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What are heavy duty fuses?

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Captshally

Lvl 1
13y ago
Updated: 8/20/2019

The term "heavy duty fuses" is usually a common term applied to larger size fuses by the general public. The category of these types of fuses usually fall into the classification of a HRC fuse. High Rupture Capacity fuse.

Stopping current flow once it is started is against the nature of flowing current. It wants to keep flowing even if it has to jump an air gap to do so. The lower the amperage the less likely this is to happen.

In a non HRC fuse of higher capacity, once the fuse link has opened, the current may continue to flow for a short duration of time. With the HRC fuses there is silica sand surrounding the fuse link. When the link burns open, a tremendous amount of heat is generated and the silica sand around the fuse wire melts, creating a glass barrier to suppress the electric arc. This action shuts down the current flow immediately.

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13y ago

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