This is the limit of the safe temperature range for the fuse. The holding temperature, normally measured in Celsius, defines what temperature the fuse can operate at continuously without blowing. These are key measurements to consider when choosing the right thermal fuse for your application. For example, thermal fuses can be found in hairdryers, tumble dryers and coffee machines.What is the difference between functioning temperature and holding temperature?All thermal fuses have a holding temperature rating and functioning temperature rating. They are a safety device that helps to prevent fires. Thermal fuses, also called thermal cutoffs, are a safety device used in electrical circuits to provide protection against appliances overheating. This will complete the circuit again and your appliance can be used.What are thermal fuses used for?Thermal fuses are used to protect appliances from overheating and can be found in domestic and industrial applications. Thermal fuses are designed to detect heat that arises from an overcurrent that occurs within an electrical system.

It opens circuits to prevent overheating. However, as the appliance cools, the wax pellet will cool and solidify. What is a thermal fuse According to SWE, a thermal fuse is a component that serves as a safety device.

For resettable fuses, when the wax pellet within melts, the circuit is broken. Resettable fuses are available but tend to have a higher upfront cost than single-use counterparts. Once the pellet or piece or wire has melted, the thermal fuse will need replacing before you can operate your appliance again. This is called 'blowing out' or 'burning out'.Single-use thermal fuses and resettable thermal fusesMost thermal fuses are single-use and non-resettable. When the pellet or piece of wire melts, the circuit breaks. THey are used extensively in 240V mains rated appliances including, heaters. Thermal fuses typically contain a small pellet within them or have a thin piece of wire which melts at a certain temperature. These devices go open circuit permanently when they reach their rated temperature. For thermal fuses, the limit is based on temperature. Thermal fuses are normally supplied in an axial or radial package, although some thermal fuses are now available as a chip.How do thermal fuses work?Thermal fuses work in a similar way to electrical cartridge fuses when the conditions exceed a certain limit, the circuit will be broken. Thermal Fuses Thermal fuses, also called thermal cutoffs, are a safety device used in electrical circuits to provide protection against appliances overheating.