Three-phase motor protector is produced by KLIXON ® proprietary technology of Sensata.It is a protection element with both precise control of temperature and current overload, which can protect three-phase motors from damage caused by overheating,(These conditions include: phase loss, locked rotor, plug power, stall or start failure, high power overload, high ambient temperature and no ventilation.) with precise tripping time, reliable performance and auto reset.