
Switchgear
- UL 891 certified Siemens Approved OEM build
- 400A–4000A across multiple voltage options
- In-house manufacturing ensures faster delivery
UL 891 Certified
EUSERC Approved
Siemens Approved OEM
DEI Power's 1600 Amp 480V 3 Phase Main Breaker Panelboards deliver heavy-duty power distribution for commercial, industrial, and utility applications. UL 891 certified and built with genuine Siemens components, these panelboards offer NEMA 1 and 3R enclosure options, seismic compliance, and service-friendly layouts for demanding environments.












DEI Power panelboards are available in amperage ratings from 400A to 4000A, including 1600A configurations. Voltage options include 120/240V, 240V, 208Y/120V, 480V, 480Y/277V, and 415/240V, making them suitable for a wide range of single and three-phase commercial and industrial power distribution applications.
Talk to our experts for custom solutions and tailored guidance.

1600A 480V panelboards provide reliable main breaker power distribution for large commercial buildings and campuses.

Heavy-duty panelboards control and protect large electrical loads in manufacturing plants and processing facilities.

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

UL 891-certified switchgear and panelboards ensure uninterrupted power for mission-critical data center operations.
Talk to our experts for custom solutions and tailored guidance.
As an approved Siemens OEM, every panelboard is built with genuine Siemens components, ensuring code-compliant, precision-engineered power distribution you can trust on any jobsite.
In-house manufacturing at our 50,000 sq. ft. Ontario, CA facility enables faster builds, fewer delays, and free shipping with delivery in 3-5 business days nationwide.
Over a decade building UL 891-certified switchgear for commercial, industrial, and utility projects — backed by dedicated project support and in-house engineering guidance.
Submit your project specs and a DEI Power specialist will respond with pricing, 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.