Circuit protector

The invention discloses a circuit protector which comprises an overcurrent protection assembly, an overvoltage protection assembly and a substrate. One end of the overcurrent protection assembly is connected to a first bonding pad, one end of the overvoltage protection assembly is connected to a second bonding pad, the other end of the overcurrent protection assembly and the other end of the overvoltage protection assembly are connected to a third bonding pad, the first, second and third bonding pads are arranged in the surface of the substrate, the first and second bonding pads are electrically connected to left electrodes via a first conductive channel and electrically connected to first and second connecting points respectively, and the third bonding pad is electrically connected to a right electrode via a second conductive channel and electrically connected to a third connecting point; and the first, second and third connecting points are connected to an external load to be protected, so that the overcurr