【COMPATIBLE MODELS】Safety Generator Interlock Kit Compatible with Square D QO or Homeline with a single horizontal throw 100 or 125 amp panels. Spacing between main and generator breakers is 3/4-7/8 inches. Mounts on front of breaker panel, no need extra control box or wiring.Please check the model number of the product and measure the distance between the main and branch circuit breakers before purchasin

【SOLVES THE PROBLEM】 When an unexpected power outage inconveniences you, the interlock kit prevents both utility and generator power, and is used to safely connect generator power to any circuit in your home while ensuring that you can safely use all of your household appliances.

 【PRODUCTS INCLUDE】Our Professional and Interlock Kit includes breaker interlock kit silver x1, shoulder screw x3, hex nut x3, zipper tie x2, generator startup program label x1, reminder label x5, installation guide x1,3/16'' drill bit x1.

  【HIGH QUALITY AND REUSABLE】The interlock switch is made of high quality aluminum alloy with oxidized surface, corrosion resistant and sturdy thickness for long term use. The exterior is chamfered and the smooth surface protects the user's hand.