UL 891 Certified certified

UL 891 Certified

EUSERC Approved certified

EUSERC Approved

Siemens Approved OEM certified

Siemens Approved OEM

Service Entrance Breaker Boxes & Panels

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.

1000 Amp Service Entrance Switchgear NEMA 1/3R
1200 Amp SES NEMA 1/3R
400 Amp Service Entrance Switchgear NEMA 1/3R
1200 Amp Switchboard NEMA 1/3R
600 Amp Service Entrance Switchgear NEMA 1/3R
400 Amp Switchboard NEMA 1/3R
240/120V Switchboard NEMA 1/3R
400 Amp Panelboard NEMA 1/3R
600 Amp Switchboard NEMA 1/3R
1000 Amp Switchgear NEMA 1/3R
2000 Amp SES NEMA 1/3R
4000 Amp SES NEMA 1/3R
800 Amp Meter Main NEMA 1/3R
4000 Amp Switchboard NEMA 1/3R
240/120V Service Entrance Switchgear NEMA 1/3R
4000 Amp Switchgear NEMA 1/3R
3000 Amp Panelboard NEMA 1/3R
480V Service Entrance Switchgear NEMA 1/3R
1600 Amp SES NEMA 1/3R
480Y/277V Switchgear NEMA 1/3R
480Y/277V SES NEMA 1/3R
2000 Amp Switchgear NEMA 1/3R
2500 Amp SES NEMA 1/3R
800 Amp Switchboard NEMA 1/3R
1000 Amp Switchboard NEMA 1/3R
208Y/120V Service Entrance Switchgear NEMA 1/3R
4000 Amp Panelboard NEMA 1/3R
1600 Amp Switchgear NEMA 1/3R
1600 Amp Panelboard NEMA 1/3R
Service Entrance Switchgear NEMA 1/3R
120/240V SES NEMA 1/3R
240/120V Switchgear NEMA 1/3R
600 Amp Switchgear NEMA 1/3R
400 Amp SES NEMA 1/3R
800 Amp Panelboard NEMA 1/3R
2000 Amp Meter Main NEMA 1/3R
Switchboard NEMA 1/3R
800 Amp SES NEMA 1/3R
4000 Amp Switchgear NEMA 1/3R
1000 Amp Panelboard NEMA 1/3R
2000 Amp Service Entrance Switchgear NEMA 1/3R
800 Amp Service Entrance Switchgear NEMA 1/3R
1200 Amp Service Entrance Switchgear NEMA 1/3R
4000 Amp Service Entrance Switchgear NEMA 1/3R
4000 Amp Meter Main NEMA 1/3R
2000 Amp Switchboard NEMA 1/3R
1600 Amp Switchboard NEMA 1/3R
800 Amp Switchgear NEMA 1/3R
3000 Amp Switchboard NEMA 1/3R
240V Service Entrance Switchgear NEMA 1/3R
1600 Amp Service Entrance Switchgear NEMA 1/3R
208Y/120V Switchgear NEMA 1/3R
3000 Amp Service Entrance Switchgear NEMA 1/3R
SES (Service Entrance Section)
1000 Amp SES NEMA 1/3R
2500 Amp Switchgear NEMA 1/3R
600 Amp SES NEMA 1/3R
600 Amp Meter Main NEMA 1/3R
3000 Amp Meter Main NEMA 1/3R
3000 Amp SES NEMA 1/3R
2000 Amp Panelboard NEMA 1/3R
3000 Amp Switchgear NEMA 1/3R
480Y/277V Service Entrance Switchgear NEMA 1/3R
1200 Amp Meter Main NEMA 1/3R
Switchgear
415/240V Switchgear NEMA 1/3R
480V Meter Main NEMA 1/3R
415/240V Meter Main NEMA 1/3R
480V Switchboard NEMA 1/3R
2500 Amp Service Entrance Switchgear NEMA 1/3R
240V SES NEMA 1/3R
480Y/277V Panelboard NEMA 1/3R
1200A Switchgear NEMA 1/3R
415/240V Service Entrance Switchgear NEMA 1/3R
2500 Amp Switchboard NEMA 1/3R
415/240V SES NEMA 1/3R
415/240V Panelboard NEMA 1/3R
120/240V Panelboard NEMA 1/3R
208Y/120V Meter Main NEMA 1/3R
480Y/277V Switchboard NEMA 1/3R
240/120V SES NEMA 1/3R
480Y/277V Panelboard NEMA 1/3R
240V Switchgear NEMA 1/3R
480V SES NEMA 1/3R
240V Meter Main NEMA 1/3R
415/240V Switchboard NEMA 1/3R
480V Switchgear NEMA 1/3R
240V Switchboard NEMA 1/3R
208Y/120V Switchboard NEMA 1/3R

