Welcome to 3J Maintenance
Industrial Automation Control in Rancho Cucamonga and Ontario

Full Service Electrical Contractor
With 30 years of experience as an electrical contractor, 3J Maintenance Industrial Control & Electrical boasts professional electricians that are more than capable of providing homeowners and commercial properties in Fontana, Ontario, and the entire Inland Empire a wide range of Industrial, Commercial & Residential services including:
- All Electrical Upgrades, Repairs & Maintenance
- Building Automation & Control
- Home Automation & Control
- Electrical Code Inspections
- Industrial Control & Electrical Service Specialist
Industrial Control & Electrical Service Specialist
3J Maintenance is known for excellence in building automation, specifically our unique capabilities in industrial control and industrial electrical work in Fontana, Rancho Cucamonga, Ontario, and other neighboring cities. Our electricians are attentive, efficient and fast in completing mechanical electrical tasks for industrial facilities throughout the U.S.
No matter what problem you’re facing in aspects of electrical conduit, wiring or automation control for your home, office or industrial plant, our electricians can provide you with the best solution. Armed with modern equipment and with the right people to deliver the job, we guarantee you that our work will exceed your expectations.
For electrical service calls and installation estimates:
Call 909-641-6495 or contact 3J Maintenance online.
3J Maintenance Industrial Control & Electrical | Fontana, California 92334
Offering building automation and electrical services to the Inland Empire, Fontana, Upland, Rancho Cucamonga, Norco, Rialto, San Bernardino, Highland, Redlands, Ontario, Corona, & Riverside, CA.
Electrical Contractor Serving:
- Inland Empire Locations
- Fontana
- Upland
- Rancho Cucamonga
- Riverside
- San Bernardino
- Highland
- Redlands
- Norco
- Rialto
- Ontario
- Corona
- More locations in and around Inland Empire, California
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