HRC Fuse: Its Features, Types, and Advantages


HRC fuse stands for “High rupturing capacity”, are intended to safeguard electrical circuits having either a dc or ac switch in particular situations. They have fully sealed fuses with high breakdown capabilities created via an extensive study by researchers or manufacturers.

Features of an HRC Fuse

  • This fuse is distinguished by its potential to prevent an over-current in a circuit. When the current exceeds the specified value, the fuse quickly burns and breaks the connection, even if the over-current significantly exceeds the circuit’s rated value.
  • This fuse has a wire that safely conducts the short-circuit electricity for a set amount of time. If the fault is solved during this time, it does not blow off; otherwise, it melts and disconnects the circuit from the supply; hence, the system stays safe.
  • HRC fuses comprise glass or chemical compounds. By closing the cage firmly, air cannot enter the fuse. The ceramic shell formed with a metal cover fused with combustible wire on both sides of the fuse. Based on various conditions, other chemical compounds are employed in HRC fuse production and building.
  • The materials and design of the fuse define the opening speed and rated current handling capabilities.
  • The ideal qualities of this fuse are less expensive, has a low melting point with high conductivity, and are free from oxidation-related damage.

Types of HRC Fuses

1) Fuse type – NH

  • These fuses are not heavy but smaller in size and have a solid dimension.
  • Protects against overload current and short circuits.

Usage: protects motor starters and other equipment against overload and short circuits.

2) Fuse Type- DIN

  • Available in a wide range of rated currents
  • Having the ability to operate at varied temperatures and excellent cleaning capability.

Usage: In the transformers, gas-insulated switchgear, air and mining industries, etc.

3) Fuse type – Spade or Blade

  • These are less in weight and have a lower cutoff current.
  • Having a plastic body and two metal covers to fit within the socket.
  • Available in varied sizes, forms, and different current ratings.

Usage- in automobiles to protect from short-circuits and in motors to provide backup protection.

Advantages of HRC Fuse

  • Operation is quick.
  • High breaking strength.
  • The expense of maintenance is almost nothing.
  • Simple and straightforward to set up.
  • Remove all fault currents, both high and low.
  • They do not degrade over time.
  • They consistently deliver good results.
  • The best protection for overload, open circuits, and reverse current.
  • They give dependable service.
  • They are of low price as compared to others.
  • Safeguard the system against faulty wiring for shifting devices.


The current that circulates in an electrical circuit is limited. Fuse is the weakest link in an electrical circuit having a dc or ac switch as it protects the entire system from severe damage caused by over-current or short circuit problems. HRC fuse by INDOASIAN offers high-speed working along with short-circuit and over-current protection. They also ensure industrial power distribution stability, chip protection, and backup safety to a circuit breaker.

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