Fusible wire fuses are a type of fuse used to prevent excessive currents in electrical circuits. These fuses work by melting a conductive wire when a certain current flows. The intensity of the current flowing through the fuse depends on the diameter, length and material of the fuse wire.
For what purposes are fusible wire fuses used? These devices are generally produced in cylindrical shape and are used in fuse boxes. The most widely used material of the mentioned fuses is tin. However, the wire material of fusible-wire fuses used in high voltage applications is usually silver or copper. Fusible fuses are available in different sizes and ratings. These values express a certain current carrying capacity of the fuse. In cases where excessive current occurs, the fuse melts immediately and breaks the circuit.
Let’s talk about some features of fusible wire fuses. The greater the current flowing through the fuse, the easier it is for the fuse wire to reach its melting temperature. Therefore, the thickness, melting temperature and length of the fuse wire must be chosen correctly. The rated current of fusible-wire fuses usually ranges from 1A to 30A. However, it can rise up to 200 A. The intensity of the current flowing through the fuse is indicated on the fuse in a way that can be easily read from the fuse box. The rated current ratings are related to the current rating for which the fuse is designed and determine the maximum current carrying capacity of the fuse. These values are determined by the value of the current when the fuse should blow and open the circuit.
Fusible wire fuses cannot be reused once melted. It is necessary to replace the fuse. These products are a type of fuse commonly used to ensure the safety of electrical circuits. However, in modern electronic devices different types of fuses can be used to limit the electric current. These include types such as thermal fuses, PTC fuses, electronic fuses and differential fuses.