The fuse body made by pure copper or siver piece(or silver wire) is sealed in the fusion tube which is made by the high strength porcelain.

There is fullof the gigh-purity quartz sand processd after chemistry to take the extinguishingof arc medium in the tube.

The wo sides of the fuse use the spot welding to reliably connect with the end plate and to form the knife shape contact insert type structure.

The fuse may have fuse indicator or striker,when the fuse element fusing it can demonstrate fusing or transforms eachkind of signal as well as automatic transfer circuit(striker).