GE THQLLX1 Generator Interlock Kit For Any Mod 6 150 - 225 Amp Main Breaker Load Centers PowerMark Gold&trade; Convert an existing load center into a generator panel For use with a 150 - 225 Amp PowerMark Gold main breaker load center Ensures the main breaker is in the off position before branch breaker is back-fed from the generator Includes stainless-steel interlock device, auxiliary main breaker retainer, assembly hardware,