Insulation isolation warning protective cover suitable for electrical secondary terminal

The utility model discloses an insulation isolation warning protective cover suitable for an electrical secondary terminal. The insulation isolation warning protective cover comprises a top surface, side surfaces, jacks and gear teeth. The top surface, the side surfaces and the gear teeth are integrally formed; the top surface is provided with two rows of jacks along two sides of the central axis. The two sides of the top face extend downwards to form side faces, and the included angle between the top face and the side faces ranges from 95 degrees to 115 degrees. The side faces extend downwards to form gear teeth, and the included angle between the side faces and the gear teeth ranges from 125 degrees to 140 degrees. According to the utility model, a buckle type integrated model is adopted, so that an overhaul loop and an operation loop in the electrical secondary disc cabinet can be obviously distinguished, and a device test loop allowing quantity adding and an external loop forbidding quantity adding can be