Square D LA36300 - 300 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D LA36300—a robust 300 A, 600 V, 3-pole plug-in molded case circuit breaker designed to safeguard panelboards and loadcenters with precision and ease. Built for dependable branch circuit overcurrent and short-circuit protection, it delivers reliable performance where uptime matters most.

Fast, hassle-free plug-in installation — designed for quick insertion and straightforward replacement, this breaker minimizes downtime during panel maintenance or upgrades. The plug-in mounting style ensures a secure fit in compatible Square D panelboards, helping you keep electrical projects moving smoothly.

Thermal-magnetic trip unit for stable protection — the integrated thermal-magnetic mechanism offers stable, repeatable response to overloads and short circuits. This means fewer nuisance trips and consistent coordination with downstream devices, protecting wiring, motors, and other equipment without unnecessary shutdowns.

OEM-compatible for seamless integration — engineered to fit matching Square D OEM load centers and panelboards, ensuring a clean, reliable connection in standard electrical layouts.

Versatile for multiple sectors — ideal in residential, commercial, and light industrial settings where three-pole protection is required for 3-phase circuits, motor loads, or HVAC equipment. This breaker is a practical choice for distributors, installers, and facility managers seeking dependable protection in a compact, plug-in package.

Key specifications at a glance

• Amperage rating: 300 A
• Voltage rating: 600 V
• Poles: 3
• Mounting style: Plug-in
• Type: Thermal-magnetic molded case circuit breaker
• Manufacturer: Square D
• Part number: LA36300

Use cases and deployment scenarios

Designed for panelboards and load centers requiring reliable branch circuit overcurrent and short-circuit protection, the LA36300’s 3‑pole configuration is well-suited for 3-phase systems common in commercial and light industrial environments. It’s a practical choice for protecting feeders to motors, compressors, and other equipment where dependable interruption safeguards both conductors and connected devices. Its plug-in form factor makes it a convenient option for routine replacements and panel upgrades, helping facilities minimize downtime.

Practical tips for installation and safe operation

• Verify panel compatibility: confirm the panelboard accepts Square D plug-in molded case breakers of the LA family.
• Match the amperage and pole count to your circuit requirements (300 A, 3-pole in this case) to ensure proper protection and coordination.
• Power down the system and follow all safety guidelines before installation or replacement.
• Ensure a secure, fully seated plug-in connection to maintain reliable protection and minimize contact resistance.

Choose the Square D LA36300 for a dependable, OEM-compatible solution that delivers precise protection, quick installation, and versatile performance across residential, commercial, and light industrial applications. Available from AmpState, this breaker is engineered to keep your electrical systems safeguarded with clarity and confidence.