Crown Technical Systems
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Specializing in relay and control panels, medium-voltage switchgear, and custom enclosures—setting the standard for reliable energy infrastructure. Crown Technical Systems, a Flex company, was founded in 1996 as a Relay Panel supplier to the Federal Government, and now serves as a manufacturing center for Relay Panels, Steel Enclosures, OEM Medium Voltage Switchgear located in Fontana, California.
03/03/2026
Another sunny day in Fontana — another MV E‑House built and ready to ship!
Proud of our team for keeping the momentum strong and delivering reliable power solutions day after day. Arc‑resistant switchgear continues to be one of our core offerings — on to the next one!
02/17/2026
Efficiently distribute power across your grid with Crown’s fully integrated power distribution centers. Our plug‑and‑play solutions are built to your specifications, ensuring seamless delivery and installation. Have an upcoming project? Connect with our sales team today!
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01/27/2026
Our team designs modular utility enclosures that transport easily and assemble into one unified structure on‑site. If a project requires a split building, we can ship single sections up to 59’6” x 15’6”. Whatever the scale, Crown has your back every step of the way.
11/19/2025
At Crown Technical Systems, our relay panels are engineered to protect, monitor, and control medium‑voltage systems with precision. From fault detection to seamless SCADA integration, we deliver dependable solutions that utilities and data centers can trust.
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Telephone
Address
13470 Philadelphia Avenue
Fontana, CA
92337
Opening Hours
| Monday | 7am - 4pm |
| Tuesday | 7am - 4pm |
| Wednesday | 7am - 4pm |
| Thursday | 7am - 4pm |
| Friday | 7am - 4pm |
