Welcome To Interlockkit - An alternative power solution that is easy to install in your home or business
We create high-quality-stainless-steel, mechanical Interlocking devices to work for any electrical panel. Our product's goal is to help prevent dangerous back-feeding scenarios from being possible while using a generator or solar battery as a secondary or third power supply, during a main grid power outage. The Interlock Kit is trusted by more than 2.5 million home and businesses across the U.S. and Canada. All products are NEC Code Compliant.
Engineered for Safety. Proven When It Matters Most.
- Safe & Code-Compliant – Meets NEC 702.4 standards for standby power and certified for use with UL 67 panelboards.
- Fast Installation – Mounts directly to your existing breaker panel in under an hour with a qualified electrician.
- Built to Last – Made in the USA from 100% stainless steel and precision laser-cut for durability and accuracy.
- Trusted & Tested – Certified by Eurofins-MET Laboratories, America’s leading independent electrical testing lab.
- Space-Saving Design – No extra wall space required; integrates seamlessly with your existing setup.
WHAT WE OFFER
We manufacture Interlock kits for all commercial and residential panels.
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INTERLOCK KIT SELECTION
Check out all the manufacturers our kits will work with in the shop!
What our customers say
As electrical contractors we've been using Interlock for many years now and they've been top notch from the beginning. Their wide selections, easy to navigate and identify which kit is needed, to fast shipping and pricing! We highly recommend and will continue to use them for all of our interlock kit projects.
This was a VASTLY easier installation than using a transfer switch box. There are similar products on eBay/Amazon that are a little less expensive but this kit is high quality, stainless steel, and MOST IMPORTANTLY they will help you figure out which kit fits your panel (or even put together a custom kit as my oddball panel required). Super helpful, figured it out on the phone, had the kit 2 days later.
I have been using this product for years especially on Legacy service panels. You practically can find any configuration. If they don't have the configuration you are looking for, you can reach them and they will do their best to accommodate. Fair pricing and accurate installation instructions!
Electrical Contractor here - who has been in business since 2001 and has used this Interlock KIt system many times over the years. This is such a great alternative to customers looking for the price effective safe option compared to an Automatic back up system.
After hurricane Beryl with three days of no power, we decided to purchase a generator. We researched and found out we needed an interlock and could not find anything that would work on our box. I called Interlockkit and they had exactly what I needed. And it was made in the USA. I r received it within seven days, followed the instructions and within less than 30 minutes my breaker box was ready. Within a few days I had a gas line and electricity ready for the next hurricane. Thank you for being an outstanding and serviceable company.