东莞市沃格精密电器有限公司

Fuse is one of the products we often use, there was a friend asked me, the fuse can not replace the copper wire, my answer can, why not?

Originally, although the fuse is a metal wire, but it is different from the ordinary copper wire, wire.

It is soft, is made of lead, antimony or lead, tin and other low melting point alloy made. Its resistivity is relatively large, the melting point is relatively low, fear of heat. Due to the thermal effect of the current, as long as the current from the fuse through the fuse exceeds the rated current, to fuse current, the fuse will quickly blow, automatically disconnect the circuit and power. In this way, the strong current can no longer enter the user's home, so as to prevent the circuit connected to the instrument, electrical or wire due to excessive current burned.

The fuse is broken and can not be replaced by copper wire or wire. If the use of copper wire or wire instead of the fuse, because of their high melting point, even if the strong current through, it will not blow, can not achieve the purpose of automatically cut off the current, not the role of insurance, is very dangerous.

In addition, the installation of the fuse, you must pay attention to select the appropriate size of the job. Fuse specifications are many, usually expressed by its rated current. For the same material of the fuse, the larger the cross-sectional diameter, the greater the allowable passing current. So in the choice of time, you must first according to the total wattage of the appliance to calculate the maximum operating current through the circuit, so that the rated current of the fuse is equal to or slightly larger than the maximum operating current of the circuit. This ensures that the fuse can work properly, but also to ensure that the fuse in the face of a large current when the rapid blow, cut off the circuit. If the fuse rated current is too large, when the circuit has a strong current through it, it will not fuse, it can not play the role of insurance, and then wire, wire is no different; if the rated current is too small, In the case of electricity, the fuse will blow, causing a power outage.