X — a robust 400 A, 3-pole circuit breaker engineered for reliable protection in panelboards, load centers, and broader electrical distribution setups. Designed for maintenance teams, panel builders, and inventory managers who demand an exact part-number match, this unit is a direct-fit solution that minimizes downtime and installation guesswork.

Key specifications

• Manufacturer: Square D
• Part Number: LGP36400CU31X
• Product Type: Circuit Breaker
• Amperage: 400 A
• Poles: 3
• Voltage: 600 V
• Applications: Panelboards, load centers, and electrical distribution networks
• Availability: Available from AmpState

Why this 3P 400A 600V breaker stands out

• Direct part-number match: Specifically chosen for Square D systems, ensuring compatibility with existing LGP-series panel equipment without modification.
• High-current reliability: 400 A rating accommodates heavy feeders and main circuits, supporting demanding commercial and light-industrial applications.
• Three-pole design for balanced protection: Ideal for three-phase distribution where synchronized tripping and coordinated protection are essential.
• 600-volt capability: Suitable for higher-voltage panel configurations common in commercial spaces and distributed electrical systems.
• Logistics-friendly: A dependable spare for maintenance inventories, reducing downtime when replacements are needed quickly.

Use cases and practical scenarios

• Replacing a failed or de-energized breaker in Square D LGP-panel systems used in manufacturing floors, data centers, or commercial facilities.
• Stocking a ready-to-go spare for panel builders who routinely assemble or retrofit electrical distributions.
• Situations where exact part-number compatibility matters for warranty, documentation, and cross-reference accuracy.
• Maintenance planning for systems with high-current feeders that require reliable, field-proven protection at 600 V.

Compatibility and procurement tips

To ensure a perfect fit, compare your current installation against the LGP36400CU31X specification: Square D, 400 A, 3-pole, 600 V, and intended for panelboards or load centers within an LGP-series distribution network. If you’re unsure about fit, AmpState offers expert assistance to confirm compatibility with your panel layout and service requirements.

Ready to secure dependable protection for your electrical distribution? AmpState makes the LGP36400CU31X available now. If you need help verifying compatibility or placing an order, send us a message and we’ll guide you to a seamless, direct-match solution.