HRC fuse or high rupturing capacity fuse- In that type of fuse, the fuse wire or element can carry short circuit heavy current for a known time period. During this time if the fault gets removed, then it does not blow off. Otherwise, it blows off or melts.

Disadvantages of H.R.C Fuse:

• After each operation, they have to be replaced.
• Heat being produced by the arc may affect the associated switches.

HRC(High Rupture Capacity) Fuse is the fuse used for protecting of electrical devices from short-circuit faults.

Place one of the multimeter leads on one end of the fuse. Place the other lead on the other end of the fuse. If the reading is between 0 and 5 Ω (Ohms), the fuse is good. A higher reading indicates a bad or degraded fuse.

RCDs are electrical safety devices designed to immediately switch off the supply of electricity when electricity leaking to earth is detected at harmful levels. They offer high levels of personal protection from electric shock.

In many industrial applications high breaking capacity (HBC) fuses are used to protect electrical installations against overcurrents, especially in the power distribution network. At high rated current, HBC fuses have more parallel fuselinks mounted inside.

Low voltage H.R.C. fuses may be built with a breaking capacity of 16,000 A to 30,000 A at 440V. They are extensively used on low-voltage distribution system against over-load and short-circuit conditions.

Look at the fuse wire. If there is a visible gap in the wire or a dark or metallic smear inside the glass then the fuse is blown and needs to be replaced.

A pure RCD will detect imbalance in the currents of the supply and return conductors of a circuit. But it cannot protect against overload or short circuit like a fuse or a miniature circuit breaker (MCB) does (except for the special case of a short circuit from live to ground, not live to neutral).

HRC Fuse (High Rupturing Capacity Fuse) and its Types Construction and Operations of HRC fuse: HRC Fuse consists of highly heat resistant material (such as ceramic) body having metal-end caps, which is welded by silver current carrying element. The fuse body internal space is completely packed with a filling powder.

The space between the body surrounding the Fuse element is filled filling powder such as with Silica Send, Chalk, plaster of peris etc. Under normal operating conditions the current flowing through the Fuse element does not provide enough energy to melt the element. The heat produced is absorbed by the surrounding filling powder.

Under normal operating conditions the current flowing through the Fuse element does not provide enough energy to melt the element. The heat produced is absorbed by the surrounding filling powder. If a large current flows the energy produced melts and vaporizes the fuse element before the fault current reaches the peak.

HRC fuses are used to protect the circuit from short circuits in HV switchgear. Thus, this is all about an overview of HRC fuse. From the above information finally, we can conclude that the capacity of the current-carrying of a fuse wire mainly depends on different factors such as the material, dimensions, length, diameter, shape, size, etc.