Thermal cutoff fuse

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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. The difference from the electrical fuse is in using the surrounding temperature, instead of the temperature generated by ohmic heating of the fusible element. The elements are conductive and usually consist of binary or ternary fusible alloy of tin , bismuth , antimony , indium , lead , and other metals. Thermal fuses are usually found in heat-producing electrical appliances such as coffeemakers and hair dryers. They function as safety devices to disconnect the current to the heating element in case of a malfunction such as a defective thermostat that would otherwise allow the temperature to rise to dangerous levels, possibly starting a fire.

Another mechanism is more similar to an electrical fuse, a fusible element that melts when subjected to temperature above its threshold. Reset Temperature: For resettable devices, thermal cutoff fuse, the temperature at which the device is specified to revert back to its non-fault mode. Product Selection Guide : Table of Contents.

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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.

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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Selection Characteristics. Click Here. Contact Us Careers My Bourns. Type the code from the image. Current Rating Amps : Indicates the maximum current value at which a device is certified for operation. How easy was it to find what you were looking for on our website? Quick survey. When the pellet melts, the spring is released, separating the contacts and breaking the circuit. This mitigates the impact of programs resembling power viruses on the processor's longevity, while still accommodating their possible legitimate uses; it can also make overclocking possible with less risk. 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.

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Some thermal switches must be reset manually after having tripped. Yes No. Earls, Robert E. Media Links. Hello, I was looking for a thermal fuse which would be used in a 24V DC application. Approval Agency: An indication that the product meets the minimum safety standards of an approving agency. Do you wish to proceed? One mechanism is a small meltable pellet that holds down a spring. Product Selection Guide : Table of Contents. Bourns offers Design Kits that include several of these product lines Call your local Bourns representative or contact us direct for assistance. We use cookies to provide our visitors with an optimal site experience. Product Examples. Typical use is for motor overheat protection. Any help would be very much appreciated, Thanks in advance, Paul Sojo. Contact Us Careers My Bourns.