Square D | QOB220SWN | Circuit Breaker | 20A | 2-Pole | Bolt-On

Engineered by Square D, the QOB220SWN is a 20-amp, 2-pole circuit breaker designed for maintenance, retrofit, and replacement projects where exact specifications matter. If your panel demands a bolt-on, double-pole unit with a precise 20-amp rating, this breaker is built to perform reliably when it’s most needed.

Key specifications

• Amperage: 20A
• Poles: 2-Pole
• Mounting: Bolt-On
• Part Number: QOB220SWN

Why this design matters

The 2-pole configuration provides simultaneous disconnection of both conductors, improving safety on multi-wire circuits. The bolt-on mounting delivers a solid, secure connection inside compatible panels, reducing loosened contacts over time and helping maintain consistent protection for your electrical system.

Ideal use cases

Use this breaker for panel maintenance, retrofits, or replacements where you must match an exact spec. It’s particularly suited for installations that specify the QOB family form factor and require a robust, fixed-mount solution with a 20-amp rating for branch circuits or control circuits in residential or light commercial settings.

Fit, compatibility, and installation tips

Before ordering, confirm fit and ratings to ensure compatibility. The part number is the best reference for matching this breaker to your panel. When you install, follow all manufacturer guidelines for bolt-on breakers: verify the panel accepts a bolt-on, 2-pole unit of 20A, and ensure the mounting surface and bus connections are clean and secure before re-energizing.

With the Square D QOB220SWN, you get a purpose-built replacement that aligns with your existing specs and helps maintain safe, reliable electrical protection across your system.