
Switchgear
- Siemens Approved OEM, UL 891 certified
- 400A–4000A across 7 voltage options
- In-house build ensures faster delivery
UL 891 Certified
Siemens Approved OEM
EUSERC Approved
DEI Power's Outdoor Switchgear Enclosures & Walk-In Solutions include Meter Mains, Service Entrance Sections, Switchboards, Switchgear, and Service Entrance Switchgear in NEMA 1 and NEMA 3R enclosures. UL 891 certified and built with genuine Siemens components, these systems support commercial, industrial, and utility power distribution from 400A to 4000A.





Talk to our product experts for custom solutions.
Apply Filters





DEI Power offers switchgear enclosures in NEMA 1 for indoor environments and NEMA 3R for outdoor, weather-resistant installations. The NEMA 3R rating provides protection against rain, sleet, and ice formation, making it suitable for utility yards, rooftop installations, and exterior building applications where exposure to the elements is a concern.
Talk to our experts for custom solutions and tailored guidance.

Meter mains, switchboards, and switchgear provide reliable power distribution for large commercial buildings and multi-building campuses.

Heavy-duty service entrance switchgear and switchboards support large electrical load control in manufacturing and processing facilities.

EUSERC-approved switchgear and service entrance equipment designed for utility substations and critical infrastructure power systems.

High-amperage switchgear supports the power reliability demands of hyperscale and enterprise data center and colocation environments.
Talk to our experts for custom solutions and tailored guidance.
DEI Power's 50,000 sq. ft. Ontario, CA facility enables in-house builds, shorter lead times, and reliable delivery to your job site in 3–5 business days.
Every enclosure is built with genuine Siemens components under Siemens OEM authorization and UL 891 certification, ensuring code-compliant, field-ready performance.
From custom utility specifications to post-installation guidance, DEI Power's in-house engineering team supports your project at every stage, reducing change orders and field adjustments.
Submit your project details and a DEI Power specialist will respond with configuration guidance, pricing, and lead time information.
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.