3404.2323.22

3404.2323.22 Application Field and Working Principle

Fuses are widely used in electrical circuits. If the current in the circuit is too large, the fuse will disconnect the current, as if the switch is turned off, so as to protect the safety of the power grid and the circuits connected to it. The current-carrying parts of the fuse are made of special metal combustible materials, the so-called conductive pieces. When the current in the circuit is too large, these combustible pieces will be burned out and separated from the circuit, thereby interrupting the current.

Application Field

Fuses are mainly used in various manufacturing industries and other places that require strong current or ultra high current. For example, transformers that need to be protected are equipped with high-power fuses, and so are large pumps, motors and settings that require high power. Moreover, due to the small size of fuses, it is more convenient to be used in miniaturized devices, making it a cost-effective solution for devices that require small-scale protection fromcurrent.

Working Principle

The components and structures of the fuses mainly include the current-carrying apparatus and the outer casing. Inside the casing are the current-carrying apparatus and a pair of contact points. The current-carrying device is usually a cylindrical or ribbed copper material that can be burned out when the current exceeds the rated current. In addition, a fuse element can also be composed of an insulation tube with a pair of electrodes. In this way, when the current is too large, the fuse element will be heated to a certain temperature and cause an explosion. This causes a spark at the contact point of the fuse element, burning the metal and separating the contact point from the circuit. This is how the fuse works to protect the circuit.

Conclusion

To sum up, the fuse can be divided into two types according to the working principle, and the rated current of the fuse can be adjusted through its size and material. In addition to its advantages, such as small size, simple structure and low price, the fuse also has the advantages of fast reaction speed and strong over-current protection capability, and is a very important component for ensuring the safety of power engineering.