High-capacity overvoltage monitoring protection device

The utility model discloses a high-capacity overvoltage monitoring protection device which comprises a shell, an overvoltage monitor, a fixing assembly and a damping assembly. A supporting plate is fixedly connected to the inner side wall of the bottom of the shell, and a set of cavities are symmetrically formed in the side wall of the shell. The overvoltage monitor is placed on the side wall of the top end of the supporting plate; the fixing assembly is arranged in the shell; the damping assembly is arranged at the bottom of the shell; the fixing assembly comprises a T-shaped rod, a clamping plate and a suction cup. The T-shaped rods penetrate through the side wall of the shell and are in sliding fit with the side wall of the shell. The clamping plate is fixedly connected to the side wall of the side, located in the shell, of the T-shaped rod. The group of suction cups are symmetrically and fixedly connected to the side walls of the clamping plates; the other end of the first spring is fixedly connected to t