400 Amp 1 Phase Switchboards

The 400 Amp switchboards support multiple voltage options including 120/240V, 240V, 208Y/120V, 240/120V, 480V, 480Y/277V, and 415/240V. This range accommodates diverse commercial and industrial electrical system requirements, making these switchboards adaptable to a broad spectrum of project specifications.

Yes. All DEI Power switchboards and switchgear are UL 891 certified and UL listed, ensuring full code compliance. They also meet UBC, CBC, and IBC seismic requirements for all seismic zones and carry EUSERC approval, making them suitable for utility-grade service entrance applications across the USA.

NEMA 1 enclosures are designed for indoor installations and provide protection against dust and incidental contact. NEMA 3R enclosures are weather-resistant and suitable for outdoor installations, protecting against rain, sleet, and ice. DEI Power offers both ratings across their switchboard and switchgear product lines.

Most orders ship within 1 business day from DEI Power's 50,000 sq. ft. facility in Ontario, California. In rare cases, up to 5 business days may be required. Standard delivery is 3–5 business days, and all orders include free shipping with a 1-year warranty.

Yes. DEI Power offers custom switchboard configurations built to approved utility specifications. Due to utility standards, service entrance switchgear and meter mains must be configured to specific utility requirements. Customers are encouraged to call and speak with a specialist to receive an accurate quote and configuration guidance.

DEI Power provides dedicated project support, technical specialist consultation, and ongoing post-installation support. Switchgear customers benefit from 24/7 support for fast assistance with orders and product questions, plus in-house electrical design support to ensure seamless integration and long-term serviceability in the field.