Over Temperature Protector
Over Temperature Protector type controls function like their name implies. The primary function of these devices is to provide high limit temperature protection in applications where the normal operating temperatures have increased due to over work or another type of fault condition. Generally, these devices will carry the full electrical load of the application. Depending on the type of fault condition that exists, many thermal controls utilized as over temperature protectors will function either by the thermal control "seeing" an increase in temperature in the application, or by "sensing" an increase in the electrical load in the application, or through a combination of these two conditions.