1200 Amp SES NEMA 1/3R
- 1200A SES with main breaker configuration
- UL Listed, UL 891 & EUSERC certified
- Seismic compliant: UBC, CBC & IBC zones
UL 891 Certified
EUSERC Approved
Siemens Approved OEM
DEI Power's 800 Amp Disconnect Switches category features UL 891-certified switchgear, switchboards, and service entrance equipment rated at 800A. Built with genuine Siemens components, these units serve commercial buildings, industrial facilities, data centers, and utility infrastructure, offering NEMA 1 and 3R enclosure options across multiple voltage configurations.
Talk to our product experts for custom solutions.
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For an 800 amp disconnect, you typically need 1000 kcmil copper conductors or 1250 kcmil aluminum conductors per phase, though exact sizing depends on conductor material, insulation type, installation method, ambient temperature, and local NEC requirements. Always consult a licensed electrician and your local utility for final specification approval.
Talk to our experts for custom solutions and tailored guidance.
800 amp switchgear and switchboards provide safe, reliable power distribution for large commercial building electrical systems.
Heavy-duty 800A disconnect switches control and protect large electrical loads in manufacturing and processing facilities.
UL 891 certified 800 amp switchgear ensures uninterrupted power delivery for mission-critical data center operations.
EUSERC-approved service entrance switchgear meets strict utility specifications for infrastructure and substation applications.
Talk to our experts for custom solutions and tailored guidance.
As an approved Siemens OEM, DEI Power builds every switchgear unit with genuine Siemens components, ensuring code-compliant, precision-engineered performance you can depend on.
With in-house manufacturing at our 50,000 sq. ft. Ontario, CA facility, we deliver switchgear faster than competitors — reducing schedule risk on time-critical projects.
All switchgear and switchboards are UL 891 certified and meet UBC, CBC, and IBC requirements for all seismic zones, keeping your installations fully code-compliant.
Submit your project details and a DEI Power specialist will respond with a custom configuration and competitive quote 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.
