
1000 Amp Service Entrance Switchgear NEMA 1/3R
- 1000A rated, NEMA 1 & 3R enclosures
- UL Listed & EUSERC Approved assembly
- Seismic-rated: meets UBC, CBC & IBC
UL 891 Certified
EUSERC Approved
Siemens Approved OEM
DEI Power offers a comprehensive range of UL 891-certified switchgear, switchboards, panelboards, and service entrance equipment built with genuine Siemens components. Designed for commercial, industrial, utility, and data center applications, these products are available from 400A to 4000A with NEMA 1 and NEMA 3R enclosure options and full seismic zone compliance.
































































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The largest global switchgear manufacturers include Siemens, Eaton, ABB, Schneider Electric, and GE. DEI Power is a Siemens Approved OEM manufacturer based in Ontario, California, producing UL 891-certified low-voltage switchgear and switchboards with genuine Siemens components for commercial, industrial, and utility applications across the USA.
Talk to our experts for custom solutions and tailored guidance.

Switchgear and switchboards power electrical distribution in office buildings, retail, and mixed-use campuses.

Heavy-duty switchgear supports reliable power for manufacturing lines, processing plants, and industrial facilities.

Service entrance switchgear and high-amperage panels meet utility specifications for substations and infrastructure.

Critical power distribution switchgear ensures uptime and reliability for data centers and colocation facilities.
Talk to our experts for custom solutions and tailored guidance.
As an approved Siemens OEM, DEI Power builds every switchgear assembly with genuine Siemens components, ensuring precision-engineered reliability and full code compliance on every project.
DEI Power's 50,000 sq. ft. Ontario, CA facility enables in-house switchgear builds, delivering faster lead times, fewer delays, and free shipping with 3–5 business day delivery nationwide.
With over a decade of experience serving commercial, industrial, and utility sectors, DEI Power provides dedicated project support, in-house engineering guidance, and long-term serviceability.
Submit your project specs and a DEI Power specialist will respond with configuration guidance, pricing, and lead time details within one business day.
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.