
1000 Amp Service Entrance Switchgear NEMA 1/3R
- 1000A service entrance switchgear unit
- UL Listed & EUSERC Approved certified
- NEMA 1 indoor & 3R outdoor enclosures
UL 891 Certified
EUSERC Approved
Siemens Approved OEM
DEI Power's Service Entrance Breaker Boxes & Panels include UL 891-certified switchgear, switchboards, panelboards, SES sections, and meter mains ranging from 400A to 4000A. Built with genuine Siemens components and available in NEMA 1 or NEMA 3R enclosures, these assemblies serve commercial, industrial, and utility power distribution applications.

























































































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A service entrance panel is the main electrical distribution point where utility power enters a building. It houses the main circuit breaker and distributes electricity to branch circuits throughout the facility. Service entrance panels — including SES sections, switchboards, and switchgear — are rated for amperages from 400A to 4000A and must meet utility-specific and UL code requirements.
Talk to our experts for custom solutions and tailored guidance.

Service entrance switchgear and panelboards power large commercial campuses, office buildings, and retail facilities requiring dependable, high-capacity electrical distribution.

High-amperage switchboards and SES sections manage large electrical loads and critical power systems in manufacturing plants and processing facilities.

EUSERC-approved service entrance switchgear and meter mains support utility substations and infrastructure projects requiring strict compliance with utility specifications.

UL 891-certified switchgear and switchboards deliver reliable, uninterrupted power distribution for hyperscale and enterprise data centers with mission-critical uptime requirements.
Talk to our experts for custom solutions and tailored guidance.
As a Siemens Approved OEM, every panel and switchgear assembly uses genuine Siemens components, ensuring code-compliant, precision-engineered performance on every project.
In-house manufacturing at our 50,000 sq. ft. Ontario, CA facility means faster builds, fewer delays, and free shipping with delivery in 3–5 business days nationwide.
Over a decade building UL 891-certified power distribution equipment for commercial, industrial, and utility projects, backed by dedicated project and technical support.
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.