Model SD55 Generator Interlock Kit fits Square D Panels having a bottom-mounted, centered, single handle, vertical-throw main breaker spaced approx. 5 1/2" below the branch breaker columns and approx. 2" horizontal spacing between branch breaker columns.
 
The generator breaker will mount on the bottom of the right branch breaker column. The interlock may be disassembled to install if necessary due to the two overlapping panel covers.
 
This kit is not yet a full production run kit, so it is not our signature blue anodized color. It is precision CNC machined from solid aluminum billet however, and looks very professional and fits very well. The kit includes everything necessary to complete the installation including all hardware, the correct size drill bit, name brand thread lock compound, a full warning placard set, and clear installation instructions.
 
All of our interlock kits are proudly made in the USA!