Square D QO320SWN 20A 3P Circuit Breaker, QO, Plug-On | AmpState

Meet the Square D QO320SWN 20A 3P Circuit Breaker — a plug-on protective solution engineered for dependable performance in panelboards, load centers, and broad electrical distribution setups. Designed to be a direct-fit replacement, it’s ideal for retrofit work and maintenance planning when the part number needs to stay consistent, keeping your electrical system humming without unnecessary downtime.

What makes the QO320SWN stand out

• Plug-On convenience: Quick, tool-free installation that snaps onto compatible bus bars, reducing service time during upgrades or routine maintenance.
• Three-pole design: Provides balanced protection for multi-phase circuits, enhancing safety and reliability in commercial and larger residential installations.
• 20 Amp protection: Precisely rated to guard dedicated circuits and appliances while supporting efficient electrical distribution.
• QO series compatibility: Part of Square D’s trusted QO family, ensuring consistent performance with a wide range of panelboards and load centers.
• Part-number stability: Specifically chosen for projects where keeping the same part number simplifies stocking, ordering, and maintenance planning.

Ideal use cases

• Retrofit projects in existing electrical panels where quick, reliable replacement is essential.
• Maintenance planning for facilities that require consistent, repeatable part numbers to streamline procurement.
• New or upgrading installations in commercial settings that rely on robust, multi-pole protection for shared circuits.

Why this matters for your project

The QO320SWN isn’t just another breaker; it’s a dependable, plug-on solution designed to minimize system downtime and maintenance complexity. The three-pole 20A configuration protects multi-wire branch circuits effectively, while the plug-on design reduces installation time and potential errors. Because it’s part of the Square D QO lineup, you gain familiarity and compatibility across a broad range of panelboards and load centers, helping technicians work faster and with greater confidence.

Compatibility and support

Need confirmation that this exact part fits your panel or distribution setup? AmpState offers guidance to verify compatibility and ensure a precise match for your electrical system. If you’re unsure about fit, reach out for expert help to confirm the right part number and replacement strategy.

Technical snapshot

• Manufacturer: Square D
• Part Number: QO320SWN
• Product Type: Circuit Breaker
• Amperage: 20 A
• Poles: 3 Poles
• Series: QO (Plug-On)

Choose the QO320SWN for a reliable, consistent, and retrofit-friendly 3-pole 20A protection solution that aligns with your existing Square D QO panel ecosystem. If you need help confirming compatibility or matching a part number, AmpState is ready to assist and keep your electrical project on track.