
Service Entrance Switchgear NEMA 1/3R
- 400A–4000A amperage range available
- Seven voltage options up to 480Y/277V
- UL 891, EUSERC & seismic compliant
UL 891 Certified
EUSERC Approved
Siemens Approved OEM
DEI Power's 1600 Amp Fused Disconnect Switches — 600V 3-Phase lineup includes UL 891-certified switchgear, switchboards, service entrance sections, and meter mains built with genuine Siemens components. Designed for commercial, industrial, and utility applications, these heavy-duty assemblies are available in NEMA 1 and NEMA 3R enclosures and meet full seismic compliance requirements.






























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DEI Power's 1600A fused disconnect switch assemblies are available in multiple voltage configurations including 120/240V, 208Y/120V, 240V, 240/120V, 480V, 480Y/277V, and 415/240V. This multi-voltage availability ensures compatibility with a wide range of commercial, industrial, and utility 3-phase power distribution systems.
Talk to our experts for custom solutions and tailored guidance.

Heavy-duty 1600A switchgear and SES units power large commercial buildings, campuses, and retail environments.

1600A disconnect switches provide reliable load control and protection in factories and processing facilities.

EUSERC-approved assemblies support utility substations, metering points, and critical infrastructure power systems.

Dependable 1600A switchgear supports continuous uptime for enterprise data centers and colocation facilities.
Talk to our experts for custom solutions and tailored guidance.
As an approved Siemens OEM, DEI Power assembles switchgear using genuine Siemens components, ensuring code-compliant, precision-engineered performance on every project.
With a 50,000 sq. ft. facility in Ontario, CA, DEI Power manufactures in-house for faster lead times, free shipping, and reliable 3–5 business day delivery nationwide.
Every assembly is UL 891 certified, EUSERC approved, and seismic-zone compliant. Dedicated technical and project support minimizes change orders and field adjustments.
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.