1200 Amp SES NEMA 1/3R
- 1200A capacity for large-scale facilities
- NEMA 1 & 3R enclosure options available
- UL 891, EUSERC & all seismic zones approved
UL 891 Certified
Siemens Approved OEM
EUSERC Approved
400A Panelboards with Main Lug and Copper Bus configurations from DEI Power offer UL 891-certified, Siemens-component power distribution solutions for commercial, industrial, and utility applications. Available in NEMA 1 and NEMA 3R enclosures across multiple voltage configurations, these panelboards deliver reliable branch circuit protection and long-term serviceability.
Talk to our product experts for custom solutions.
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The cost of a 400A electrical service varies based on configuration, voltage rating, enclosure type (NEMA 1 or NEMA 3R), and utility specifications. DEI Power's 400A panelboards and service entrance equipment are priced on request. Contact a specialist at (866) 773-8050 to receive an accurate quote tailored to your project requirements and utility standards.
Talk to our experts for custom solutions and tailored guidance.
400A panelboards provide reliable branch circuit distribution for office buildings, retail centers, and mixed-use facilities.
Main lug panelboards support high-demand electrical loads in factories, processing plants, and production environments.
EUSERC-approved 400A panelboards meet utility specifications for service entrance and infrastructure power distribution.
UL 891-certified panelboards deliver structured branch circuit power for critical data center and healthcare facility loads.
Talk to our experts for custom solutions and tailored guidance.
Every 400A panelboard is built with genuine Siemens components as an authorized OEM, ensuring code-compliant performance and long-term reliability on every project.
All panelboards carry UL 891 certification and EUSERC approval, meeting seismic requirements under UBC, CBC, and IBC — keeping your project inspection-ready.
With 50,000 sq. ft. of inventory in Ontario, California, most orders ship within one business day — eliminating schedule risk on time-sensitive commercial and industrial projects.
Submit your project specs and a DEI Power specialist will respond with pricing, configuration guidance, and delivery details.
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.