UL 891 Certified certified

UL 891 Certified

EUSERC Approved certified

EUSERC Approved

Siemens Approved OEM certified

Siemens Approved OEM

Service Disconnect Switches | Code-Compliant Service Entrance

DEI Power's Service Disconnect Switches and Service Entrance Sections provide code-compliant power distribution for commercial, industrial, and utility applications. Built with genuine Siemens components, UL 891 certified, and EUSERC approved, these assemblies are available in amperage ratings from 400A to 4000A with NEMA 1 and NEMA 3R enclosure options.

1000 Amp Service Entrance Switchgear NEMA 1/3R
1200 Amp SES NEMA 1/3R
400 Amp Service Entrance Switchgear NEMA 1/3R
600 Amp Service Entrance Switchgear NEMA 1/3R
2000 Amp SES NEMA 1/3R
4000 Amp SES NEMA 1/3R
240/120V Service Entrance Switchgear NEMA 1/3R
480V Service Entrance Switchgear NEMA 1/3R
1600 Amp SES NEMA 1/3R
480Y/277V SES NEMA 1/3R
2500 Amp SES NEMA 1/3R
480V SES NEMA 1/3R
208Y/120V Service Entrance Switchgear NEMA 1/3R
2500 Amp Service Entrance Switchgear NEMA 1/3R
Service Entrance Switchgear NEMA 1/3R
120/240V SES NEMA 1/3R
400 Amp SES NEMA 1/3R
240V SES NEMA 1/3R
800 Amp SES NEMA 1/3R
415/240V Service Entrance Switchgear 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
415/240V SES NEMA 1/3R
240V Service Entrance Switchgear NEMA 1/3R
1600 Amp Service Entrance Switchgear NEMA 1/3R
3000 Amp Service Entrance Switchgear NEMA 1/3R
SES (Service Entrance Section)
1000 Amp SES NEMA 1/3R
600 Amp SES NEMA 1/3R
3000 Amp SES 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 capacity for commercial/industrial
  • NEMA 1 & 3R weatherproof enclosures
  • UL Listed & EUSERC Approved assembly
1200 Amp SES NEMA 1/3R

1200 Amp SES NEMA 1/3R

  • 1200A multi-voltage SES, main breaker
  • UL 891 Certified & EUSERC Approved
  • NEMA 1 indoor or NEMA 3R outdoor rated
400 Amp Service Entrance Switchgear NEMA 1/3R

400 Amp Service Entrance Switchgear NEMA 1/3R

  • 400A UL Listed switchgear assembly
  • NEMA 1 indoor or NEMA 3R outdoor rated
  • Meets UBC, CBC & IBC seismic standards
600 Amp Service Entrance Switchgear NEMA 1/3R

600 Amp Service Entrance Switchgear NEMA 1/3R

  • 600A UL Listed switchgear assembly
  • NEMA 1 indoor or NEMA 3R outdoor rated
  • Meets UBC, CBC & IBC seismic standards
2000 Amp SES NEMA 1/3R

2000 Amp SES NEMA 1/3R

  • 2000A SES for large-scale power needs
  • NEMA 1 & 3R dual enclosure flexibility
  • EUSERC Approved, UL 891 certified unit
4000 Amp SES NEMA 1/3R

4000 Amp SES NEMA 1/3R

  • 4000A capacity for critical load control
  • UL 891 Certified & EUSERC Approved
  • NEMA 1 indoor or NEMA 3R outdoor rated

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Frequently Asked Questions

What does a service disconnect switch do?

A service disconnect switch provides the means to safely disconnect all power from a building or facility at the utility service entrance. It allows utility workers, electricians, and facility personnel to de-energize the entire electrical system during maintenance, emergencies, or inspections. Code requires a service disconnect to be located at a readily accessible location near the point of utility entry.

What is the difference between a Service Entrance Section (SES) and Service Entrance Switchgear?

What amperage ratings are available for service entrance sections and switchgear?

What voltage configurations are supported?

Are DEI Power service entrance products EUSERC approved?

What enclosure options are available for indoor and outdoor installations?

Do service entrance assemblies need to be built to specific utility specifications?

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

Service entrance sections sized 400A–4000A support power distribution for office complexes, retail centers, and campuses.

Industrial & Manufacturing

Industrial & Manufacturing

Heavy-duty SES and switchgear assemblies manage large electrical loads in plants, factories, and processing facilities.

Utility & Infrastructure

Utility & Infrastructure

EUSERC-approved service entrance equipment supports substations, grid tie-ins, and critical utility infrastructure projects.

Data Centers & Healthcare

Data Centers & Healthcare

Code-compliant service disconnects ensure continuous, reliable power for mission-critical data center and healthcare environments.

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

UL 891 Certified Assemblies

Every service entrance section and switchgear assembly is UL 891 certified and EUSERC approved, ensuring full code compliance and reliable field performance.

Siemens OEM Precision & Speed

As an approved Siemens OEM operating from a 50,000 sq. ft. facility, DEI Power delivers faster builds, fewer delays, and industry-leading lead times.

Dedicated Project Support

From configuration guidance and specialist consultation to accurate documentation, DEI Power reduces change orders and keeps your project on schedule.

Get a Quote for Your Service Entrance Project

Submit your requirements and an SES specialist will respond with configuration guidance, compliance details, and project pricing.

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.