Building electrical box shell construction finished product protective cover

A building electrical box shell construction finished product protective cover comprises a protective cover body, and the protective cover body is fastened to the surface of an electrical box and is attracted and fixed to the electrical box through a strong magnet. Handle holes are formed in the end face of the protective cover body, and the two ends of the handle are arranged in the handle holes and are installed and fixed through quick clamping mechanisms; the quick clamping mechanism comprises an adjusting rod, the upper end of the adjusting rod is connected with the limiting plate, and the lower portion of the adjusting rod penetrates through a through hole in the handle and then is connected with a pin. The pin penetrates through the handle hole when being in the same direction with the handle hole; the handle is limited when the pin and the handle hole form an included angle. The building electrical box shell construction finished product protective cover provided by the utility model is simple to manuf