Switchgear
- 400A to 4000A scalable power capacity
- UL 891 & Siemens Approved OEM certified
- NEMA 1/3R for indoor & outdoor installs
UL 891 Certified
Siemens Approved OEM
EUSERC Approved
DEI Power's front-connected switchboards deliver UL 891-certified, code-compliant power distribution for commercial, industrial, and utility applications. Built with genuine Siemens components and available in NEMA 1 or NEMA 3R enclosures, these switchboards support amperage ranges from 400A to 4000A across multiple voltage configurations.
To reset a tripped Siemens breaker, first identify the tripped breaker — it will be in the middle or OFF position. Turn it fully to OFF, then firmly switch it back to ON. If it trips again immediately, do not reset it again; contact a licensed electrician to investigate the underlying fault before re-energizing the circuit.
Talk to our experts for custom solutions and tailored guidance.
Reliable switchboard solutions for office campuses, retail centers, and mixed-use developments requiring safe, high-capacity power distribution.
Heavy-duty switchboards built for demanding industrial environments, supporting large electrical loads and continuous production operations.
High-amperage switchgear supporting uptime-critical data center and colocation facilities with scalable power distribution infrastructure.
EUSERC-approved switchboards designed for utility substations and infrastructure projects requiring strict compliance and long-term reliability.
Talk to our experts for custom solutions and tailored guidance.
Every switchboard is built with genuine Siemens components under Siemens Approved OEM authorization, ensuring precision-engineered, code-compliant performance.
In-house manufacturing at our 50,000 sq. ft. Ontario, CA facility enables faster builds, fewer delays, and free shipping in 3–5 business days.
Over a decade engineering UL 891-certified switchboards for commercial, industrial, and utility projects, with in-house design support and post-installation service.
Submit your specs and a DEI Power expert will respond with configuration guidance, pricing, 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.
