Square D Breaker Panels

Square D breaker panels are among the most widely installed electrical distribution panels in North America. Whether you need a direct replacement for a failed commercial panel or a custom-configured unit for a new installation, Verified Breakers carries the stock and the technical expertise to get it to you in 24 to 48 hours — when standard distributor lead times simply aren't fast enough.

Square D Breaker Panel Lines We Supply

Square D's panel lineup spans residential, commercial, and industrial specifications. We focus on the commercial and industrial range that contractors and facilities teams need for emergency and project work:

• Square D QO Series — The most commonly specified residential and light commercial breaker panel. Accepts QO-type plug-in circuit breakers. Available in 100A to 200A ratings, 12 to 40 circuit spaces, main breaker and main lug configurations.
• Square D Homeline Series — Value-tier residential panels for new construction and retrofit applications. 100A to 200A, compatible with Homeline plug-in breakers.
• Square D I-Line Commercial Panels — Heavy commercial and industrial distribution panels using the I-Line plug-on breaker system. 400A to 1200A, designed for facilities where circuit changes are frequent.
• Square D NQ Distribution Panels — Standard lighting and appliance panelboards for multi-tenant commercial buildings and large retail. 100A to 400A, 42 circuits standard.
• Square D NQOD Panelboards — Combination main breaker/distribution panel configuration for commercial tenant spaces and light industrial applications.

Specifications and Configurations

• 100A, 150A, and 200A — residential and light commercial
• 400A and 600A — commercial subpanels and tenant feeds
• 800A and 1200A — industrial distribution panels and main switchboard feeds
• Single-phase 120/240V and three-phase 208Y/120V, 480Y/277V
• Main breaker included or main lug only — specified at order
• Surface mount and flush mount enclosures
• NEMA 1 (indoor) and NEMA 3R (outdoor raintight) available
• Pre-populated with circuit breakers to your specifications on request

Common Use Cases

Square D breaker panels appear in virtually every commercial building class — office buildings, retail centers, schools, hospitals, light manufacturing, and warehousing. Their market share means replacement parts and compatible circuit breakers are widely available, which makes QO and I-Line panels the practical choice for any facility planning long-term maintenance simplicity.

For emergency replacement scenarios, the QO and NQ series are the most common requests we handle — panels that have failed and need a direct replacement before the next shift, before a health inspection, or before a tenant occupancy deadline.

Faster Than the Distribution Channel

Authorized Square D distributors run on standard fulfillment models. A commercial QO or NQ panel that isn't in their local warehouse can take one to three weeks to arrive on order. Custom I-Line configurations with populated breakers can run eight to sixteen weeks through standard channels.

We operate on different economics. Our inventory is purchased, warehoused, and ready to pick. Most Square D breaker panel orders ship within 24 to 48 hours of order confirmation. For contractors managing job site schedules and facilities teams dealing with unplanned outages, that window makes a tangible difference.

Pre-Populated Panel Builds

We build and ship Square D breaker panels pre-populated to your circuit schedule — breakers installed, labeled, and ready for field connection. This reduces installation time significantly and eliminates the risk of incorrect breaker selection in the field under pressure.

Get a Quote Today

Tell us the panel series, amperage, number of circuits, and configuration. We'll confirm availability and shipping timeline within the business day.

Square D QO, Homeline, I-Line, and NQ breaker panels — in stock, custom builds available, nationwide delivery in 24–48 hours.