UL 891 Certified certified

UL 891 Certified

Siemens Approved OEM certified

Siemens Approved OEM

EUSERC Approved certified

EUSERC Approved

3-Phase Distribution Panels | Multi-Phase Power Solutions

DEI Power's 3-Phase Distribution Panels category encompasses a comprehensive range of switchboards, switchgear, panelboards, remote power panels, service entrance sections, and meter mains. Built with genuine Siemens components and UL 891 certified, these solutions serve data centers, commercial buildings, industrial facilities, and utility infrastructure across amperages from 225A to 4000A.

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
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
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
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
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
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
480V Meter Main NEMA 1/3R
415/240V Meter Main NEMA 1/3R
240V Meter Main NEMA 1/3R
240V SES NEMA 1/3R
415/240V 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 switchgear rated
  • UL 891 certified & EUSERC compliant unit
  • Seismic rated: UBC, CBC & IBC compliant
240V Switchgear NEMA 1/3R

240V Switchgear NEMA 1/3R

  • 240V switchgear, scalable amperage range
  • NEMA 1 & 3R indoor/outdoor enclosures
  • UL Listed & EUSERC seismic approved
1200 Amp SES NEMA 1/3R

1200 Amp SES NEMA 1/3R

  • 1200A main breaker SES configuration
  • 7 voltage options from 120V to 480V
  • UL 891 & EUSERC Approved certified
400 Amp Service Entrance Switchgear NEMA 1/3R

400 Amp Service Entrance Switchgear NEMA 1/3R

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

1200 Amp Switchboard NEMA 1/3R

  • 1200A switchboard, Siemens components
  • NEMA 1 & 3R indoor/outdoor enclosures
  • UL Listed & EUSERC seismic approved
600 Amp Service Entrance Switchgear NEMA 1/3R

600 Amp Service Entrance Switchgear NEMA 1/3R

  • 600A service entrance switchgear rating
  • UL Listed & EUSERC Approved assembly
  • NEMA 1 indoor & 3R outdoor enclosures

Showing 1 to 6 of 100 results

Frequently Asked Questions

What does a 3-phase panel look like?

A 3-phase distribution panel is a metal enclosure — typically NEMA 1 (indoor) or NEMA 3R (outdoor) — containing a main circuit breaker, bus bars for each of the three phases, and rows of branch circuit breakers. Panels in this category measure approximately 14" D × 30" W × 90" H, are wall-mounted or floor-standing, and include labeled terminal connections for voltage configurations such as 208Y/120V, 480Y/277V, or 415/240V.

What voltage configurations are available for 3-phase panels?

What amperage ratings are available?

Are these panels UL listed and code compliant?

What is the difference between a switchboard, switchgear, and a panelboard?

How quickly can 3-phase panels be delivered?

Can panels be customized for specific project requirements?

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

RPPs, switchboards, and switchgear power hyperscale, enterprise, and colocation data center rows and AI compute clusters.

Commercial Buildings

Commercial Buildings

Panelboards, switchboards, and meter mains manage multi-floor electrical distribution in offices, campuses, and mixed-use facilities.

Industrial & Manufacturing

Industrial & Manufacturing

Heavy-duty switchgear and service entrance equipment control large electrical loads in plants, processing facilities, and factories.

Healthcare & Critical Facilities

Healthcare & Critical Facilities

UL 891 certified panels support life-safety branch loads, imaging equipment, and mission-critical power in hospitals and medical facilities.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

You might also like

Why Data Centers & Industrial Facilities Choose DEI Power

Fastest Lead Times in the Industry

In-stock panels ship within 1 business day from our 50,000 sq. ft. Ontario, CA facility, with built-to-order configs in 4–6 weeks — beating the 16-week industry average.

Siemens OEM Quality, USA-Built

Every panel is manufactured with genuine Siemens components at our domestic facility, UL 891 certified, BABA compliant, and engineered for long-term reliability in mission-critical environments.

Dedicated Project & Technical Support

From spec review to on-site delivery coordination, our specialists provide 24/7 support, fast quotes, organized submittals, and hands-on guidance throughout your entire project lifecycle.

Get a Fast Quote on 3-Phase Distribution Panels

Submit your project details and an RPP or switchgear specialist will respond promptly with pricing, submittals, and delivery options.

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.