Square D LGA36250U31X - 250 A, 3-Pole Plug-In Circuit Breaker | AmpState

The Square D LGA36250U31X is a 250 A, 3-pole plug-in molded case circuit breaker built to shield panelboards and load centers from overcurrent and short-circuit events. Engineered for fast, predictable protection in demanding environments, this unit is a practical, high-current solution for modern electrical installations in residential, commercial, and light industrial settings.

Why this breaker stands out

• Fast plug-in connection for quick, tool-free installation or swift replacement, minimizing downtime during panel upgrades or service calls.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining overload (thermal) sensing with magnetic short-circuit detection, helping to reduce nuisance trips while safeguarding circuits.
• Three-pole design ideally suited for 3-phase panelboards and feeders, enabling efficient protection of multi-phase electrical systems.
• OEM compatibility designed to integrate with matching Square D OEM load centers and panelboards for reliable performance and consistent trip characteristics.
• Rugged, molded-case construction built to withstand the demands of both new installations and service environments in residential, commercial, and light industrial applications.

Who is this for?

• Electrical contractors upgrading or expanding panelboards that require a robust 250 A, 3-pole protection solution.
• Facility managers seeking durable, high-current protection for main feeders or large branch circuits in commercial or light industrial spaces.
• Home installers working on large subpanels or multi-wire branch circuits that demand reliable 3-phase protection and quick swap-ins.

Key applications and use cases

Use the Square D LGA36250U31X as the primary overcurrent and short-circuit protection device in panelboards and load centers designed for plug-in breakers. Its 250 A rating makes it well-suited for feeder protection, subpanel distribution, and scenarios where minimal downtime matters during replacements or upgrades. In environments that demand quick serviceability, the plug-in design simplifies maintenance without compromising safety or performance.

Technical at a glance

• Manufacturer: Square D
• Part number: LGA36250U31X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 250 A
• Poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection
• Compatibility: OEM load centers and panelboards from Square D

For projects requiring dependable, high-current protection with straightforward installation, the Square D LGA36250U31X delivers precise, reliable performance built to align with standard Square D panel systems. It’s a strategic choice for reliable power distribution in a wide range of electrical environments.