Motor overheating protection device

The invention relates to a motor overheating protection device and belongs to the technical field of motor overheating protection. The technical problem to be solved is that the motor overheating protection device can cool a motor first before the power of the motor is cut off to prolong the working time of the motor. The technical scheme is that the motor overheating device comprises a temperature relay, a control device, a first time relay, a first electromagnetic valve, a first cold air conveying device, a power cut-off device and a motor control circuit, the temperature relay is electrically connected with the control device, the control device is respectively and electrically connected with the first time relay and the first electromagnetic valve, the first electromagnetic valve is electrically connected with the first cold air conveying device, the first time relay is electrically connected with the power cut-off device and the power cut-off device is electrically connected with the motor control circuit. The motor overheating protection device is suitable for power departments.