UL 891 Certified certified

UL 891 Certified

EUSERC Approved certified

EUSERC Approved

Siemens Approved OEM certified

Siemens Approved OEM

800 Amp Main Distribution Panels | Large-Facility Power Distribution

DEI Power's 800 Amp Main Distribution Panels category encompasses UL 891-certified switchgear, switchboards, panelboards, service entrance sections, and meter mains engineered for large-facility power distribution. Built with genuine Siemens components, these NEMA 1/3R assemblies serve commercial, industrial, and utility applications requiring reliable, code-compliant 800A power management.

Switchgear
480V Service Entrance Switchgear NEMA 1/3R
2500 Amp SES NEMA 1/3R
800 Amp Switchboard NEMA 1/3R
1000 Amp Switchboard NEMA 1/3R
Service Entrance Switchgear NEMA 1/3R
240/120V Switchgear NEMA 1/3R
800 Amp Panelboard NEMA 1/3R
Switchboard NEMA 1/3R
415/240V Service Entrance Switchgear NEMA 1/3R
800 Amp Service Entrance Switchgear NEMA 1/3R
800 Amp Switchgear NEMA 1/3R
208Y/120V Switchgear NEMA 1/3R
SES (Service Entrance Section)
1000 Amp SES NEMA 1/3R
Panelboard NEMA 1/3R
480Y/277V Switchboard NEMA 1/3R
800 Amp Meter Main NEMA 1/3R
480V Switchboard NEMA 1/3R
800 Amp SES NEMA 1/3R
120/240V Meter Main NEMA 1/3R
480Y/277V Switchgear NEMA 1/3R
480Y/277V SES NEMA 1/3R
208Y/120V Service Entrance Switchgear NEMA 1/3R
120/240V SES NEMA 1/3R
415/240V Switchboard NEMA 1/3R
208Y/120V Meter Main NEMA 1/3R
480Y/277V Service Entrance Switchgear NEMA 1/3R
240/120V SES NEMA 1/3R
240/120V Service Entrance Switchgear NEMA 1/3R
415/240V Switchgear NEMA 1/3R
240V Service Entrance Switchgear NEMA 1/3R
480V SES NEMA 1/3R
1000 Amp Meter Main NEMA 1/3R
2500 Amp Meter Main NEMA 1/3R

Our Range of Products

Switchgear

Switchgear

  • In-house manufacturing for faster build delivery
  • UL 891, EUSERC & Siemens Approved OEM certified
  • 400A–4000A range, 7 multi-voltage configurations
480V Service Entrance Switchgear NEMA 1/3R

480V Service Entrance Switchgear NEMA 1/3R

  • 480V service entrance, UL 891 certified build
  • EUSERC Approved for utility specification compliance
  • NEMA 1/3R enclosure, seismic zone compliant
2500 Amp SES NEMA 1/3R

2500 Amp SES NEMA 1/3R

  • 2500A capacity, scales up to 4000A
  • NEMA 1 & 3R indoor/outdoor enclosures
  • UL Listed & EUSERC Approved assembly
800 Amp Switchboard NEMA 1/3R

800 Amp Switchboard NEMA 1/3R

  • NEMA 1/3R enclosures for indoor or outdoor use
  • UL Listed & EUSERC Approved switchboard
  • Heavy-duty build rated 300 lb for long service
1000 Amp Switchboard NEMA 1/3R

1000 Amp Switchboard NEMA 1/3R

  • 1000A main breaker configuration switchboard
  • UL 891 & EUSERC Approved, seismic compliant
  • 7 multi-voltage options, NEMA 1/3R enclosure
Service Entrance Switchgear NEMA 1/3R

Service Entrance Switchgear NEMA 1/3R

  • Scalable from 400A up to 4000A configurations
  • UL 891, EUSERC & seismic zone compliant
  • NEMA 1/3R with genuine Siemens components

Showing 1 to 6 of 35 results

Frequently Asked Questions

What gauge wire for 800 amp?

For an 800-amp service, the NEC typically requires a minimum of 1000 kcmil copper conductors or 1250 kcmil aluminum conductors per phase, though parallel sets of smaller conductors (e.g., 2 sets of 500 kcmil copper) are commonly used. Always verify with a licensed electrician and your local utility specifications, as ampacity tables and derating factors can affect the final conductor selection.

What is an 800 amp main distribution panel used for?

What is the difference between a switchboard, switchgear, and panelboard at 800 amps?

Are DEI Power's 800 amp panels UL listed?

What voltage configurations are available for 800 amp panels?

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

Does DEI Power offer dedicated project support for 800 amp panel orders?

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

800A panels provide dependable service entrance power distribution for office buildings, retail centers, and multi-tenant campuses.

Industrial & Manufacturing Facilities

Industrial & Manufacturing Facilities

Heavy-duty switchboards and switchgear manage high-amperage loads and protect critical equipment in manufacturing operations.

Utility & Infrastructure Projects

Utility & Infrastructure Projects

EUSERC-approved service entrance switchgear meets strict utility specifications for substations and infrastructure distribution systems.

Data Centers & Colocation Facilities

Data Centers & Colocation Facilities

800A switchgear supports continuous uptime and large electrical load control in hyperscale and enterprise data center 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 & Facility Teams Choose DEI Power

Siemens Approved OEM Manufacturing

As an approved Siemens OEM, every panel is built with genuine Siemens components, ensuring precision-engineered performance, code compliance, and long-term reliability on every project.

In-House Builds & Fastest Lead Times

With a 50,000 sq. ft. facility in Ontario, CA, DEI Power manufactures switchgear in-house for faster builds, fewer delays, and free shipping delivered in 3–5 business days.

UL 891 Certified & Seismically Compliant

All assemblies carry UL 891 certification and meet UBC, CBC, and IBC seismic zone requirements, reducing change orders and keeping mission-critical projects on schedule.

Get a Quote for Your 800A Distribution Project

Submit your project specs and a DEI Power specialist will respond with configuration guidance, compliance details, and pricing — typically 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.