UL 891 Certified certified

UL 891 Certified

Siemens Approved OEM certified

Siemens Approved OEM

EUSERC Approved certified

EUSERC Approved

Power Panelboards | High-Capacity Electrical Distribution

DEI Power's Power Panelboards and High-Capacity Electrical Distribution lineup includes UL 891-certified panelboards, switchboards, switchgear, remote power panels, service entrance switchgear, and SES units. Ranging from 400A to 4000A, these assemblies serve commercial, industrial, utility, data center, and healthcare applications with genuine Siemens components and NEMA 1/3R enclosures.

1000 Amp Service Entrance Switchgear NEMA 1/3R
240V Switchgear 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
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
480Y/277V Switchgear 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
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
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
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
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
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
120/240V Panelboard NEMA 1/3R
480Y/277V Panelboard NEMA 1/3R
208Y/120V Switchboard 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

Our Range of Products

1000 Amp Service Entrance Switchgear NEMA 1/3R

1000 Amp Service Entrance Switchgear NEMA 1/3R

  • 1000A capacity for high-demand systems
  • NEMA 1 indoor & 3R outdoor enclosures
  • UL Listed & seismic zone compliant
240V Switchgear NEMA 1/3R

240V Switchgear NEMA 1/3R

  • 240V switchgear across full amperage range
  • UL Listed & EUSERC Approved for compliance
  • NEMA 1 & 3R enclosures for any installation site
400 Amp Service Entrance Switchgear NEMA 1/3R

400 Amp Service Entrance Switchgear NEMA 1/3R

  • 400A service entrance, multi-voltage
  • NEMA 1 indoor & 3R outdoor enclosures
  • UL Listed & EUSERC Approved certified
1200 Amp Switchboard NEMA 1/3R

1200 Amp Switchboard NEMA 1/3R

  • 1200A multi-voltage switchboard design
  • UL Listed & EUSERC approved assembly
  • NEMA 1 & 3R enclosure configurations
600 Amp Service Entrance Switchgear NEMA 1/3R

600 Amp Service Entrance Switchgear NEMA 1/3R

  • 600A rated service entrance switchgear
  • UL Listed & EUSERC certified assembly
  • NEMA 1 & 3R enclosure configurations
400 Amp Switchboard NEMA 1/3R

400 Amp Switchboard NEMA 1/3R

  • 400A capacity for commercial & industrial use
  • NEMA 1 & 3R enclosures for flexible installation
  • UL 891 Certified & EUSERC Approved assembly

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Frequently Asked Questions

What is a power panelboard?

A power panelboard is a high-capacity electrical distribution assembly that receives power from a utility or transformer and distributes it to multiple branch circuits or downstream loads. Unlike lighting and appliance panels, power panelboards are rated for larger amperage loads — typically 400A and above — and are used in commercial, industrial, data center, and utility applications requiring heavy-duty, code-compliant power distribution.

What is the main difference between a lighting and appliance panelboard and a power panelboard?

What amperage ratings are available for DEI Power panelboards?

What certifications do DEI Power panelboards and distribution equipment carry?

What NEMA enclosure types are available?

How quickly can I receive a power panelboard or switchgear assembly?

Can DEI Power build panelboards to custom voltage and utility specifications?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Data Centers & Colocation

Data Centers & Colocation

Remote power panels and switchgear designed for hyperscale, enterprise, and edge data center power distribution.

Commercial Buildings

Commercial Buildings

Power panelboards and switchboards delivering reliable, code-compliant electrical distribution for commercial facilities.

Industrial & Manufacturing

Industrial & Manufacturing

High-amperage switchgear and panelboards engineered for continuous operation in demanding industrial plant environments.

Healthcare & Critical Facilities

Healthcare & Critical Facilities

UL 891-certified distribution assemblies supporting imaging equipment, life-safety loads, and mission-critical healthcare power.

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

Fastest Lead Times in the Industry

In-house manufacturing at our 50,000 sq. ft. Ontario, CA facility means most orders ship within 1 business day, with built-to-order units in 4–6 weeks.

Siemens OEM Precision & UL 891 Quality

Every panelboard and distribution assembly is built with genuine Siemens components and UL 891 certification, ensuring code compliance and long-term field reliability.

Dedicated Project & Technical Support

From initial quote to post-installation, our specialists provide engineering guidance, accurate submittals, and coordinated delivery to keep your project on schedule.

Get a Quote on Power Panelboards & Distribution Equipment

Submit your project specs and a DEI Power specialist will respond with pricing, submittals, and delivery details — typically same 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.