
1000 Amp Service Entrance Switchgear NEMA 1/3R
- 1000A service entrance for critical power needs
- UL 891 certified & EUSERC approved compliance
- NEMA 3R outdoor enclosure, seismic compliant
UL 891 Certified
EUSERC Approved
Siemens Approved OEM
Outdoor Floor-Standing Integrated Power Distribution Cabinets from DEI Power include NEMA 3R-rated switchgear, switchboards, and service entrance sections built with genuine Siemens components. UL 891 certified and EUSERC approved, these units support 400A to 4000A across multiple voltages for commercial, industrial, and utility applications.



























































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Switchboards are panel-type assemblies typically used for power distribution within a building, while switchgear refers to enclosed assemblies designed for higher interrupting capacity, often used at service entrances or utility-interface points. Both are available from DEI Power in NEMA 1 (indoor) and NEMA 3R (outdoor) enclosures, with ratings from 400A to 4000A.
Talk to our experts for custom solutions and tailored guidance.

Outdoor NEMA 3R switchgear and switchboards power main service entrances and building distribution in commercial facilities.

Heavy-duty switchgear from 400A to 4000A supports reliable power distribution for large industrial loads and processing facilities.

EUSERC-approved service entrance switchgear meets utility specifications for substations and infrastructure distribution projects.

High-capacity switchgear up to 4000A supports redundant, mission-critical power distribution for data center and colocation facilities.
Talk to our experts for custom solutions and tailored guidance.
DEI Power manufactures switchgear in-house at our 50,000 sq. ft. Ontario, CA facility, enabling faster builds, fewer delays, and reliable delivery in 3–5 business days.
Every unit is UL 891 certified and built with genuine Siemens components as an approved OEM manufacturer, ensuring code compliance, safety, and dependable long-term performance.
From configuration guidance to post-installation assistance, DEI Power's specialist team provides dedicated support at every stage to keep your project on schedule and reduce change orders.
Submit your project specs and a DEI Power specialist will respond promptly with accurate configuration guidance and pricing.
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.