A dryer thermal fuse is a safety device designed to protect the dryer from overheating. It is a small, heat-sensitive component that is typically located in the dryer's heating system or airflow path. The primary function of the thermal fuse is to open the electrical circuit and shut off power to the dryer if it detects excessively high temperatures. The thermal fuse is designed to open the circuit and cut off power to the dryer when it reaches a specific temperature threshold. This threshold is typically lower than the normal operating temperature of the dryer, ensuring that it only activates in the case of overheating.

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