Thermal cutoffs are onetime safety devices that open an electrical circuit at a preset temperature to prevent overheating and reduce fire risk in electrical equipment. Function Opens the circuit when the rated temperature is reached, protecting components from heat damage. Key benefits Provides rapid overheat protection to prevent damage and potential fire. Supports safety compliance for appliances, power supplies, and equipment. Compact protection that fits within limited design space. Compatibility and selection Available in a range of trip temperatures and connection styles. Choose a model that matches your circuit voltage, current, and required trip temperature. Lead length and terminal options vary by model; ensure proper fit for your design. Size and materials Compact form factor; exact dimensions vary by rating and model. Body is typically metal or ceramic with insulated leads; construction is designed for use in temperature environments. Most thermal cutoffs are singleuse; after activation, a replacement unit is required. Performance and reliability Delivers fast, reliable trip at the specified temperature. Designed to perform consistently across typical ambient conditions when used as intended. Built for dependable operation in appropriate enclosures and applications. Use scenarios 1) Household appliances such as coffee makers, toasters, or hair dryers where overheating can occur; the cutoff interrupts power to prevent damage or fire. 2) Power supplies, chargers, or battery packs where internal temperatures rise; protection helps prevent thermal damage and safety risks. 3) Electric motors and heating elements in industrial or commercial equipment; provides a safety shutoff during overheating conditions. Installation and maintenance Install according to the datasheet and wiring diagram for correct rating, mounting, and connection. After a trip, the unit with a thermal cutoff to restore protection. Verify the chosen model matches the application's temperature rating and electrical requirements.