Square D QO380 - 80 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D QO380 — a dependable 80 A, 240 V, 3-pole plug-in molded case circuit breaker built to shield your panelboards and load centers from overcurrent and short-circuit events. Its plug-in design means faster installation and easier replacements, so downtime is minimized and reliability stays strong.

• Fast plug-in connection: Swap or install with minimal effort in compatible panels—no complex wiring or loose lugs, just a secure, reliable connection.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection for both overloads (thermal) and short circuits (magnetic), helping prevent nuisance trips and protecting equipment.
• 3-pole, 80 A, 240 V: Ideal for three-phase or multi-wire circuits in residential, commercial, and light industrial applications, providing coordinated protection where you need it.
• OEM-compatible mounting: Designed to work with matching Square D OEM load centers and panelboards for seamless fit and dependable performance.

Who should consider the QO380? It’s well suited for electrical professionals and system operators looking for a reliable plug-in breaker that fits standard Square D panel architectures. Use it in panelboards and load centers that require robust branch-circuit protection for 80-amp feeders, multi-wire branches, or 3-phase distribution in homes, offices, workshops, or light manufacturing environments.

Why this breaker matters in your electrical system

• The plug-in format minimizes installation time and simplifies future maintenance or panel upgrades.
• The thermal-magnetic trip ensures fast response to short circuits while preventing unnecessary trips from normal load fluctuations.
• Being part of the Square D QO family, it aligns with common panelboard designs, making substitution and compatibility straightforward for existing installations.

Technical snapshot

• Manufacturer: Square D
• Part Number: QO380
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 80 A
• Voltage Rating: 240 V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Square D QO380 for a reliable, plug-in solution that combines quick installation with dependable protection. It’s a practical, purpose-built choice for maintaining safe, efficient electrical systems across a range of environments.