1200 Amp SES NEMA 1/3R
- 1200A SES with multi-voltage configuration
- NEMA 1 or 3R enclosure options available
- UL Listed, UL 891 & EUSERC Approved
UL 891 Certified
EUSERC Approved
Siemens Approved OEM
NEMA 3R Enclosures from DEI Power offer weather-resistant, outdoor-rated power distribution equipment including meter mains, switchgear, switchboards, panelboards, and service entrance sections. Built with genuine Siemens components, UL listed, and EUSERC approved, these assemblies serve commercial, industrial, and utility applications with amperage ranges from 400A to 4000A.
Talk to our product experts for custom solutions.
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NEMA 3R stands for National Electrical Manufacturers Association Type 3R. It designates enclosures designed for outdoor use that provide protection against rain, sleet, and external ice formation. NEMA 3R enclosures are not dust-tight but are rated to protect internal electrical components from weather, making them suitable for exterior mounting in most outdoor environments.
Talk to our experts for custom solutions and tailored guidance.
NEMA 3R meter mains, panelboards, and switchboards support outdoor service entrances in commercial campuses.
Heavy-duty NEMA 3R switchgear and service entrance sections manage large electrical loads in industrial plants.
EUSERC-approved NEMA 3R service entrance switchgear and SES units meet stringent utility substation requirements.
NEMA 3R switchgear and panelboards provide reliable outdoor power distribution for data center campuses.
Talk to our experts for custom solutions and tailored guidance.
As a Siemens Approved OEM, every NEMA 3R enclosure is built with genuine Siemens components, ensuring precision engineering, code compliance, and long-term reliability.
All enclosures carry UL 891 certification and EUSERC approval, meeting strict utility standards and seismic zone requirements under UBC, CBC, and IBC codes.
In-house manufacturing at our 50,000 sq. ft. Ontario, CA facility delivers most orders within 1 business day with free shipping nationwide in 3–5 business days.
Submit your requirements 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.