KI-66/KI-67 Series thermal protector are widely used electric motors of industrial, household appliance & other electric equipment. The KI-66/KI-67 series can effectively and reliable guard against the damage caused by overflow and overheat. The shell is made from heat resistant and heat conductive PBT engineering plastic. The product is applicable to the externally installed plastic sealed motors and household electric appliance The shell of enhanced type is applicable to the internally installed plastic sealed motors and is capable of tolerating the 3.5Mpa technical pressure for plastic molding. The performance complies with the standards of IEC34-11 GB13232 and GB/T13002 etc.