In order to know the meaning of the term fuse, it is necessary, first of all, to discover its etymological origin. In this case, we can state that it derives from Latin, specifically from “fusio”, which means “that can melt” and that it is the result of the sum of the following lexical components:
-The verb form “fusum”, which is the supine of “fundere”, which is synonymous with “melt”.
-The suffix “-ible”, which can be translated as “that can”.
The first meaning mentioned by the Royal Spanish Academy (RAE) refers to an adjective that qualifies what is liable to melt (that is, it can be melted, reduced or, if it is an electrical appliance, damaged).
The most common use of the term, however, specifically refers to a component of electrical installations what, when the current it becomes excessive, melts and interrupts it. A fuse, in this frame, is a sheet metal or metal wire.
Fuses are presented in a sheet or a filament made of an alloy or a metal that is characterized by having a low melting point. This element is located at a strategic point in the electrical installation so that it melts if the intensity of the current exceeds a certain value. Thus, when the fuse blows, it generates a current interruption and safeguards the integrity of the drivers, minimizing the risk of fire.
It can be said that a fuse is a protection element against eventual failures that can be registered in a electrical circuit. Fuses are present in household appliances, automobiles, and industrial facilities, for example.
There is a wide variety of fuses on the market today. However, among the most significant are some such as the following:
-The cartridges, which are identified because they consist of a tube that is made of insulating material.
-The cylindrical ones, which get their name because they are cylindrical tubes that are made of ceramic. Inside it is where the sheet that is responsible for carrying out the function of the fuse is located.
-The glass encapsulations, which are glass tubes and which have a sheet inside as well as metallic thread.
-The lead ones. Of these, we can point out the fact that they are the oldest that exist and that they are increasingly in disuse because they oxidize with some ease.
-The blades, which can be of two types: with striker and without striker. They also respond to the name NH.
-The screw cap, which are cylindrical tubes made of porcelain.
-The chicote, which are identified by having lead or metallic thread.
While some appliances have a single, very small fuse, other appliances may have several hundred fuses that can weigh up to twenty kilograms. In all cases, its function is the same: to interrupt the passage of electric current when the intensity grows dangerously. The circuit breaker It is another device that, in the event of a short circuit or an increase in intensity, prevents the current from continuing to circulate.