Thermal Cut Out Fuse Product introduction of thermal cut out fuse The thermal cut out fuse is an electric heating alloy that uses the resistance characteristics of the material to make a heating element. There are two main categories: one is iron-chromium aluminum alloy with ferrite structure,...
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Thermal Cut Out Fuse
When the circuit breaks down or is abnormal, the current will continue to rise, and the rising current may damage some important components in the circuit, or burn the circuit or even cause a fire. If the thermal cut out fuse is correctly placed in the circuit, the fuse will fuse and cut off the current when the current rises to a certain height and heat abnormally, thereby protecting the safe operation of the circuit.
The Shape of Thermal Cut Out Fuse
1. Filamentous. Early original fuses were directly locked with screws and used in old switches and sockets of various sizes.
2. Flake (bare flake). It is easier to use than the old style silk.
3. Glass tube. There are several different sizes, which are common in electronic products.
4. Ceramic tube. There are several different shapes and sizes to avoid glass bursting.
5. Plastic sheet with metal sheet pins: car fuse.
6. Surface bonding device (SMD) type.
7. Cylindrical shape, plug-in type: directly welded to the circuit board for use inside the product.
Thermal cut out fuse can be divided into overcurrent protection and overheating protection according to the form of protection. The fuse used for over-current protection is the usual fuse (also called current-limiting fuse). It used for overheating protection is generally called "thermal fuse". It is divided into low melting point alloy type, temperature sensitive trigger type and memory alloy type, etc. (thermal fuse is to prevent heating appliances or heat-prone appliances from overheating and protect them, such as: hair dryer, electric iron, rice Pots, electric stoves, transformers, motors, etc.; it responds to the rise in temperature of electrical appliances and does not care about the working current of the circuit. Its working principle is different from "current limiting fuse").
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