Switchgear Supply
Specification-driven switchgear supply with documentation, enclosure guidance, and fulfillment support to reduce change orders, field adjustments, and schedule risk on critical power projects.
DEI Power manufactures and fabricates code-compliant switchboard cabinets built for demanding commercial, industrial, and utility applications. From custom configurations to rapid fulfillment, our team helps contractors, engineers, and facility teams reduce delays, simplify approvals, and keep critical power projects moving with dependable U.S.-assembled solutions backed by engineering support.

Custom-built power distribution equipment, engineering support, and fast-turn supply solutions for critical electrical infrastructure projects.
Specification-driven switchgear supply with documentation, enclosure guidance, and fulfillment support to reduce change orders, field adjustments, and schedule risk on critical power projects.
In-house engineering support for layouts, ratings, integration, and production-ready drawings that help ensure code compliance, installation efficiency, and long-term system performance.
Heavy-duty service entrance switchgear from 400A to 4000A, built with Siemens components and UL-listed assemblies for dependable commercial and industrial power distribution.
Flexible low-voltage switchgear lineups engineered for safe distribution, scalable integration, and easier maintenance across commercial, industrial, and infrastructure applications.
High-amperage switchgear solutions designed for larger load demands, coordinated protection, and reliable operation in data centers, campuses, and industrial facilities.
RPP solutions for high-density branch circuit distribution with scalable expansion, integrated monitoring, and service-friendly access for critical infrastructure environments.
DEI Power fabricates switchboard cabinets and related power distribution equipment to match project-specific layouts, ratings, and compliance requirements. With in-house engineering, UL 891-certified manufacturing, and Siemens OEM capabilities, each solution is designed to streamline submittals, support efficient installation, and deliver dependable long-term performance for commercial, industrial, utility, and mission-critical facilities.

Supporting critical power projects with compliant equipment, faster fulfillment, and dependable engineering coordination.
DEI Power combines manufacturing control, technical expertise, and responsive support for demanding power distribution projects.
UL 891-certified switchgear and Siemens OEM approval support safe, code-compliant fabrication for critical applications.
In-house manufacturing and stocked inventory help reduce delays and keep time-sensitive projects moving.
Configuration guidance, drawings, and specification review help minimize change orders and installation issues.
Domestic assembly supports sourcing requirements, quality control, and dependable long-term project execution.
Experienced specialists behind every fabricated power solution.
DEI Power has spent more than a decade building reliable switchgear and switchboard cabinet solutions for commercial, industrial, and utility applications. Operating from a 50,000 sq. ft. facility in Ontario, California, the company combines manufacturing, assembly, and engineering support under one roof to improve quality control and shorten lead times. Over the years, DEI Power has expanded from switchgear manufacturing into a broader power distribution solutions provider, helping contractors, engineers, and facility teams navigate specifications, compliance, and delivery demands with greater confidence. Backed by UL 891-certified manufacturing standards and approved Siemens OEM status, the team focuses on precision, responsiveness, and dependable execution for projects where uptime, safety, and schedule certainty matter.
A switchboard cabinet manufacturer designs, fabricates, assembles, and documents electrical distribution equipment used to control and distribute power safely. This typically includes enclosure selection, bus and breaker integration, layout coordination, compliance review, and production-ready submittals. DEI Power also supports specification guidance, engineering coordination, and fulfillment for commercial, industrial, utility, and mission-critical applications.
Talk with our team about specs, lead times, and fabrication options.
DEI Power supports switchboard cabinet fabrication and delivery for customers across the United States.
Nationwide
Service Area
24/7 Phone Availability
Support Access
Ontario, CA
Fulfillment Hub
Contact us to confirm specifications, shipping, and support availability.
Certified for compliant low-voltage switchgear manufacturing.
Approved OEM status for trusted component integration.
Domestic fabrication supporting sourcing compliance needs.
Share your project requirements, ratings, and timeline, and our team will help you identify the right fabricated solution.
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.