800A Main Circuit Breaker Switchboards — NEMA 3R

DEI Power's 800A NEMA 3R switchboards support multiple voltage configurations including 120/240V, 240V, 208Y/120V, 240/120V, 480V, 480Y/277V, and 415/240V. This flexibility allows the equipment to be matched to a wide range of commercial, industrial, and utility service requirements without custom re-engineering.

Yes. All DEI Power switchboards are UL 891 certified and UL listed assemblies, ensuring they meet established safety and performance standards for low-voltage switchgear. They are also EUSERC approved and meet UBC, CBC, and IBC seismic requirements for all seismic zones, supporting code compliance across most U.S. jurisdictions.

DEI Power switchboards are built exclusively with genuine Siemens components. As a Siemens Approved OEM, DEI Power has the manufacturing authorization to use authentic Siemens parts, which ensures precision fit, verified performance, and long-term serviceability — including access to replacement parts and ongoing manufacturer support.

Yes. Service entrance switchgear, meter mains, and SES configurations must be built to approved utility specifications per utility standards. DEI Power's engineering team provides specialist consultation to configure each unit to your local utility's requirements, ensuring approval and seamless interconnection with the utility grid.

While this category focuses on 800A main circuit breaker switchboards, DEI Power's switchboard and switchgear product line covers a full amperage range from 400A up to 4000A. If your project requires a different amperage — such as 1000A, 1200A, 1600A, or 2000A — contact our team for a custom configuration quote.

DEI Power offers free shipping on all switchboard orders, with most units shipping within 1 business day and standard delivery in 3–5 business days. In rare cases, up to 5 business days may be required for order processing. All orders include a 1-year warranty covering parts and manufacturing defects.