Square D QO120CAFI - 20 A, 120 V, 1-Pole Plug-In Circuit Breaker | AmpState

The Square D QO120CAFI is your go-to 20 A, 120 V, 1-pole plug-in circuit breaker designed to protect every branch of your electrical system with precision. Built for quick, secure installation, this molded-case breaker integrates seamlessly into Square D QO panelboards and load centers, delivering reliable overcurrent and short-circuit protection for residential, commercial, and light industrial applications.

Why the QO120CAFI stands out

• Fast plug-in connection for straightforward installation and hassle-free replacement, minimizing downtime on service or maintenance calls.
• Thermal-magnetic trip unit provides stable, repeatable protection performance across a wide range of load conditions, reducing nuisance trips and improving reliability.
• OEM-compatible design engineered to pair with matching Square D OEM load centers and panelboards, ensuring consistent fit and predictable behavior.
• Single-pole, 20 A, 120 V configuration ideal for protecting individual branch circuits without unnecessary complexity or bulk.

Ideal use cases and who benefits

• Homeowners upgrading or repairing branch circuits in residential panelboards—simple replacement that restores circuit protection quickly.
• Electrical contractors wiring or servicing commercial spaces—compact, reliable protection for lighting and receptacle circuits.
• Light industrial setups needing dependable protection for specific equipment and conveyors where a single-pole solution is appropriate.

Compatibility, installation, and practical tips

• Designed for plug-in mounting in Square D QO series panelboards and compatible load centers—verify the panel is rated for 120 V and supports 1-pole 20 A breakers.
• Replace only with the same type and rating to maintain coordinated protection and warranty coverage.
• Power should be de-energized during replacement; ensure the load center’s main disconnect is off before servicing any breakers.
• Keep in mind circuit labeling and labeling practices to maintain clear, safe operation and easy future maintenance.

Technical specifications at a glance

• Manufacturer: Square D
• Part Number: QO120CAFI
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20 A
• Voltage Rating: 120 V
• Number of Poles: 1
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

With the Square D QO120CAFI, you gain precise protection, reliable performance, and installation practicalities that matter in everyday electrical work. This 1-pole, 20 A breaker is built to endure the demands of real-world panel systems, delivering consistent protection when it’s needed most. Ready to upgrade or replace a troublesome breaker? The QO120CAFI is the thoughtful, purpose-built choice for safe, efficient electrical protection in your space.