400 Amp Main Breaker Panel Boards

DEI Power's panel board lineup supports a wide range of amperage options including 400A, 600A, 800A, 1000A, 1200A, 1600A, 2000A, 2500A, 3000A, and 4000A. This makes them suitable for projects ranging from standard commercial buildings to large-scale industrial facilities and utility infrastructure requiring high-capacity power distribution.

All products in the 400 Amp Main Breaker Panel Board lineup are available in NEMA 1 (indoor) and NEMA 3R (outdoor, weather-resistant) enclosures. The NEMA 3R rating makes them suitable for exterior installation in environments exposed to rain, sleet, or external ice formation, providing flexible deployment across a wide range of jobsite conditions.

DEI Power's 400 Amp panel boards support multiple voltage configurations including 120/240V, 240V, 208Y/120V, 240/120V, 480V, 480Y/277V, and 415/240V. This flexibility allows the equipment to serve a broad range of commercial, industrial, and utility electrical systems with varying distribution requirements.

Yes. Products such as the Meter Main, Service Entrance Section (SES), and Service Entrance Switchgear must be built to approved utility specifications due to utility standards. Customers are required to consult with a DEI Power specialist before ordering to ensure the correct utility-approved configuration is specified for their jurisdiction and project.

Most orders ship within 1 business day from DEI Power's Ontario, California facility, with standard delivery in 3–5 business days. Free shipping is included on all orders. In rare cases, processing may take up to 5 business days. All products include a 1-year warranty, and dedicated project support is available throughout the ordering process.

Yes. All DEI Power 400 Amp main breaker panel boards meet UBC, CBC, and IBC requirements for all seismic zones. This compliance makes them suitable for installation in seismically active regions across the USA, ensuring structural integrity and safety for both indoor and outdoor electrical distribution applications in demanding environments.