Square D QOB125GFI - 25 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Designed for dependable branch circuit protection, the Square D QOB125GFI is a 25A, 120V, 1-pole bolt-on molded case circuit breaker built to safeguard panelboards and load centers in residential, commercial, and light industrial settings. This unit combines rugged mechanical mounting with precise electrical protection, making it a reliable choice for both new builds and panel upgrades.

Key benefits that matter in the real world

• Secure bolt-on mounting: A rigid connection to the bus minimizes movement and vibration, reducing loose-terminal risk and ensuring consistent protection even in busy electrical environments.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection for overloads and short circuits, helping you avoid nuisance trips while safeguarding wiring and devices.
• OEM-compatible design: Engineered to work with matching Square D load centers and panelboards, simplifying replacement and maintenance without compatibility concerns.
• Versatile applications: Ideal for residential panels, commercial service equipment, and light industrial installations where reliable overcurrent protection is essential.

Technical snapshot

• Manufacturer: Square D
• Part number: QOB125GFI
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 25A
• Voltage rating: 120V
• Number of poles: 1
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Who benefits from the QOB125GFI

Homeowners upgrading a panel, electricians performing panel replacements, or facility managers wiring dedicated circuits will appreciate the straightforward installation and dependable performance. If you’re replacing an aging or tripped breaker, this unit’s precise thermal-magnetic response helps you restore power quickly while maintaining safety margins for wiring and connected loads.

Practical considerations and tips

When installing, follow manufacturer torque guidelines and local electrical codes to ensure a secure, compliant connection. Use only compatible Square D load centers and panelboards to preserve protection coordination and reliability. This breaker is a solid choice for keep-safing lighting circuits, outlets, and small equipment in both homes and light commercial spaces.

Trust AmpState for genuine Square D breakers and fast, dependable service. The QOB125GFI delivers reliable protection where it matters most—inside your electrical panel.