Square D QOB120GFI - 20 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

The Square D QOB120GFI is a 20A, 120V, 1-pole bolt-on molded case circuit breaker designed to protect branch circuits from overcurrent and short-circuit events in panelboards and load centers. Built for reliable performance in residential, commercial, and light industrial settings, this unit is ready to safeguard your electrical system where it matters most.

Key advantages

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection, helping maintain consistent trip performance even in panels subject to movement or vibration.
• Thermal-magnetic trip unit provides stable, repeatable protection against overcurrent and short circuits, reducing nuisance trips while keeping circuits protected.
• 1-pole, 20A, 120V configuration is ideal for protecting individual branch circuits such as lighting, receptacles, and small equipment loads in a variety of installations.
• OEM-compatible mounting works with matching Square D load centers and panelboards, simplifying installation, service, and future replacements.
• Square D reliability backed by a long-standing track record of performance and easy availability of compatible components and replacements.

Ideal applications and use cases

• Residential projects protecting lighting and outlet circuits in living spaces, kitchens, and bathrooms.
• Commercial applications for small circuits in offices, retail spaces, and service areas requiring dependable overcurrent protection.
• Light industrial environments where compact, builder-friendly protection is needed for individual branch circuits.

Technical snapshot

• Manufacturer: Square D
• Part Number: QOB120GFI
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 120V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

When you select the Square D QOB120GFI from AmpState, you’re choosing a trusted, easy-to-replace solution that integrates smoothly with your existing panel system. It’s designed for straightforward installation, reliable protection, and long-term availability of replacement parts—so your electrical system stays safe and compliant with minimal downtime.