AC fuse electric arc extinguishing
When an arc is generated when a fuse is blown, the zero crossing provides an excellent opportunity to extinguish the arc. At the moment when the current reaches zero, the arc is
temporarily extinguished. The arc extinguishing material (high silicon sand) inside the fuse can cool down and separate the path of the arc, but it cannot restore the current.
DC fuse electric arc extinguishing
The direction and magnitude of the DC current are constant, without a zero crossing point. Once the fuse melts and produces an arc, the arc will continue to burn steadily because it does
not have a natural zero moment to interrupt it. To extinguish the DC arc, it relies entirely on the fuse’s own segmentation ability, such as elongating or cooling the arc
