
Switchgear
- Siemens Approved OEM manufacturer
- 400A–4000A range, NEMA 1 or 3R rated
- In-house build for faster delivery schedule
UL 891 Certified
EUSERC Approved
Siemens Approved OEM
DEI Power's 600A Switchboards offer UL 891-certified, three-phase power distribution solutions for commercial, industrial, and utility applications. Built with genuine Siemens components, available in NEMA 1 and 3R enclosures, and engineered for demanding environments, these switchboards deliver reliable, code-compliant performance with industry-leading lead times.





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DEI Power's 600A switchboards are UL 891 certified, EUSERC approved, and built to meet UBC, CBC, and IBC requirements for all seismic zones. As a Siemens Approved OEM, every assembly uses genuine Siemens components, ensuring code compliance and reliable performance across commercial, industrial, and utility installations.
Talk to our experts for custom solutions and tailored guidance.

Reliable 600A three-phase power distribution for office campuses, retail centers, and mixed-use developments.

Heavy-duty switchboards managing large electrical loads and critical systems in manufacturing and processing plants.

UL 891-certified switchgear supporting continuous uptime for hyperscale and enterprise data center power systems.

EUSERC-approved service entrance switchgear engineered for utility substations and critical infrastructure projects.
Talk to our experts for custom solutions and tailored guidance.
Our 50,000 sq. ft. Ontario, CA facility enables in-house builds, fewer delays, and free shipping with 1–5 business day delivery nationwide.
As an approved Siemens OEM for 10+ years, every switchboard uses genuine Siemens components for code-compliant, dependable performance.
Dedicated project support, in-house engineering consultation, and long-term serviceability keep your project on schedule and operations running.
Submit your project specs and a DEI Power specialist will respond with configuration guidance, pricing, 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.