Square D LI36450 - 450 A, 3-Pole Plug-In Circuit Breaker | AmpState

Introducing the Square D LI36450, a robust 450A, 3-pole plug-in molded case circuit breaker designed to safeguard your most important electrical loads. Built for dependable branch circuit overcurrent and short-circuit protection, it thrives in panelboards and load centers across residential, commercial, and light industrial settings.

• Fast plug-in connection: Enjoy quick installation and effortless replacement, minimizing downtime during maintenance or panel upgrades.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by balancing thermal response to gradual overcurrents with instantaneous magnetic action for short circuits.
• OEM-compatible design: Precisely matched to the corresponding Square D load centers and panelboards for reliable fit and seamless electrical performance.
• Focused protection: Specifically engineered for branch circuit overcurrent and short-circuit protection, helping maintain system reliability in demanding environments.
• Plug-in mounting: A streamlined, service-friendly mounting style that supports rapid maintenance and easy succession in panel assemblies.

Use cases and ideal applications

Perfect for upgrading or expanding panel systems in residential service panels, retail spaces, small offices, and light industrial facilities. When you need a high-amperage, three-pole solution that slots into existing OEM setups without custom adapters, the LI36450 provides a straightforward, reliable path to protecting feeders and heavy-load circuits. It’s especially valuable in panelboard retrofits where downtime matters and compatibility with current gear is essential.

Compatibility and installation considerations

Designed to pair with matching Square D OEM load centers and panelboards, this plug-in breaker helps maintain code-compliant protection and predictable performance. For best results, confirm panel compatibility with the LI36450’s part number and ensure the installation is performed by a qualified electrician. The plug-in design simplifies swaps and upgrades, reducing installation time compared with more complex mounting options.

Technical snapshot

• Manufacturer: Square D
• Part Number: LI36450
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 450 A
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

When selecting a high-capacity, plug-in protection solution for panelboards and load centers, the Square D LI36450 offers a precise blend of rapid installation, reliable trip performance, and OEM-fit compatibility. Trust AmpState to provide authentic Square D components designed to keep your electrical systems protected and running smoothly.