Square D QO310 10A 3P 240V Circuit Breaker, Plug-On | AmpState

Meet the Square D QO310 — a dependable 10 A, 3-pole, 240 V plug-on circuit breaker designed for panelboards, load centers, and electrical distribution. Built for retrofit work and maintenance planning, this part number stays consistent so replacements and inventory remain straightforward, reducing downtime and procurement guesswork.

• Plug-on installation — quick, tool-free mounting into compatible Square D QO panelboards and load centers, streamlining service calls and upgrades.
• Compact 3-pole design — 240 V operation with three input paths, ideal for protecting multi-line circuits and shared-leg applications in modular electrical distributions.
• Consistent part number for upgrades — the QO310 designation helps maintain a stable spares inventory and aligns retrofit projects with existing panel labeling and documentation.
• Direct compatibility — specifically engineered for Square D QO-series systems, ensuring reliable fit and predictable performance in approved installations.
• Expert support from AmpState — readily available to confirm fit and compatibility with your panel setup, helping you complete projects with confidence.

Who should consider the QO310? electricians, facility managers, and maintenance teams tackling panel retrofits, repairs, or modernization within QO-series distributions. If you’re refreshing an aging panel or stocking spare breakers for planned maintenance, this 3-pole, 240 V device provides the protection you need without introducing extra complexity to your electrical distribution.

Practical tips for use and installation:

• Before replacement, de-energize the affected circuit and follow all local safety procedures to protect personnel and equipment.
• Verify your panel is a Square D QO-series model compatible with plug-on breakers to ensure a secure, reliable connection.
• Use the QO310 in circuits that require protection for a 240 V, three-pole configuration, and keep the same part number in your spare inventory for straightforward maintenance.
• Consult AmpState’s support if you’re unsure about fitment or panel compatibility to avoid installation delays.

With the QO310, you gain a straightforward, reliable replacement path that fits neatly into existing electrical distribution schemes. It’s designed to keep your retrofit and maintenance workflows efficient, so installations stay on schedule and systems stay protected.