The invention discloses a protector which comprises a cover seat. A circuit breaker and a motor are arranged on the cover seat. An operating handle of the circuit breaker is movably connected with a connecting rod. The connecting rod is glidingly connected with the cover seat in a straight line way. The motor drives a connecting plate to rotate. The far end of the connecting plate, away from the rotating center, is provided with a pushing element. The connecting rod is provided with an upper baffle plate and a lower baffle plate which are blocked on the rotating track of the pushing element. The upper baffle plate and the lower baffle plate are respectively positioned on the left and right sides of the rotating center of the connecting plate, and so the pushing element can push the upper baffle plate to move upwards and push the lower baffle plate to move downwards. The left and right gap between the upper baffle plate and the lower plate is greater than the pushing element, so when the pushing element stays between the upper baffle plate and the lower baffle plate on the left and right sides, the upper baffle plate and the lower baffle plate can freely move up and down. During manual operation, the operator can not drive the motor to rotate, thereby ensuring the safety and the service life. The invention has the advantages of simple and reasonable structure, reliable use, convenient operation and the like.