Thermal Cutoffs are temperature-sensitive circuit protection components designed to interrupt an electrical path when a defined thermal condition is reached. They provide a non-adjustable, one-time protective action by opening the circuit in response to excessive heat.

Within the Circuit Protection category, thermal cutoffs are used to help prevent overheating-related damage by providing a final safety disconnect when abnormal temperature rise occurs.

• Function: Opens the circuit when a specified temperature threshold is exceeded.
• Protection focus: Overtemperature protection through thermal sensing and disconnection.
• Operating nature: Typically non-resettable and intended for single-event protection.