
480V Meter Main NEMA 1/3R
- 480V rated for large industrial applications
- UL 891 Certified & EUSERC Approved build
- NEMA 1 indoor & NEMA 3R outdoor options
UL 891 Certified
EUSERC Approved
Approved Siemens OEM
DEI Power's 400 Amp Meter Main Panel category offers UL 891-certified, EUSERC-approved combo meter solutions built with genuine Siemens components. Available in NEMA 1 and NEMA 3R enclosures across multiple voltage configurations, these units serve commercial, industrial, and utility applications with heavy-duty construction and service-friendly layouts.









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A 400 Amp meter main panel, also called a combo meter main, is a single enclosure that integrates the utility meter socket and the main circuit breaker disconnect. It simplifies service entrance installations by combining two functions into one UL-listed assembly, reducing installation time and ensuring code compliance for commercial and industrial projects.
Talk to our experts for custom solutions and tailored guidance.

Meter main panels provide reliable service entrance solutions for office buildings, retail centers, and mixed-use developments.

Heavy-duty meter mains support high-demand power distribution in factories, processing plants, and production facilities.

EUSERC-approved meter mains meet utility specifications for substations, grid infrastructure, and multi-tenant service points.

UL 891-certified meter mains deliver safe, code-compliant power control for data centers and mission-critical environments.
Talk to our experts for custom solutions and tailored guidance.
Every meter main is built with genuine Siemens components as an approved OEM, ensuring precision-engineered performance and full code compliance on every project.
In-house manufacturing at our 50,000 sq. ft. Ontario, CA facility means faster builds, fewer delays, and free shipping delivered in 3–5 business days nationwide.
All units carry UL 891 certification, EUSERC approval, and meet UBC, CBC, and IBC seismic zone requirements, reducing risk and eliminating costly field adjustments.
Submit your project details and a DEI Power specialist will respond with pricing, configuration guidance, and lead time 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.