Generator Interlock Kit for Square D QO or Homeline Panels, Compatible with 150 & 200 Amp, 1-3/8" Main Breaker Spacing, Professional Grade Circuit Breaker Lockout Device

With extreme weather and an aging power grid becoming more common, power outages are a growing concern. This Generator Interlock Kit offers a cost-effective and highly safe solution to connect your portable generator to your home’s electrical panel. It allows you to power essential circuits—refrigerators, lights, pumps, and furnaces—keeping your family comfortable and safe during an outage.

• Engineered specifically for Square D QO and Homeline 150-200 Amp main breaker load centers. Designed for a 1-3/8 inch spacing between the main and generator breaker. Ensures a perfect, non-invasive fit without modifying your existing panel.
• Utilizes a mechanical interlock principle that physically prevents the main breaker and the generator breaker from being in the "ON" position simultaneously. This eliminates the risk of backfeeding the utility grid, protecting line workers from electrocution and preventing damage to your generator when power is restored.
• Unlike limited transfer switches, this interlock kit allows you to power any circuit in your panel during an outage. You simply manage your load, giving you the flexibility to choose which circuits (lights, fridge, well pump, furnace) receive backup power.
• Constructed from high-strength steel or aluminum alloy for smooth sliding action and long-lasting durability. The kit includes everything needed for installation: Interlock plate, shoulder screws, hex nuts, drill template, generator start-up label, cable ties, drill bit, and detailed instructions.
• Comes with a 3/16" Cobalt drill bit for precise drilling. Includes a drill template for accurate hole placement on the panel cover. Saves hundreds of dollars compared to purchasing and installing an Automatic Transfer Switch (ATS). (Professional installation by a licensed electrician is highly recommended).