
1000 Amp Service Entrance Switchgear NEMA 1/3R
- 1000A service entrance switchgear rated
- UL 891 certified & EUSERC compliant unit
- Seismic rated: UBC, CBC & IBC compliant
UL 891 Certified
Siemens Approved OEM
EUSERC Approved
DEI Power's 3-Phase Distribution Panels category encompasses a comprehensive range of switchboards, switchgear, panelboards, remote power panels, service entrance sections, and meter mains. Built with genuine Siemens components and UL 891 certified, these solutions serve data centers, commercial buildings, industrial facilities, and utility infrastructure across amperages from 225A to 4000A.




































































































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A 3-phase distribution panel is a metal enclosure — typically NEMA 1 (indoor) or NEMA 3R (outdoor) — containing a main circuit breaker, bus bars for each of the three phases, and rows of branch circuit breakers. Panels in this category measure approximately 14" D × 30" W × 90" H, are wall-mounted or floor-standing, and include labeled terminal connections for voltage configurations such as 208Y/120V, 480Y/277V, or 415/240V.
Talk to our experts for custom solutions and tailored guidance.

RPPs, switchboards, and switchgear power hyperscale, enterprise, and colocation data center rows and AI compute clusters.

Panelboards, switchboards, and meter mains manage multi-floor electrical distribution in offices, campuses, and mixed-use facilities.

Heavy-duty switchgear and service entrance equipment control large electrical loads in plants, processing facilities, and factories.

UL 891 certified panels support life-safety branch loads, imaging equipment, and mission-critical power in hospitals and medical facilities.
Talk to our experts for custom solutions and tailored guidance.
In-stock panels ship within 1 business day from our 50,000 sq. ft. Ontario, CA facility, with built-to-order configs in 4–6 weeks — beating the 16-week industry average.
Every panel is manufactured with genuine Siemens components at our domestic facility, UL 891 certified, BABA compliant, and engineered for long-term reliability in mission-critical environments.
From spec review to on-site delivery coordination, our specialists provide 24/7 support, fast quotes, organized submittals, and hands-on guidance throughout your entire project lifecycle.
Submit your project details and an RPP or switchgear specialist will respond promptly with pricing, submittals, and delivery options.
For immediate assistance, feel free to give us a direct call at (866) 773-8050. You can also send us a quick email at sales@deipower.com.
For immediate assistance, feel free to give us a direct call at (866) 773-8050. You can also send us a quick email at sales@deipower.com.