480Y/277V Meter Main NEMA 1/3R
- 480Y/277V for high-voltage applications
- UL Listed & EUSERC seismic compliant
- Genuine Siemens components, 300 lb build
UL 891 Certified
EUSERC Approved
Approved Siemens OEM
400 Amp Meter Mains with QO CSED Ringless Socket configurations combine utility metering and main disconnect functions in a single enclosure. Built with genuine Siemens components, UL Listed and EUSERC Approved, these units serve commercial, industrial, and utility power distribution applications in NEMA 1 and NEMA 3R enclosures.
Talk to our product experts for custom solutions.
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A QO CSED (Customer-Sited Electrical Distribution) Ringless Socket meter main combines a utility-grade metering socket with a main circuit breaker in a single enclosure. The ringless design allows utility personnel to remove the meter without a locking ring, and the QO socket type is specific to Square D / Siemens-compatible metering configurations used widely by utilities across the U.S.
Talk to our experts for custom solutions and tailored guidance.
Meter mains provide combined utility metering and main disconnect for offices, retail centers, and mixed-use developments.
Heavy-duty meter main switchgear supports high-demand power distribution in factories, processing plants, and production facilities.
EUSERC-approved meter mains meet utility specifications for substations, grid-tied infrastructure, and service entrance applications.
Code-compliant, pre-configured meter mains reduce field adjustments and streamline inspection approval on commercial and industrial projects.
Talk to our experts for custom solutions and tailored guidance.
As an approved Siemens OEM, DEI Power delivers precision-engineered meter mains built with genuine Siemens components, ensuring code compliance and dependable field performance.
With in-house manufacturing at a 50,000 sq. ft. facility in Ontario, CA, DEI Power accelerates builds and ships most orders within 1–5 business days, minimizing project delays.
Every meter main is UL 891 certified and meets UBC, CBC, and IBC seismic requirements, providing the compliance documentation contractors and engineers need to close projects confidently.
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.
