The fuse tube consists of an inner arc extinguishing tube and an outer epoxy glass tube. Load drop type fuse with added elastic auxiliary head and arc extinguishing cover for separation

Then form a closed position. When the system malfunctions, the fault current causes the fuse to quickly melt and form an arc. The arc extinguishing tube is heated by the arc and decomposes

The head loses tension and flips down, the locking mechanism releases the fuse tube, and the fuse tube falls, forming a clear breaking position. When a load needs to be pulled, use insulation

Generate an arc, which is elongated in the narrow slit of the arc extinguishing chamber, while the chamber produces gas. When the current crosses zero, the arc is extinguished.