UL 891 Certified certified

UL 891 Certified

EUSERC Approved certified

EUSERC Approved

Siemens Approved OEM certified

Siemens Approved OEM

3 Phase NEMA 3R Electrical Panels

3 Phase NEMA 3R Electrical Panels from DEI Power include switchgear, switchboards, panelboards, meter mains, and service entrance sections built with genuine Siemens components. Available in amperage ratings from 400A to 4000A and multiple voltage configurations, all assemblies are UL 891 certified, EUSERC approved, and rated for outdoor weather-resistant installation.

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
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
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
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
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
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
208Y/120V Meter Main 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
240/120V SES NEMA 1/3R
1200 Amp Meter Main NEMA 1/3R
800 Amp Meter Main NEMA 1/3R
1200 Amp Meter Main NEMA 1/3R
1000 Amp Meter Main NEMA 1/3R
400 Amp Meter Main NEMA 1/3R
3000 Amp Meter Main NEMA 1/3R
2500 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 switchgear for industrial systems
  • UL 891 Certified & EUSERC Approved
  • Seismic compliant: UBC, CBC, and IBC
240V Switchgear NEMA 1/3R

240V Switchgear NEMA 1/3R

  • 240V switchgear, UL Listed for compliance
  • NEMA 3R outdoor weather-resistant rated
  • Genuine Siemens components, built to last
1200 Amp SES NEMA 1/3R

1200 Amp SES NEMA 1/3R

  • 1200A SES with amperage options up to 4000A
  • Multi-voltage: 120/240V through 480Y/277V
  • UL 891, EUSERC & all seismic zones certified
400 Amp Service Entrance Switchgear NEMA 1/3R

400 Amp Service Entrance Switchgear NEMA 1/3R

  • 400A service entrance switchgear unit
  • NEMA 3R outdoor weather-resistant enclosure
  • UL Listed & seismic zone compliant
1200 Amp Switchboard NEMA 1/3R

1200 Amp Switchboard NEMA 1/3R

  • 1200A switchboard for mid-large facilities
  • Multi-voltage: 120/240V to 480Y/277V
  • UL Listed & EUSERC Approved assembly
600 Amp Service Entrance Switchgear NEMA 1/3R

600 Amp Service Entrance Switchgear NEMA 1/3R

  • 600A service entrance, NEMA 1 or 3R
  • UL Listed & EUSERC Approved certified
  • Seismic compliant: UBC, CBC, and IBC

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Frequently Asked Questions

What is a NEMA 3R electrical panel enclosure rating?

NEMA 3R is an enclosure rating designating protection against rain, sleet, and external ice formation, making it suitable for outdoor and weather-exposed installations. Unlike NEMA 1 indoor enclosures, NEMA 3R panels are built to withstand direct exposure to the elements while protecting internal electrical components from corrosion and moisture ingress.

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

What amperage ranges are available for 3 Phase NEMA 3R electrical panels?

What voltage options are available for these 3 phase panels?

Are these panels UL listed and code compliant?

What product types are included in the 3 Phase NEMA 3R panel lineup?

How quickly can DEI Power ship a 3 Phase NEMA 3R electrical panel?

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

NEMA 3R panels provide reliable outdoor-rated power distribution for office buildings, retail centers, and campuses.

Industrial & Manufacturing

Industrial & Manufacturing

Heavy-duty NEMA 3R switchgear and panelboards support large electrical load control in manufacturing plants and processing facilities.

Utility & Infrastructure

Utility & Infrastructure

EUSERC-approved service entrance switchgear and SES panels meet utility specifications for substations and infrastructure projects.

Data Centers & Colocation

Data Centers & Colocation

High-amperage switchgear and panelboards deliver dependable power distribution for hyperscale and enterprise data center facilities.

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

In-House OEM Manufacturing

As a Siemens Approved OEM operating from a 50,000 sq. ft. facility in Ontario, CA, DEI Power builds every panel with genuine Siemens components for verifiable quality and code compliance.

Fastest Lead Times in the Industry

In-house switchgear manufacturing and a large stocked warehouse enable most orders to ship within 1 business day, delivered in 3–5 business days with free shipping nationwide.

UL 891 & Seismic Code Compliant

Every panel is UL 891 certified, EUSERC approved, and engineered to meet UBC, CBC, and IBC seismic zone requirements, simplifying specification and reducing field change orders.

Get a Quote for Your NEMA 3R Panel Project

Submit your project specs and a DEI Power specialist will respond with pricing, configuration guidance, and lead time 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.