Square D | QO320PL | Circuit Breaker | 20A | 3-Pole | 240V | Plug-In

The Square D QO320PL is a 20A, 3-pole, 240V plug-in circuit breaker designed for quick, reliable replacements in compatible Square D panels. Built for maintenance, retrofit, and replacement projects, this unit is the precise match when your system needs solid, dependable protection without complicated wiring changes. The part number QO320PL is your best reference for compatibility, so verify it against your panel’s accepted breakers before ordering.

Key specifications at a glance

• Amperage: 20 A
• Poles: 3-Pole
• Voltage: 240V
• Type: Plug-In
• Compatibility: QO series panels; use the QO320PL as the reference model for fit

Why this design matters

The 3-pole configuration is ideal for protecting multi-conductor 240V circuits and 3‑phase feeders in compatible panels. A plug-in design means faster swaps during servicing or upgrades, reducing downtime and simplifying panel maintenance. By using a dedicated Square D QO320PL, you’re choosing a device engineered to pair with the QO line’s bus and mounting architecture, which helps ensure reliable seating and predictable performance when you need it most.

Ideal use cases

• Maintenance: keep your 240V circuits protected with a ready-to-install replacement that matches the original specification.
• Retrofit: update older panels to current standards without changing the entire enclosure.
• Replacement: replace a failed or worn breaker in a compatible QO panel with minimal downtime.
• Spare part for service crews: carry a matching 20A, 3-pole, 240V plug-in breaker to handle on-site needs quickly.

Installation and compatibility tips

• Always confirm fit and ratings before ordering by cross-referencing with your panel’s labeling and the QO320PL model number.
• Ensure the panel is a Square D QO-series panel compatible with plug-in breakers of this style.
• Handle with the power off and follow all safety procedures when replacing breakers in live panels.
• Use this breaker specifically for 240V circuits that require three conductors to be monitored and protected in a single device.

With the Square D QO320PL, you gain a purpose-built solution that aligns with your panel’s electrical ecosystem, delivering precise protection for demanding 240V applications. When planning maintenance or replacements, rely on the model number that guarantees compatibility, and choose a plug-in design that simplifies installation and future service needs.