
240V Switchgear NEMA 1/3R
- 240V / 240/120V voltage configuration
- NEMA 1 indoor & NEMA 3R outdoor rated
- UL Listed & EUSERC Approved assembly
UL 891 Certified
Siemens Approved OEM
EUSERC Approved
DEI Power's distribution panelboards deliver reliable, code-compliant power distribution for commercial, industrial, and utility applications. Built with genuine Siemens components, available in NEMA 1 and NEMA 3R enclosures, and UL 891 certified, these panelboards support amperage ranges from 400A to 4000A across multiple voltage configurations.





























































































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A distribution panelboard is an electrical enclosure that receives power from a utility or main service entrance and distributes it to multiple branch circuits throughout a facility. It houses circuit breakers or fuses that provide overcurrent protection for each circuit, enabling safe and organized power distribution in commercial, industrial, and utility settings.
Talk to our experts for custom solutions and tailored guidance.

Panelboards distribute power safely across lighting, HVAC, and tenant loads in high-demand commercial facilities.

Heavy-duty panelboards manage large electrical loads and protect critical machinery in industrial and manufacturing plants.

EUSERC-approved panelboards meet utility specifications for service entrance and infrastructure power distribution projects.

UL 891 certified panelboards and remote power panels provide structured, reliable branch circuit distribution for critical data center loads.
Talk to our experts for custom solutions and tailored guidance.
Every panelboard is built with genuine Siemens components as an approved OEM, ensuring code-compliant assemblies that pass inspections and perform reliably in the field.
Manufactured and stocked in our 50,000 sq. ft. Ontario, CA facility, most orders ship within 1 business day — keeping your project timelines on track.
From 400A to 4000A across multiple voltage options and NEMA ratings, we configure every panelboard to meet your exact project, utility, and jobsite requirements.
Submit your project details and a DEI Power specialist will respond with a custom quote, configuration guidance, and lead time confirmation.
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.