QO™ Load Centers

The QO load center and circuit breaker family is designed to satisfy individual requirements with a comprehensive selection. Innovative, high quality features include:

• 3/4″ circuit breaker width
• Single and three phase
• 30 to 400 amps
• 2 to 60 circuits
• Exclusive shielded copper bus features electro tin-plated copper bus bars sandwiched between two rugged polymer shields to insulate and secure the interior. 
• Indoor (NEMA 1) and Rainproof (NEMA 3R) versions
• Flush or surface mount covers available in gray and white
• Mono-Flat covers for high-end solutions with an aesthetic pleasing design
• Full complement of accessories
• Compatible with Square D™ QO Plug-on Neutral Whole Home SPD

What are some of the differences between the QO and HOMELINE load centers?

QO™ Plug-on Neutral Load Centers allow Plug-on Neutral Circuit Breakers to connect directly to the neutral bar without the pigtail. This solution provides faster installation, saves wire, frees gutter space as well as faster and easier wiring.

Qwik-grip™ wire management system[1] eliminates most knockout removal, eliminates most box connectors and speeds up and simplifies rough-ins. A state of the art wire management system that lets you move on the next job quicker.

QO™ Load Centers are compatible with Wiser Energy™ smart home power monitor which provides real-time home energy usage, notifications when devices turn on or off, and goals to track savings. Using the Square D™ version of the Sense app, keep tabs on your home anywhere from your phone.

• Backed Out Neutral Screws save labor and installation time.
• Straight-in mains wiring and uniform termination lugs help minimize service cable bends, cutting waste and saving installation time.
• Convertible mains allow fast field conversion between main breaker and main lugs to meet changing job requirements.
• Standard 22,000/10,000 ampere series short circuit current rating on main breaker load centers provides increased application capability.
• QO three-phase main circuit breaker panels can be field upgraded to provide 100,000A short circuit current ratings.
• Single, captive interior mounting screw can’t be lost. Interior mounts quickly and can easily be removed during rough-in for paint or theft protection.
• Split branch neutral with up to 50% more terminations than UL requirement — simplifies wiring and reduces clutter.
• Indoor enclosures designed to rotate 180 degrees to accommodate top or bottom service entrance feed, saving expensive service cable.
• Combination slot/square-drive neutral, ground, and cover screw accommodate both standard flat blade screwdrivers and square-head drivers. Three ground bar mounting locations (left, right, and end) make it easier to wire.

Look for Qwik-grip included commercial references

• Residential
• Remodels/Upgrades
• Commercial
• Industrial
• Agricultural