The installation dimensions of the IE1-IE4 high temperature series three-phase asynchronous motors comply with the IEC 60034 standard. These motors are developed and designed specifically for high temperature environments, and can meet the different temperature requirements of users. They can operate normally for a prolonged period in environments with a maximum temperature of 100℃ and for two hours in environments with temperatures of 250℃, 300℃, and 400℃, meeting the requirements of national fire protection motors. They are widely used in ventilation equipment.