Breaker Boxes & Parts

Breaker Boxes & Parts connect and protect your electrical system, routing power safely from the service entrance to branch circuits in homes, workshops, and commercial buildings. This category includes residential load centers, commercial panelboards, main breaker and main‑lug panels, subpanels, and a full range of accessories that keep distribution organized, expandable, and code compliant.

Choose a breaker box by amperage rating and space count. Common sizes span 60A to 400A with 8 to 60+ circuit spaces. Leave room for future circuits; planning 20–30% spare capacity reduces later upgrades. Indoor panels typically carry NEMA 1 ratings, while outdoor enclosures use NEMA 3R for weather resistance. Match voltage and phase (120/240V single‑phase or three‑phase) to your service, and select copper or aluminum bus bars based on budget and corrosion concerns.

Popular parts include standard thermal‑magnetic breakers, AFCI and GFCI breakers, dual‑function options, tandem breakers, grounding and neutral bars, lugs, filler plates, deadfront covers, bonding screws, knock‑out seals, cable connectors, interlock kits, and whole‑home surge protective devices. Look for plug‑on neutral designs to speed installation and keep wiring tidy, as well as convertible main kits for flexible service configurations.

Benefits extend beyond protection. A well‑sized electrical panel improves reliability, simplifies maintenance, and supports additions like EV chargers, heat pumps, shop tools, and data equipment. Quality components reduce nuisance trips and hot spots, while clear labeling and color‑coded handles aid troubleshooting. For harsher locations, powder‑coated steel or stainless enclosures resist moisture and dust.

Helpful tips:
- Verify local code and listing requirements (UL/CSA) and follow NEC updates.
- Use torque values specified for lugs and breakers to secure conductors.
- Pair panels with surge protection to guard sensitive electronics.
- Consult a licensed electrician for service upgrades or meter combos.

Explore brands, warranty terms, enclosure sizes, and breaker compatibility before you finalize your choice.