UL 891 Certified certified

UL 891 Certified

EUSERC Approved certified

EUSERC Approved

Siemens Approved OEM certified

Siemens Approved OEM

600 Amp Switchgear — Metal Enclosed 480Y/277V 3-Phase

DEI Power's 600 Amp Metal Enclosed Switchgear operates at 480Y/277V 3-Phase and includes switchboards, service entrance switchgear, SES sections, and meter mains. UL 891 certified and built with genuine Siemens components, these assemblies deliver reliable power distribution for commercial, industrial, and utility applications across the USA.

Switchgear
Service Entrance Switchgear NEMA 1/3R
Switchboard NEMA 1/3R
SES (Service Entrance Section)
Meter Main NEMA 1/3R

Our Range of Products

Switchgear

Switchgear

  • Siemens Approved OEM manufacturing
  • In-house build for faster delivery times
  • Seismic-rated: UBC, CBC & IBC compliant
Service Entrance Switchgear NEMA 1/3R

Service Entrance Switchgear NEMA 1/3R

  • EUSERC approved for utility compliance
  • Built-to-spec per utility requirements
  • NEMA 1 & 3R enclosures, 400A–4000A
Switchboard NEMA 1/3R

Switchboard NEMA 1/3R

  • NEMA 1 & 3R indoor/outdoor enclosures
  • UL 891 certified with Siemens OEM parts
  • 400A–4000A amperage range available
SES (Service Entrance Section)

SES (Service Entrance Section)

  • UL 891 certified Siemens OEM components
  • NEMA 1 & 3R flexible enclosure options
  • Seismic-compliant all-zone construction
Meter Main NEMA 1/3R

Meter Main NEMA 1/3R

  • EUSERC approved, utility-spec compliant
  • UL 891 certified with Siemens components
  • NEMA 1 & 3R, supports 400A–4000A loads

Frequently Asked Questions

What size wire for a 600 amp breaker?

For a 600 amp breaker in a 480Y/277V 3-phase system, wire sizing must comply with NEC requirements and is typically handled using multiple parallel conductors — commonly 3/0 AWG to 350 kcmil copper or aluminum conductors run in parallel sets, depending on conductor material, insulation rating, conduit fill, and ambient temperature. Because wire sizing for 600A applications is highly application-specific, DEI Power recommends consulting your project's electrical engineer or contacting DEI Power's in-house engineering team for configuration guidance tailored to your installation.

What certifications should 600 amp switchgear have?

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

What product types are included in DEI Power's 600 amp switchgear lineup?

What does EUSERC approval mean for service entrance switchgear?

What industries is DEI Power's 600 amp switchgear designed to serve?

What are DEI Power's lead times and shipping options for 600 amp switchgear?

How does DEI Power's Siemens Approved OEM authorization benefit buyers of 600 amp switchgear?

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

Provides reliable 480Y/277V power distribution for lighting, HVAC, and large electrical loads across office buildings and campuses.

Industrial & Manufacturing

Industrial & Manufacturing

Controls and protects high-demand electrical loads including motors, process equipment, and production machinery in industrial plants.

Data Centers & Colocation

Data Centers & Colocation

Delivers precise, uninterrupted 480Y/277V 3-phase power distribution critical for server infrastructure and uptime in data centers.

Utility & Infrastructure

Utility & Infrastructure

EUSERC-approved switchgear built to utility specifications for safe service entrance power control in infrastructure projects.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

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Why Contractors, Engineers & Facility Teams Choose DEI Power

In-House Manufacturing, Faster Delivery

Our 50,000 sq. ft. Ontario, CA facility enables in-house builds, reducing lead times and delivering free nationwide shipping in 3–5 business days.

Siemens OEM & UL 891 Certified

Every unit is built with genuine Siemens components under approved OEM authorization, fully UL 891 certified and EUSERC approved for code compliance.

Dedicated Engineering & Project Support

From custom specifications to post-installation guidance, our in-house electrical engineering team supports your project at every critical stage.

Get a Quote on 600A Switchgear — Built to Your Specs

Submit your project details and a DEI Power specialist will respond with accurate configuration guidance, pricing, 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.