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Induction Motor Interview Questions with Answers | Part-1

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Various Types of Fuse!!!

Various Types of Fuse!!! And How it works???


Types of Fuse

Various Types of Fuse!!! And How it works???



  • We know that the main function of fuse is the protection of electrical equipments against high load current and any fault.

  • There are generally three types of Fuse which is shown below

  1. Rewireable Type Fuse
  2. Cartridge Type Fuse
  3. H.R.C. Type Fuse
  • All the the three types are described in detail below....

1. Rewireable Type Fuse

Kit kat type fuse
KitKat Fuse | Types of Fuse
  • This type of fuse commonly used in house wiring. It is also known as kit kat type fuse.

  • This type of fuse made of two porcelain parts

  1. Base and
  2. Fuse carrier

  • The base is connected with switch board.

  • Incoming wire is inserted from the one side and directly connected to the terminal wire.

  • Outgoing terminal is taken from the other terminal and also is called onward connection.

  • In base area, two terminal are connected through fuse wire which held in the fuse carrier.

Advantages of rewireable Type Fuse

  • Replacement of fuse is very easy.
  • Negligible cost
  • Removal of fuse is very easy

Disadvantages of rewireable Type Fuse

  • Breaking capacity is very low.
  • We can't use it for high current.
  • True value of fuse element is very difficult to determine.

2. Cartridge Type Fuse

Cartridge fuse
Cartridge Fuse | Types of Fuse 

  • This type of fuse have a totally enclosed area like a tube shape.

  • The fuse wire is carried by the container and fill with powder which is sealed at its endside with metallic material.

  • The perfect insulating path is provided by the power for the fuse which helps to absorb the arc when the blowing up of fuse.

  • This type of fuse generally used at 415v power supply.

Advantages of Cartridge Fuse

  • More accurate
  • The fuse element is non-deterioration.

Disadvantages of Cartridge Fuse

  • Cost is high for replacement
  • This type of fuse is not very economical.

3. High Rupturing Capacity Fuse 

H. R. C. Fuse
H R C type fuse | Types of Fuse

  • This type of fuses are used for heavy load at distribution system where heavy current can be flow.

  • This type of fuse know as HRC Fuse very well.

  • Operation of this type of fuse is very fast and also it will be absorb the heat very fast which is produced by the arc.

  • HRC fuse consists ceramic cylinder ahaps body which resist the heat and consist heavy copper contacts at main body.

  • Cylindrical body filled with non combustible powder which absorb the arc.

Advantages of HRC Fuse

  • More accurate rating.
  • High current breaking safely.
  • Operation is very fast.

Disadvantages of HRC Fuse

  • It will need to replace after each operation.
  • So very costly.

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