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.
Working Principle of HRC Fuse: Under normal operating conditions the current flowing through the Fuse element does not provide enough energy to melt the element. ... The chemical reaction between the fuse element vapour and filling powder results into high resistance material which helps in extinguishing the arc.