UL 891 Certified certified

UL 891 Certified

Siemens Approved OEM certified

Siemens Approved OEM

EUSERC Approved certified

EUSERC Approved

Electrical Distribution Box Manufacturers

DEI Power offers a comprehensive range of electrical distribution boxes including panelboards, switchboards, switchgear, service entrance sections, meter mains, and remote power panels. Built with genuine Siemens components and UL 891 certified, these products serve commercial, industrial, utility, and data center applications across the USA.

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

Our Range of Products

1000 Amp Service Entrance Switchgear NEMA 1/3R

1000 Amp Service Entrance Switchgear NEMA 1/3R

  • 1000A capacity for critical power systems
  • NEMA 1 & 3R for indoor and outdoor installs
  • UL 891 certified, EUSERC & seismic compliant
240V Switchgear NEMA 1/3R

240V Switchgear NEMA 1/3R

  • 240V rated for wide-range amperage scalability
  • NEMA 1 & 3R indoor/outdoor enclosures
  • UL Listed & EUSERC Approved switchgear
1200 Amp SES NEMA 1/3R

1200 Amp SES NEMA 1/3R

  • 1200A with multi-voltage configuration options
  • NEMA 1/3R, UL 891 & EUSERC certified
  • Free shipping, ships within 1 business day
400 Amp Service Entrance Switchgear NEMA 1/3R

400 Amp Service Entrance Switchgear NEMA 1/3R

  • 400A service entrance, multi-voltage ready
  • NEMA 1 & 3R for indoor/outdoor installs
  • UL Listed with genuine Siemens components
1200 Amp Switchboard NEMA 1/3R

1200 Amp Switchboard NEMA 1/3R

  • 1200A heavy-duty switchboard construction
  • NEMA 1 & 3R enclosures for all environments
  • UL Listed & EUSERC Approved for compliance
600 Amp Service Entrance Switchgear NEMA 1/3R

600 Amp Service Entrance Switchgear NEMA 1/3R

  • 600A switchgear for demanding environments
  • NEMA 1 & 3R weatherproof enclosure choice
  • UL Listed, EUSERC Approved, seismic rated

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Frequently Asked Questions

What company makes electrical boxes?

DEI Power manufactures electrical distribution boxes including panelboards, switchboards, switchgear, service entrance sections, meter mains, and remote power panels. All products are built with genuine Siemens components under Siemens-approved OEM authorization at their 50,000 sq. ft. facility in Ontario, California, and are UL 891 certified.

What are the names of distribution boxes?

What amperage ranges are available for electrical distribution boxes?

What NEMA ratings are available for electrical distribution boxes?

What certifications do DEI Power's electrical distribution boxes carry?

What voltage configurations are supported by DEI Power's distribution boxes?

How quickly do electrical distribution boxes ship from DEI Power?

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

Panelboards, switchboards, and meter mains distribute power reliably across office buildings, campuses, and retail facilities.

Industrial & Manufacturing

Industrial & Manufacturing

Heavy-duty switchgear and switchboards manage large electrical loads and protect critical systems in manufacturing operations.

Data Centers & Colocation

Data Centers & Colocation

Remote power panels and switchgear provide structured branch circuit distribution for server rooms, colocation rows, and AI compute pods.

Utility & Infrastructure

Utility & Infrastructure

Service entrance switchgear and SES units built to utility specifications for substations, grid infrastructure, and critical power systems.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

You might also like

Why Commercial & Industrial Facilities Choose DEI Power

Siemens-Approved OEM Manufacturing

Every distribution box is built with genuine Siemens components under OEM authorization, ensuring code compliance, long service life, and trusted performance in critical power environments.

Industry-Leading Fulfillment Speed

Stocked from a 50,000 sq. ft. facility in Ontario, California, most orders ship within 1 business day — keeping your project timelines intact with minimal risk of delays.

10+ Years of Switchgear Expertise

With over a decade of experience manufacturing UL 891-certified switchgear for commercial, industrial, and utility clients, DEI Power delivers precision-engineered solutions that perform reliably in the field.

Get a Quote on Electrical Distribution Boxes Today

Submit your project requirements and an expert will respond with pricing, specs, and lead time guidance 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.