Square D QOB120CAFI - 20 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

The Square D QOB120CAFI is a 20A, 120V, 1-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. Built for homes, small businesses, and light industrial applications, it pairs reliability with straightforward installation for advancing electrical safety and system uptime.

Key advantages that set the QOB120CAFI apart

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection that stays tight even in demanding environments.
• Thermal-magnetic trip unit provides stable, repeatable protection by combining long-term overload protection with instantaneous short-circuit response.
• 1-pole, 20A, 120V configuration tailored for general lighting, receptacle circuits, and other common branch circuits.
• OEM-compatible design ensures seamless compatibility with matching Square D load centers and panelboards for reliable performance and simplified replacements.
• molded case durability delivers robust insulation and long-lasting protection in standard electrical panels used across residential, commercial, and light industrial settings.

Whether you’re upgrading an aging panel, adding a new branch circuit, or replacing a faulty breaker, the QOB120CAFI from Square D offers a precise, maintenance-friendly solution. Its bolt-on style means a solid mechanical connection, minimizing wear and movement that could compromise protection over time. The integrated thermal-magnetic trip unit helps prevent nuisance trips while staying sensitive to true faults, so you get reliable protection when it matters most.

Ideal use cases include:

• Upgrading residential panels in homes and apartments to improve safety and code compliance
• Adding dedicated circuits for lighting, outlets, or small appliances in light commercial spaces
• Replacing failed breakers in compatible Square D panelboards to restore protection quickly
• Situations where a robust, bolt-on connection is preferred for reduced vibration and secure bus contact

Technical specifications (as a quick reference):

• Manufacturer: Square D
• Part Number: QOB120CAFI
• 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

Choosing the Square D QOB120CAFI means selecting a dependable, OEM-compatible solution that helps you protect circuits with precision and ease. If you’re planning panel maintenance or a circuit expansion, this 20A, 120V, 1-pole bolt-on breaker from AmpState is engineered to deliver consistent protection, straightforward installation, and long-term reliability.