Square D QOB280 - 80 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Square D QOB280 is a 2-pole bolt-on molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. With a precise balance of rugged construction and reliable protection, it’s a smart choice for residential, commercial, and light industrial electrical systems.

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection – engineered to stay solid under vibration and routine panel movements, helping maintain consistent electrical continuity.
• Thermal-magnetic trip unit for stable, repeatable protection – combines thermal and magnetic sensing to deliver accurate protection across a wide range of loads and fault conditions, minimizing nuisance trips while guarding against short circuits.
• OEM-compatible design – crafted to integrate smoothly with matching Square D load centers and panelboards, simplifying replacement and upgrades without compatibility concerns.
• 2-pole, 80A at 240V for reliable branch-circuit protection – suitable for safeguarding multi-wire branch circuits and essential electrical feeders in diverse environments.

Who benefits from the QOB280? Electricians, facilities managers, and property owners who need dependable routine protection for panelboards and load centers. It’s particularly well-suited for residential service panels, commercial distribution panels, and light industrial equipment racks where compact, robust protection is essential and panel space is at a premium.

Technical snapshot

• Manufacturer: Square D
• Part Number: QOB280
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 80A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases and scenarios

• Upgrade or replacement in residential panelboards where a reliable 80A, 240V two-pole breaker is required, ensuring continued protection for essential circuits.
• Protection of multi-wire branch circuits in small to mid-size commercial installations, where space-efficient, bolt-on mounting is advantageous.
• Light industrial panel configurations needing a stable, repeatable trip response to varying loads and fault conditions.

Why this breaker stands out

• Its bolt-on design provides a solid, vibration-resistant connection that helps maintain consistent electrical performance in real-world panel installations.
• The thermal-magnetic trip unit delivers dependable protection without drift across temperature changes and load swings, reducing the risk of nuisance trips while safeguarding equipment.
• Designed to align with Square D OEM panels, the QOB280 minimizes compatibility concerns and streamlines maintenance or future upgrades.

Choosing the Square D QOB280 means selecting a compact, reliable solution that protects your circuits today and simplifies future panel work. Built to meet the needs of professionals who demand precise protection and durable performance, this 80A, 240V, 2-pole bolt-on breaker is ready to power safer, more resilient electrical systems.