Square D HLA36100U31X - 100 A, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D HLA36100U31X — a 100 A, 3-pole plug-in molded case circuit breaker designed to protect your essential branch circuits in panelboards and load centers. Built for quick installs and dependable performance, this unit is a trusted choice for professional electrical protection in today’s residential, commercial, and light industrial settings.

• 100 A, 3-pole — provides robust protection for large multi‑wire and three‑phase circuits, helping prevent damage from overloads and faults.
• Plug-in molded case — delivers fast, straightforward installation and easy replacement when service upgrades or maintenance are needed.
• Thermal-magnetic trip unit — combines reliable overload protection with rapid short‑circuit interruption for stable, repeatable protection performance.
• OEM compatibility — designed to pair with matching Square D OEM load centers and panelboards for a precise fit and proven reliability.
• Versatile applications — ideal for residential, commercial, and light industrial environments where dependable overcurrent protection is critical.

Why this breaker matters for your electrical system

The HLA36100U31X employs a thermal-magnetic trip mechanism that reacts to sustained overloads and sudden faults, interrupting power quickly to minimize damage and downtime. The 3‑pole configuration ensures all conductors in the protected circuit are simultaneously safeguarded, which is essential for balanced protection in 3‑phase or large single‑phase loads. The plug‑in design minimizes service time during replacements, keeping panels online with minimal disruption.

Ideal use cases

• Upgrading panel capacity in commercial spaces such as offices, retailers, or small factories where reliable 3‑pole protection is required.
• Replacing a failed 3‑pole breaker in residential or light industrial panelboards to restore comprehensive circuit protection quickly.
• Protecting main feeders and multi‑wire branch circuits in load centers where fast, predictable tripping is essential for safety and uptime.

Technical snapshot

• Manufacturer: Square D
• Part Number: HLA36100U31X
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

For authentic Square D protection you can rely on, AmpState provides genuine components that fit seamlessly with your panelboard or load center. The HLA36100U31X is a purpose-built solution for fast, reliable circuit protection where it matters most.