Square D Panels

Many electricians consider QO the "Cadillac" of residential panels. Key reasons include: the fastest trip time in the industry (1/60th second), tin-plated copper bus bars instead of aluminum, the Visi-Trip indicator for easy troubleshooting, superior build quality with tight tolerances, and a lifetime breaker warranty for residential use. The panels cost more upfront but provide better long-term protection and reliability.

QO is Square D's premium residential line; Homeline is their value line. Key differences: QO has tin-plated copper bus bars (Homeline uses aluminum), QO breakers cost about 50% more, QO includes the Visi-Trip indicator, and QO has a more robust overall build quality. Both are quality products, but for customers prioritizing maximum protection and longevity, we recommend QO.

No. Square D QO panels require Square D QO breakers—they are not interchangeable with other brands. Using non-compatible breakers is a code violation, voids warranties, and creates safety hazards. We always install matching Square D QO breakers and stock common sizes for service calls.

Square D QO panels and breakers typically cost 50-100% more than economy brands like Eaton BR or Square D's own Homeline. For a complete 200A panel installation, expect to pay $300-$600 more for QO compared to value brands. Most homeowners find the premium worthwhile for the superior protection and lifetime breaker warranty.

Plug-on Neutral is a design feature that allows AFCI and GFCI breakers to snap onto an integrated neutral bar, eliminating the need for pigtail wires. This makes installation faster and cleaner. If you're installing a new panel in 2024+, Plug-on Neutral is highly recommended because modern electrical code requires AFCI protection in most living spaces—you'll likely have many AFCI breakers. QO panels 12 spaces and larger include Plug-on Neutral capability.