OUT69 series overload(overheat)motor protection module matches with PTC sensor and available for all kinds of motor which needed overload(overheat)protection. When the temperature of the monitored areas exceeds the nominal response temperature respective PTC-sensor, the resistance of sensor changes rapidly into higher state. The relay of OUT69 module release and switch contactor off so as to give protection to motor. This module resets when the temperature drop 3K(total resistance approximate 2.7KΩ) Features: 1.Overload(overheat)protection 2.Inner encapsulation 3.Pollution Class:4 4.Pressure resistance:4000VAC