UL 891 Certified certified

UL 891 Certified

EUSERC Approved certified

EUSERC Approved

Siemens Approved OEM certified

Siemens Approved OEM

Custom Switchboard Equipment | Engineered Electrical Solutions

DEI Power offers a comprehensive range of custom switchboard equipment and engineered electrical solutions, including switchboards, switchgear, and service entrance equipment. Built with genuine Siemens components, UL 891 certified, and EUSERC approved, these solutions serve commercial, industrial, and utility applications from 400A to 4000A.

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
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
4000 Amp Switchgear NEMA 1/3R
480V Service Entrance Switchgear NEMA 1/3R
480Y/277V Switchgear NEMA 1/3R
480V Switchboard 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
2500 Amp Service Entrance Switchgear NEMA 1/3R
1600 Amp Switchgear NEMA 1/3R
Service Entrance Switchgear NEMA 1/3R
240/120V Switchgear NEMA 1/3R
600 Amp Switchgear NEMA 1/3R
400 Amp SES NEMA 1/3R
415/240V Switchgear NEMA 1/3R
1200A Switchgear NEMA 1/3R
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
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
208Y/120V Switchgear NEMA 1/3R
3000 Amp Service Entrance Switchgear NEMA 1/3R
480V Switchgear NEMA 1/3R
240V Switchboard NEMA 1/3R
1000 Amp SES NEMA 1/3R
2500 Amp Switchgear NEMA 1/3R
208Y/120V Switchboard NEMA 1/3R
3000 Amp Switchgear NEMA 1/3R
480Y/277V SES NEMA 1/3R
480V SES NEMA 1/3R
208Y/120V Service Entrance Switchgear NEMA 1/3R
415/240V Switchboard NEMA 1/3R
480Y/277V Switchboard NEMA 1/3R
480Y/277V Service Entrance Switchgear NEMA 1/3R
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 service entrance, multi-voltage options
  • UL Listed & EUSERC Approved, seismic rated
  • Genuine Siemens components ensure reliability
240V Switchgear NEMA 1/3R

240V Switchgear NEMA 1/3R

  • 240V switchgear, 400A to 4000A range
  • UL Listed & EUSERC Approved for compliance
  • NEMA 1 & 3R enclosures for any environment
400 Amp Service Entrance Switchgear NEMA 1/3R

400 Amp Service Entrance Switchgear NEMA 1/3R

  • Rated 400A, UL 891 code-compliant
  • NEMA 1 indoor & 3R outdoor enclosures
  • Genuine Siemens components installed
1200 Amp Switchboard NEMA 1/3R

1200 Amp Switchboard NEMA 1/3R

  • 1200A rated for industrial distribution
  • UL Listed & EUSERC Approved certified
  • NEMA 1 indoor & 3R outdoor enclosures
600 Amp Service Entrance Switchgear NEMA 1/3R

600 Amp Service Entrance Switchgear NEMA 1/3R

  • 600A service entrance, UL Listed
  • NEMA 1 indoor & 3R outdoor enclosures
  • EUSERC Approved, seismic zones covered
400 Amp Switchboard NEMA 1/3R

400 Amp Switchboard NEMA 1/3R

  • Rated 400A with multi-voltage options
  • NEMA 1 indoor & 3R outdoor enclosures
  • UL 891 & EUSERC Approved certified

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Frequently Asked Questions

How much does it cost to upgrade my switchboard?

Switchboard upgrade costs vary based on amperage rating, voltage configuration, enclosure type (NEMA 1 or NEMA 3R), and any custom specifications required by your utility. DEI Power's switchboards range from 400A to 4000A and span multiple voltage options. Pricing is available on request — contact a specialist for an accurate project quote tailored to your application.

What amperage options are available for DEI Power switchboards?

What voltage configurations do your switchboards support?

Are DEI Power switchboards UL listed and code compliant?

What is the difference between a switchboard and switchgear?

What is a Service Entrance Section (SES) and when do I need one?

How long does it take to receive a custom switchboard order?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Commercial Buildings & Campuses

Commercial Buildings & Campuses

Switchboards and switchgear provide safe, reliable power distribution for office complexes, retail centers, and multi-tenant facilities.

Industrial & Manufacturing

Industrial & Manufacturing

Heavy-duty switchgear rated up to 4000A handles high electrical loads across manufacturing plants and processing facilities.

Utility & Infrastructure

Utility & Infrastructure

EUSERC-approved service entrance switchgear engineered to meet utility specifications for substations and infrastructure projects.

Data Centers & Colocation

Data Centers & Colocation

UL 891-certified switchgear ensures uninterrupted, high-capacity power distribution for hyperscale and enterprise data centers.

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 OEM Precision Manufacturing

As an approved Siemens OEM with 10+ years of experience, DEI Power manufactures UL 891-certified switchgear using genuine Siemens components for guaranteed reliability and code compliance.

Fastest Lead Times in the Industry

DEI Power's 50,000 sq. ft. in-house manufacturing facility in Ontario, CA enables faster builds, fewer delays, and free shipping with delivery in 3–5 business days nationwide.

Custom Specs & Dedicated Project Support

Every switchboard is built to your exact voltage, amperage, and jobsite requirements. Dedicated project support and technical experts help reduce change orders and field adjustments.

Get a Custom Switchboard Quote for Your Project

Submit your project details and a DEI Power specialist will respond with configuration guidance and pricing 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.