If the tube is vacuumed, it is called a vacuum fuse. If the tube filled with SF6 gas, known as the SF6 fuse, the purpose is to improve the arc performance. As the quartz sand, vacuum and SF6 gas have good insulation properties, so this fuse is not only suitable for low pressure is also applicable to high pressure.
This fuse of the insulating tube if filled with quartz sand, the breaking current with a current limiting effect, can greatly improve the breaking capacity, it is also known as high breaking capacity fuse
The fuse is a completely sealed insulating tube with a metal cap or a stylus at both ends
then inserted in the bearing or directly connected to the circuit
The melt of the tube fuse is installed in the fuse
