What Is HRC Fuse | Construction of HRC Fuse | Working Principle of HRC Fuse | Types of HRC Fuse

Hello friends, today we are going to talk about HRC Fuse, its construction, its working principle, and its type and use.

There is a limit to the current in an electrical circuit. Once the electrical circuit current exceeds the prescribed limit, it can cause major defects in the system. Fuse is used in electrical circuits only to prevent this defect. Thus a copper wire is used when if the current exceeds its capacity it melts and further the working device overload from it is saved from loss of views.

There are so many types of fuss in the market today we have to talk. The construction of the HRC fuse is about its working principle and its type and use.

What is an HRC Fuse?

Definition: The HRC fuse whose full name is the High Rupturing Capacity fuse is similar to a normal fuse in which the fuse wire carries a short circuit current up to a certain limit. If the flow exceeds this, it burns. HRC fuses are made from glass or some other type of chemical compound.

The fuse is tightly closed to prevent atmospheric air from entering it. The ends of the fuse are made of ceramic metal caps which are attached with flexible silver wire. There is a large amount of space on the inside of this which is around the wire otherwise the element of the fuse.

The HRC fuse is uniform, has the feature that it has very low tripping time if it has a high-pressure current. Similarly, if the fault current is not high, the break time is long.

Construction of HRC Fuse:

The HRC fuse is made of a material that has a high heat-resistant body like a ceramic. Metal-end caps are added to this ceramic body. Which is connected by an element carrying a silver-current.

The inside of the fuse body is filled with powder which contains the materials used such as quartz, plaster Paris f Paris, dust, marble, chalk, etc. Noise Causes The essence cannot overheat within the current. The heat generated evaporates the dissolved element.

The chemical reaction will take place between the filling power and the silver vapor, resulting in a high resistance material to help reduce the arc inside the fuse. Copper or silver is usually used in fuse due to their low resistance. A fuse element usually has two or more sections that are connected with the help of a tin.

The melting point of tin is 2400° C which is less than the melting point of silver like 980° C thus melting point of tin joints prevents fuse from getting high temperatures in case of short circuit and overload.

Working Principle of HRC Fuse:

Under normal conditions, the current does not generate enough heat to dissolve it. If more current passes than its limit the fault current melt the element of the fuse before it reaches its climax. When the fuse is in an overload condition the fuse ingredient does not melt but if such a condition lasts for a long time then a material like eutectic will melt and break the fuse element.

The thinner parts of the fuse element melt faster in a smaller area when the fuse is in a short circuit condition. And it will break before the eutectic material. HRC, therefore, has reason to provide limitations within the element of the fuse.

Hey, I am Vishnu patil. The Man Behind ElectricalGang I started this site to spread knowledge about Electrical Engineering. I am a Diploma Holder in Electrical Engineering