400 Amp Service Entrance Switchgear NEMA 1/3R
- 400A service entrance, multi-voltage
- NEMA 1 & 3R indoor/outdoor enclosures
- UL Listed & seismic zone compliant
UL 891 Certified
EUSERC Approved
Siemens Approved OEM
Branch Circuit Panels from DEI Power include UL 891-certified panelboards and Remote Power Panels (RPPs) built with genuine Siemens components. Ranging from 225A to 4000A across multiple voltage configurations, these panels serve commercial, industrial, data center, healthcare, and utility applications requiring reliable, code-compliant branch circuit power distribution.
Talk to our product experts for custom solutions.
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A branch circuit panelboard is an electrical distribution assembly that receives power from a main source and distributes it through individual circuit breakers to multiple branch circuits. It controls, protects, and distributes power to lighting, equipment, and other loads within a building or facility. DEI Power's panelboards are UL 891 certified and built with genuine Siemens components for dependable performance.
Talk to our experts for custom solutions and tailored guidance.
RPPs and panelboards distribute branch circuit power to server racks, GPU clusters, and colocation rows in hyperscale and edge data centers.
Branch circuit panelboards provide organized, code-compliant power distribution for lighting, HVAC, and equipment loads in commercial facilities.
Heavy-duty panelboards from 400A to 4000A protect and distribute power to large machinery, process equipment, and critical industrial loads.
Panelboards and RPPs provide reliable, structured branch circuit distribution for imaging equipment, life-safety systems, and critical healthcare loads.
Talk to our experts for custom solutions and tailored guidance.
In-stock panelboards and RPPs ship within 1 business day from our 50,000 sq. ft. Ontario, CA facility, supporting emergency replacements and deadline-driven deployments.
Every branch circuit panel is built with authentic Siemens components and certified to UL 891, ensuring code compliance, system compatibility, and long-term field reliability.
DEI Power designs and assembles all panels domestically in Ontario, California, meeting Build America Buy America requirements and utility-approved specifications for public projects.
Submit your requirements and an RPP or panelboard specialist will respond same business day with pricing, lead times, and submittal documentation.
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.
