Flngr SD200A Generator Interlock Kit for Square D QO/Homeline 150–200A

Meet the Flngr SD200A Generator Interlock Kit, engineered to safely coordinate power between your utility supply and a backup generator on Square D QO or Homeline panels rated for 150A or 200A. This practical module is designed to fit in tight spaces with a precise spacing requirement, helping you manage two power sources without back-fed energy. The result is a composed, safer setup you can rely on during routine outages or planned generator use.

Compatibility and spacing

Specifically built for Square D QO and Homeline panels at 150A and 200A. It requires a 1 3/8 inch gap between the main and generator breakers to install securely and function as intended.

• Compatible with QO and Homeline 150A/200A panels
• Precise 1 3/8 inch spacing for proper clearance
• Designed to help prevent simultaneous energization from two sources

What’s in the kit

• 1 × Interlock plate
• 3 × Screws kit
• 1 × Drill Bit
• 1 × Instruction Bulletin
• 1 × Generator Start-Up Procedure Label
• 5 × Remind Label
• 1 × Zip Ties

Safety and use cases

In the moment of power change, this interlock kit helps you direct generator power to a designated portion of the electrical system while keeping essential appliances accessible. It’s designed to work as part of a responsible backup power plan for homes or small spaces without implying guaranteed results. Real-world use shows potential for smoother transitions in outages and a clear method to prioritize critical circuits.

Quality promise and support

Flngr backs its interlock kits with a quality commitment. If the product ever falls short of expectations, contact us by email and we’ll promptly send a new original replacement at no additional cost.