Our Range of Products

1000 Amp Service Entrance Switchgear NEMA 1/3R

1000 Amp Service Entrance Switchgear NEMA 1/3R

  • 1000A service entrance switchgear unit
  • UL Listed & EUSERC Approved certified
  • NEMA 1 indoor & 3R outdoor enclosures
1200 Amp SES NEMA 1/3R

1200 Amp SES NEMA 1/3R

  • 1200A SES with multi-voltage flexibility
  • NEMA 1 & 3R indoor/outdoor enclosures
  • UL 891 Certified, EUSERC Approved unit
400 Amp Service Entrance Switchgear NEMA 1/3R

400 Amp Service Entrance Switchgear NEMA 1/3R

  • 400A service entrance switchgear unit
  • UL Listed & EUSERC Approved assembly
  • NEMA 1 indoor & 3R outdoor enclosures
1200 Amp Switchboard NEMA 1/3R

1200 Amp Switchboard NEMA 1/3R

  • 1200A switchboard for large-scale power
  • NEMA 1 indoor & 3R outdoor enclosures
  • UL Listed with seismic zone compliance
600 Amp Service Entrance Switchgear NEMA 1/3R

600 Amp Service Entrance Switchgear NEMA 1/3R

  • 600A switchgear, multi-voltage options
  • NEMA 1 indoor & 3R outdoor enclosures
  • UL Listed & EUSERC Approved assembly
400 Amp Switchboard NEMA 1/3R

400 Amp Switchboard NEMA 1/3R

  • 400A switchboard, 7 voltage options
  • NEMA 1 & 3R indoor/outdoor enclosures
  • UL 891 Certified, EUSERC Approved unit

Showing 1 to 6 of 89 results

Frequently Asked Questions

What is a service entrance panel?

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.

What's the difference between a service panel and a subpanel?

What amperage ratings are available for service entrance panels?

What voltage options are available?

Are these service entrance panels UL listed and code compliant?

Can these panels be installed outdoors?

What is the lead time and shipping policy?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Commercial Buildings

Commercial Buildings

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

Industrial & Manufacturing

Industrial & Manufacturing

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

Utility & Infrastructure

Utility & Infrastructure

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

Data Centers & Colocation

Data Centers & Colocation

UL 891-certified switchgear and switchboards deliver reliable, uninterrupted power distribution for hyperscale and enterprise data centers with mission-critical uptime requirements.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

You might also like

Why Contractors, Engineers & Facility Teams Choose DEI Power

Siemens Approved OEM Manufacturing

As a Siemens Approved OEM, every panel and switchgear assembly uses genuine Siemens components, ensuring code-compliant, precision-engineered performance on every project.

Fastest Lead Times in the Industry

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.

10+ Years of Switchgear Expertise

Over a decade building UL 891-certified power distribution equipment for commercial, industrial, and utility projects, backed by dedicated project and technical support.

Get a Quote for Your Service Entrance Panel Project

Submit your project details and a DEI Power specialist will respond with pricing, configuration guidance, and lead time within one business day.

Contact Us Today

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.