
Switchgear
- 400A to 4000A amperage range
- UL 891 & Siemens Approved OEM certified
- NEMA 1 indoor or NEMA 3R outdoor rated
UL 891 Certified
Siemens Approved OEM
EUSERC Approved
DEI Power offers UL 891-certified switchgear, switchboards, service entrance switchgear, meter mains, and service entrance sections for commercial, industrial, and utility applications. Built with genuine Siemens components, available in NEMA 1 and 3R enclosures, and rated from 400A to 4000A for reliable power distribution across New Jersey and nationwide.





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Switchgear refers to the combination of electrical disconnect switches, fuses, and circuit breakers used to control, protect, and isolate electrical equipment in a power system. Distribution, in contrast, refers to the broader delivery of power from a switchgear assembly to individual loads or downstream panels. DEI Power's UL 891-certified switchgear and switchboards serve as the primary control and protection point in commercial, industrial, and utility power distribution systems, rated from 400A to 4000A.
Talk to our experts for custom solutions and tailored guidance.

Switchgear rated to 4000A supports reliable power distribution in hyperscale and enterprise data center environments.

UL 891-certified switchboards and meter mains provide code-compliant power management for office campuses and commercial facilities.

Heavy-duty switchgear and SES units control large electrical loads in manufacturing plants and industrial processing operations.

EUSERC-approved service entrance switchgear meets utility specifications for substations and critical infrastructure power systems.
Talk to our experts for custom solutions and tailored guidance.
Our 50,000 sq. ft. Ontario, CA facility enables in-house switchgear builds with free shipping and delivery in 3–5 business days nationwide.
As an approved Siemens OEM with UL 891 certification, every unit we ship meets strict code compliance and genuine component standards.
Our in-house electrical design team provides dedicated project support, technical guidance, and post-installation assistance to reduce change orders.
Submit your project specs and a DEI Power specialist will respond with pricing, configuration guidance, and lead time confirmation.
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.