
Switchgear
- In-house manufacturing for faster build delivery
- UL 891, EUSERC & Siemens Approved OEM certified
- 400A–4000A range, 7 multi-voltage configurations
UL 891 Certified
EUSERC Approved
Siemens Approved OEM
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.



































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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.
Talk to our experts for custom solutions and tailored guidance.

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

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

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

800A switchgear supports continuous uptime and large electrical load control in hyperscale and enterprise data center environments.
Talk to our experts for custom solutions and tailored guidance.
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.
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.
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.
Submit your project specs and a DEI Power specialist will respond with configuration guidance, compliance details, and pricing — typically within one business day.
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.
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.