How Fuse Link Works ?
Jun 10, 2022
The so-called fuse with Copper Cap, according to the name, can also understand one or two, that is, a device that Copper End Caps melts and disconnects. Its working principle is very simple: we know that when the circuit is short-circuited, the instantaneous current will be very high, and the conductive wire will be heated at the same time. If there is no fuse link which with Copper End Cap in the circuit to protect it, it is likely to burn out the electrical equipment.
In order to protect the electrical equipment from being accidentally short-circuited and burn out, people have invented fuses with Copper Metal End Cap and connected them in series to the circuit. The key part is the special metal wire or conductive sheet with a low melting point. The high current will cause the conductive part of the fuse to heat up, reach the melting point, melt, disconnect and lose the link to cut off the current. Thereby protecting the electrical equipment. The big fuse housekeeper should have heard of it, and that is the Copper End Cap Fitting fuse. As shown in the figure below, some low-voltage fuses which have Copper Outer Cap suitable for low-voltage environments are widely used in various electrical equipment and digital electronic products.
An electrical appliance that uses a metal conductor as a melt in series in a circuit. When an overload or short-circuit current passes through the melt, it will fuse due to its own heat, thereby breaking the circuit. The fuse which made of Copper Slip Cap has a simple structure and is easy to use, and is widely used as a protection device in power systems, various electrical equipment and household appliances.
The Copper Metal End Cap fuse is mainly composed of three parts: the melt, the shell and the support. The melt is the key element to control the fusing characteristics. The material, size and shape of the melt determine the fusing characteristics.
Melt materials are divided into two categories: low melting point and high melting point. Low melting point materials such as lead and lead alloys have a low melting point and are easy to Copper Outer Cap fuse. Due to their large resistivity, the cross-sectional size of the melt is larger, and more metal vapor is generated during fusing. It is only suitable for fusing with low breaking capacity. device.
High melting point materials such as copper and silver meld strip have a high melting point and are not easy to fuse. However, due to their low resistivity, they can be made into smaller cross-sectional dimensions than low melting point melts, and generate less metal vapor when fused, which is suitable for high breaking points. capable fuse. The shape of the melt is divided into two types: filament and ribbon. Changing the shape of the variable section can significantly change the fusing characteristics of the Copper Outer Cap fuse.
