UL 891 Certified certified

UL 891 Certified

Siemens Approved OEM certified

Siemens Approved OEM

EUSERC Approved certified

EUSERC Approved

Distribution Panelboards | Custom & Standard Configurations

DEI Power's distribution panelboards deliver reliable, code-compliant power distribution for commercial, industrial, and utility applications. Built with genuine Siemens components, available in NEMA 1 and NEMA 3R enclosures, and UL 891 certified, these panelboards support amperage ranges from 400A to 4000A across multiple voltage configurations.

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

Our Range of Products

240V Switchgear NEMA 1/3R

240V Switchgear NEMA 1/3R

  • 240V / 240/120V voltage configuration
  • NEMA 1 indoor & NEMA 3R outdoor rated
  • UL Listed & EUSERC Approved assembly
1200 Amp SES NEMA 1/3R

1200 Amp SES NEMA 1/3R

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

400 Amp Service Entrance Switchgear NEMA 1/3R

  • 400A rated for commercial & industrial use
  • NEMA 1 indoor & 3R outdoor enclosures
  • UL Listed with genuine Siemens components
1200 Amp Switchboard NEMA 1/3R

1200 Amp Switchboard NEMA 1/3R

  • 1200A switchboard, multi-voltage support
  • UL Listed & EUSERC Approved certified
  • Heavy-duty 300lb long-life construction
400 Amp Switchboard NEMA 1/3R

400 Amp Switchboard NEMA 1/3R

  • 400A switchboard with 7 voltage options
  • NEMA 1 & 3R enclosures, indoor or outdoor
  • UL 891 & EUSERC certified for compliance
240/120V Switchboard NEMA 1/3R

240/120V Switchboard NEMA 1/3R

  • 240/120V switchboard, all amperage ranges
  • UL Listed & EUSERC Approved compliance
  • Seismic compliant: UBC, CBC, IBC rated

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Frequently Asked Questions

What is a distribution panelboard?

A distribution panelboard is an electrical enclosure that receives power from a utility or main service entrance and distributes it to multiple branch circuits throughout a facility. It houses circuit breakers or fuses that provide overcurrent protection for each circuit, enabling safe and organized power distribution in commercial, industrial, and utility settings.

What does a distribution board do?

What amperage ranges are available for distribution panelboards?

What voltage configurations are available?

What certifications do DEI Power panelboards carry?

What is the difference between NEMA 1 and NEMA 3R enclosures?

How quickly can a distribution panelboard be shipped?

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 distribute power safely across lighting, HVAC, and tenant loads in high-demand commercial facilities.

Industrial & Manufacturing

Industrial & Manufacturing

Heavy-duty panelboards manage large electrical loads and protect critical machinery in industrial and manufacturing plants.

Utility & Infrastructure

Utility & Infrastructure

EUSERC-approved panelboards meet utility specifications for service entrance and infrastructure power distribution projects.

Data Centers & Colocation

Data Centers & Colocation

UL 891 certified panelboards and remote power panels provide structured, reliable branch circuit distribution for critical data center loads.

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 Choose DEI Power

Siemens OEM-Approved Manufacturing

Every panelboard is built with genuine Siemens components as an approved OEM, ensuring code-compliant assemblies that pass inspections and perform reliably in the field.

Fastest Lead Times in the Industry

Manufactured and stocked in our 50,000 sq. ft. Ontario, CA facility, most orders ship within 1 business day — keeping your project timelines on track.

Custom Configurations, Built to Spec

From 400A to 4000A across multiple voltage options and NEMA ratings, we configure every panelboard to meet your exact project, utility, and jobsite requirements.

Get a Quote on Your Distribution Panelboard

Submit your project details and a DEI Power specialist will respond with a custom quote, configuration guidance, and lead time confirmation.

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.