UL 891 Certified certified

UL 891 Certified

Siemens Approved OEM certified

Siemens Approved OEM

EUSERC Approved certified

EUSERC Approved

NEMA 1 Enclosures & Boxes

DEI Power's NEMA 1 Enclosures & Boxes category includes UL 891-certified panelboards, switchgear, switchboards, meter mains, service entrance sections, and remote power panels designed for indoor commercial, industrial, data center, and utility power distribution applications. Built with genuine Siemens components and rated from 225A to 4000A across multiple voltage configurations.

240V Switchgear NEMA 1/3R
1200 Amp SES NEMA 1/3R
480Y/277V Meter Main 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
3000 Amp Panelboard 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
2500 Amp Service Entrance Switchgear NEMA 1/3R
Remote Power Panels - 800A
1600 Amp Switchgear 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
400 Amp SES NEMA 1/3R
800 Amp Panelboard NEMA 1/3R
415/240V Switchgear NEMA 1/3R
1200A Switchgear NEMA 1/3R
Switchboard NEMA 1/3R
480V 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
240/120V Meter Main NEMA 1/3R
1200 Amp Service Entrance Switchgear NEMA 1/3R
2000 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
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
2500 Amp Switchgear NEMA 1/3R
600 Amp SES NEMA 1/3R
600 Amp Meter Main NEMA 1/3R
208Y/120V Switchboard NEMA 1/3R
3000 Amp SES 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
400 Amp Service Entrance Switchgear NEMA 1/3R
1200 Amp Switchboard NEMA 1/3R
600 Amp Service Entrance Switchgear NEMA 1/3R
2000 Amp SES NEMA 1/3R
480V Meter Main NEMA 1/3R
240V Panelboard NEMA 1/3R
4000 Amp Switchgear NEMA 1/3R
415/240V Meter Main NEMA 1/3R
240V Meter Main NEMA 1/3R
1600 Amp Meter Main NEMA 1/3R
600 Amp Switchgear NEMA 1/3R
240V SES NEMA 1/3R
208Y/120V Panelboard NEMA 1/3R
480Y/277V Panelboard NEMA 1/3R
800 Amp SES NEMA 1/3R
4000 Amp Service Entrance Switchgear NEMA 1/3R
4000 Amp Meter Main NEMA 1/3R
1600 Amp Switchboard NEMA 1/3R
415/240V SES NEMA 1/3R
480V Panelboard NEMA 1/3R
415/240V Panelboard NEMA 1/3R
120/240V Meter Main NEMA 1/3R
120/240V Panelboard NEMA 1/3R
208Y/120V Meter Main NEMA 1/3R
1200 Amp Meter Main NEMA 1/3R
480Y/277V Panelboard NEMA 1/3R
400 Amp Panelboard NEMA 1/3R
800 Amp Meter Main NEMA 1/3R
4000 Amp Panelboard NEMA 1/3R
1600 Amp Panelboard NEMA 1/3R
2500 Amp Panelboard 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
2000 Amp Panelboard NEMA 1/3R
2500 Amp Meter Main NEMA 1/3R

Our Range of Products

240V Switchgear NEMA 1/3R

240V Switchgear NEMA 1/3R

  • 240V switchgear, NEMA 1 or 3R rated
  • UL Listed, EUSERC approved switchgear
  • Genuine Siemens components throughout
1200 Amp SES NEMA 1/3R

1200 Amp SES NEMA 1/3R

  • 1200A SES for heavy commercial loads
  • UL listed & EUSERC approved assembly
  • Multi-voltage: 120V to 480Y/277V options
480Y/277V Meter Main NEMA 1/3R

480Y/277V Meter Main NEMA 1/3R

  • 480Y/277V meter main, scalable to 4000A
  • UL Listed with genuine Siemens components
  • NEMA 1/3R rated, all seismic zones covered
400 Amp Switchboard NEMA 1/3R

400 Amp Switchboard NEMA 1/3R

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

240/120V Switchboard NEMA 1/3R

  • 240/120V rated for commercial distribution
  • UL listed with EUSERC approval
  • Seismic-compliant: UBC, CBC & IBC zones
600 Amp Switchboard NEMA 1/3R

600 Amp Switchboard NEMA 1/3R

  • 600A switchboard, multi-voltage support
  • UL 891 certified, EUSERC approved unit
  • Free shipping, ships within 1 business day

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Frequently Asked Questions

What does NEMA 1 enclosure mean?

A NEMA 1 enclosure is rated for general-purpose indoor use, providing protection against contact with the enclosed equipment and against falling dirt. It is not designed to withstand moisture, rain, or outdoor conditions. NEMA 1 enclosures — including panelboards, switchgear, switchboards, and remote power panels — are the standard choice for clean, dry interior environments such as commercial buildings, data centers, and industrial facilities.

What is the difference between NEMA 1 and NEMA 3?

What amperage ratings are available for NEMA 1 enclosures?

What voltage configurations are supported?

Are these NEMA 1 enclosures UL listed?

What product types are available in NEMA 1 configurations?

How quickly can NEMA 1 enclosures ship?

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 1 panelboards, switchboards, and meter mains distribute power reliably across office buildings and campuses.

Data Centers & Colocation

Data Centers & Colocation

Remote power panels and switchgear provide structured branch circuit distribution for data center and colocation loads.

Industrial & Manufacturing

Industrial & Manufacturing

Heavy-duty switchboards and service entrance switchgear handle large electrical loads in industrial plant environments.

Healthcare Facilities

Healthcare Facilities

UL 891-certified NEMA 1 enclosures support critical life-safety branch loads and imaging equipment in healthcare settings.

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

Fastest Lead Times in the Industry

In-house manufacturing at our 50,000 sq. ft. Ontario, CA facility means faster builds, fewer delays, and most orders shipping within 1 business day.

Siemens OEM – UL 891 Certified

As an approved Siemens OEM, every NEMA 1 enclosure is built with genuine Siemens components and certified to UL 891 standards for code-compliant performance.

Dedicated Project & Technical Support

From configuration to delivery, our specialists provide dedicated project support, custom engineering guidance, and 24/7 availability to keep your project on schedule.

Get a Quote on NEMA 1 Enclosures Today

Submit your project details and an expert will respond with pricing, configuration options, 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.