400 Amp Service Entrance Switchgear NEMA 1/3R
- 400A service entrance, multi-voltage options
- UL listed & EUSERC approved assembly
- NEMA 1 indoor or 3R outdoor enclosures
UL 891 Certified
EUSERC Approved
Siemens Approved OEM
DEI Power's electrical switchgear category offers UL 891-certified switchboards, switchgear, service entrance switchgear, and SES units built with genuine Siemens components. Available in NEMA 1 and 3R enclosures, with amperage from 400A to 4000A and voltage options from 120V to 480V, these products serve commercial, industrial, and utility applications nationwide.
Talk to our product experts for custom solutions.
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Switchgear pricing varies based on amperage (400A–4000A), voltage configuration, enclosure type (NEMA 1 or 3R), and certifications required. DEI Power provides pricing available on request. Due to utility standards, service entrance switchgear must be built to approved specifications. Contact our team directly for an accurate, project-specific quote.
Talk to our experts for custom solutions and tailored guidance.
Switchgear and switchboards powering office buildings, retail centers, and multi-tenant campuses requiring reliable load management.
Heavy-duty switchgear for factories, processing plants, and manufacturing operations demanding continuous, high-capacity power distribution.
EUSERC-approved service entrance switchgear built to utility specifications for substations and infrastructure distribution projects.
High-capacity switchgear solutions for hyperscale and enterprise data centers requiring uninterrupted, code-compliant power protection.
Talk to our experts for custom solutions and tailored guidance.
Our 50,000 sq. ft. Ontario, CA facility enables in-house switchgear builds with faster lead times, free shipping, and 3–5 business day delivery nationwide.
Every unit is built with genuine Siemens components under Approved OEM authorization, ensuring UL 891 compliance and code-ready performance in the field.
From configuration guidance to post-installation support, our in-house specialists help you avoid change orders, reduce delays, and keep projects on schedule.
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.