1200 Amp SES NEMA 1/3R
- 1200A rated main breaker configuration
- UL 891 certified & EUSERC approved SES
- Seismic rated for all UBC, CBC, IBC zones
UL 891 Certified
Siemens Approved OEM
EUSERC Approved
DEI Power's 1000A Main Circuit Breaker Switchboards deliver UL 891-certified, heavy-duty power distribution for commercial, industrial, and utility applications. Built with genuine Siemens components, available in NEMA 1 and 3R enclosures, and engineered for demanding environments where continuous, reliable operation is essential.
Talk to our product experts for custom solutions.
Apply Filters
Showing 1 to 6 of 41 results
DEI Power's 1000A switchboards are UL 891 certified and EUSERC approved. They also meet UBC, CBC, and IBC seismic zone requirements for all seismic zones. As an approved Siemens OEM, every unit is assembled with genuine Siemens components, ensuring code compliance and dependable field performance across commercial, industrial, and utility applications.
Talk to our experts for custom solutions and tailored guidance.
Providing safe, code-compliant main power distribution for high-demand offices, retail centers, and multi-building campuses.
Supplying heavy-duty 1000A switchboards for reliable load control and protection in factories and processing facilities.
EUSERC-approved switchgear built to utility specifications for substations and critical infrastructure power entry points.
Delivering continuous, dependable 1000A power distribution for uptime-critical data center and colocation environments.
Talk to our experts for custom solutions and tailored guidance.
As an approved Siemens OEM, DEI Power builds every switchboard with genuine Siemens components, ensuring code-compliant performance and long-term reliability on every project.
In-house manufacturing at our 50,000 sq. ft. Ontario, CA facility means faster builds, fewer delays, and free shipping with delivery in 3–5 business days nationwide.
From configuration guidance and custom specs to post-installation support, our specialists reduce change orders, field adjustments, and schedule risk on every critical project.
Submit your project details and a DEI Power specialist 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.