
1000 Amp Service Entrance Switchgear NEMA 1/3R
- 1000A service entrance for critical systems
- NEMA 1 & 3R enclosures suit any environment
- UL Listed & EUSERC approved assembly
UL 891 Certified
EUSERC Approved
Siemens Approved OEM
Outdoor Switchgear Lineup Enclosures include pad-mount and free-standing switchboards, switchgear, and service entrance sections designed for commercial, industrial, and utility power distribution. Available in NEMA 1 and NEMA 3R configurations, these UL 891-certified assemblies are built with genuine Siemens components and rated from 400A to 4000A.




























































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A switchgear enclosure is a protective housing that contains switching devices, circuit breakers, busbars, and protective equipment used to control and distribute electrical power. Available in NEMA 1 (indoor) or NEMA 3R (outdoor weather-resistant) ratings, these enclosures safeguard components against environmental exposure while providing safe operator access for maintenance and operation in commercial, industrial, and utility applications.
Talk to our experts for custom solutions and tailored guidance.

Switchgear lineup enclosures provide reliable service entrance and power distribution for office buildings, retail, and mixed-use campuses.

Heavy-duty enclosures handle large electrical loads and critical power protection for manufacturing plants and processing operations.

EUSERC-approved, utility-grade switchgear enclosures support substation service entrance and infrastructure power distribution projects.

High-capacity switchgear enclosures rated up to 4000A ensure uninterrupted power distribution for mission-critical data center environments.
Talk to our experts for custom solutions and tailored guidance.
DEI Power manufactures switchgear in-house at a 50,000 sq. ft. Ontario, CA facility, delivering faster builds, fewer delays, and free shipping in 3–5 business days.
Every enclosure is built with genuine Siemens components and certified to UL 891 standards, ensuring code compliance, utility acceptance, and dependable field performance.
From configuration and utility specifications to post-installation questions, DEI Power's specialists provide hands-on support to keep your project on schedule.
Submit your project details and a DEI Power specialist will respond with pricing, configuration guidance, and lead time 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.