Thermal cutoff fuse

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A thermal cutoff is an electrical safety device either a thermal fuse or thermal switch that interrupts electric current when heated to a specific temperature. These devices may be for one-time use a thermal fuse , or may be reset manually or automatically a thermal switch. A thermal fuse is a cutoff which uses a one-time fusible link. Unlike a thermal switch which may automatically reset itself when the temperature drops, the thermal fuse is more like an electrical fuse : a single-use device that cannot be reset and must be replaced when it fails or is triggered. A thermal fuse is used when the overheating is a result of a rare occurrence, such as failure requiring repair which would also replace the fuse or replacement at the end of service life. One mechanism is a small meltable pellet that holds down a spring.

Thermal cutoff fuse

We use cookies to provide our visitors with an optimal site experience. View our privacy notice and cookie notice to learn more about how we use cookies and how to manage your settings. By proceeding on our website you consent to the use of cookies. Thermal Cutoffs Thermal Fuses are devices designed to keep components safe in situations when an excessive temperature occurs. When the rated functioning temperature of the thermal cutoff is exceeded, the device will fail open in the electrical circuit, breaking the flow of current. Selection Characteristics. Holding Temperature: The maximum allowable device temperature under normal non-fault conditions. Reset Temperature: For resettable devices, the temperature at which the device is specified to revert back to its non-fault mode. Current Rating Amps : Indicates the maximum current value at which a device is certified for operation. Approval Agency: An indication that the product meets the minimum safety standards of an approving agency. These agencies are either government entities or private third-party labs that protect consumer safety. This selection was determined to be the closest industry standard applicable to the suppliers device packaging.

Contact Us Careers My Bourns. A thermal cutoff is an electrical safety device either a thermal fuse or thermal switch that interrupts electric current when heated to a specific temperature. Thermal fuses are usually found in heat-producing electrical appliances such as coffeemakers and hair dryers, thermal cutoff fuse.

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Most of us are familiar with the principle of fuses and how they work to help to keep electronics and other electrical systems operating smoothly. They protect overcurrents surging through a system and frying the other components or causing a fire. What is a thermal fuse and how does it work? According to SWE , a thermal fuse is a component that serves as a safety device. It is also known as a thermal cutoff. It opens circuits to prevent overheating. Thermal fuses are designed to detect heat that arises from an overcurrent that occurs within an electrical system. The cause for the overcurrent could either be due to a breakdown in a component or a short circuit. Some of the functions of a thermal fuse are the same, e. When a thermal fuse is triggered it interrupts the current or stops it to stop the overheating of a circuit.

Thermal cutoff fuse

A thermal cutoff is an electrical safety device either a thermal fuse or thermal switch that interrupts electric current when heated to a specific temperature. These devices may be for one-time use a thermal fuse , or may be reset manually or automatically a thermal switch. A thermal fuse is a cutoff which uses a one-time fusible link. Unlike a thermal switch which may automatically reset itself when the temperature drops, the thermal fuse is more like an electrical fuse : a single-use device that cannot be reset and must be replaced when it fails or is triggered. A thermal fuse is used when the overheating is a result of a rare occurrence, such as failure requiring repair which would also replace the fuse or replacement at the end of service life. One mechanism is a small meltable pellet that holds down a spring. When the pellet melts, the spring is released, separating the contacts and breaking the circuit. Another mechanism is more similar to an electrical fuse, a fusible element that melts when subjected to temperature above its threshold.

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Current Rating Amps : Indicates the maximum current value at which a device is certified for operation. Did it take you more or less time than you expected to find what you were looking for? Call your local Bourns representative or contact us direct for assistance. Earls, Robert E. Similarly, the bimetal switch enhances the TCO solution by providing a higher operating current and precise control. The difference from the electrical fuse is in using the surrounding temperature, instead of the temperature generated by ohmic heating of the fusible element. Toggle limited content width. Thermal switches are part of the normal operation of older fluorescent light fixtures, where they are the major part of the starter module. How satisfied are you with the content? I was looking for a thermal fuse which would be used in a 24V DC application. Download as PDF Printable version. Another common design uses a bimetallic shallow dome-shaped cap which "clicks" to an inside-out inverted cap shape when heated, such as the "Klixon" brand of thermal cutouts.

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Unsourced material may be challenged and removed. This may lead to "cycling" flashing , where a light turns off and back on every few minutes. Tools Tools. A thermal fuse is used when the overheating is a result of a rare occurrence, such as failure requiring repair which would also replace the fuse or replacement at the end of service life. Discover the optimal solution for your specific application. Click Here. Markets Markets. Unlike a thermal fuse, a thermal switch is usually reusable and is therefore suited to protecting against temporary situations which are common and user-correctable. The difference from the electrical fuse is in using the surrounding temperature, instead of the temperature generated by ohmic heating of the fusible element. Reset Temperature: For resettable devices, the temperature at which the device is specified to revert back to its non-fault mode. A thermal fuse is a cutoff which uses a one-time fusible link. Holding Temperature: The maximum allowable device temperature under normal non-fault conditions.