About Us

Learn About Us


For over 40 years Underground Electric Supply has been a stocking distributor for medium and high voltage material used to build and maintain power generation, distribution, and transmission electrical projects, 480 volts thru 500kV. We stock heat shrink and cold shrink terminations and splices, liquid and dry type transformers, circuit breakers, fuses, load interrupter switches, Burndy lugs and connectors; 3M tape products, as well as cable guards. At Underground Electric Supply we understand what “now” means, and with our on-hand stock we offer 24 Hour Emergency services to provide the supplies you need to bring your facility back online.  Our goal is to always provide customers with a full range of products and solutions that keep their business running in top form, provide continuous uninterruptible power, and help them stay ahead of the competition. On time delivery, a passion for precision, world class technical support, and a can-do attitude is what our customers have come to expect from Underground Electric Supply. We strive for excellence and take pride in the services we offer. Call us day or night for all your electrical product needs. Proudly serving the world from our original 10,000 square foot warehouse in Southern California since 1967.


Type Of Products We Carry:
- Medium & High Voltage Termination Kits
- Medium & High Voltage Splice Kits
- Power Cable Accessories
- Cable Connectors
- Medium & High Voltage Fuses
- Oil Cutout Accessories
- Splicing Materials


Brands We Carry:
- 3M
- Tyco (TE Connectivity) / Raychem
- Burndy
- Elastimold
- and more!
As we are building out our new website, please reach out to us directly if you do not see what you are looking for here.  We will continue to add our inventory to our site over time.  
Do you have an emergency? We can ship overnight anywhere in the continental US on all orders placed before 8pm EST. 
Call us at (909) 628-4763.