Circuit Protection

Thermal Cutoff

A thermal cutoff is an electrical safety device (either a thermal fuse or a thermal switch)—a device designed to keep components safe in situations when an excessive temperature occurs. When the rated operating temperature of the thermal cutoff is exceeded, the device will fail to open in the electrical circuit and cut off the current. These devices may be for one-time use (a thermal fuse) or reset manually or automatically (a thermal switch).