400 Amp All-in-One Combination Service Entrance Devices

Yes. All DEI Power 400A service entrance devices, including the Meter Main and SES units, are UL Listed and UL 891 certified. This ensures the assemblies meet national safety standards for low-voltage switchgear and are accepted by inspectors and utilities across the United States.

EUSERC (Electric Utility Service Entrance Requirements Committee) approval means the equipment meets standardized utility requirements for service entrance construction. DEI Power's Meter Main and SES products are EUSERC approved, which is often required by utilities before allowing meter installation and energization, particularly in Western U.S. markets.

DEI Power offers both NEMA 1 (indoor) and NEMA 3R (outdoor, weather-resistant) enclosure options for the Meter Main and SES products. NEMA 3R is suitable for exposed outdoor installations, while NEMA 1 is ideal for protected indoor environments such as electrical rooms in commercial or industrial buildings.

Yes. DEI Power's 400A service entrance devices meet UBC, CBC, and IBC requirements for all seismic zones. This compliance is essential for projects in California and other seismically active regions, ensuring the equipment remains structurally sound and operational during seismic events.

DEI Power's service entrance devices support a wide range of voltage configurations including 120/240V, 240V, 208Y/120V, 240/120V, 480V, 480Y/277V, and 415/240V. This flexibility makes them suitable for diverse commercial, industrial, and utility applications with varying power distribution requirements.

DEI Power offers free shipping on all orders with delivery in 3–5 business days. Most orders ship within 1 business day from our 50,000 sq. ft. facility in Ontario, California. In rare cases, fulfillment may take up to 5 business days. All units include a 1-year warranty.