Circuit protection fuse

摘要

The fuse for the protection of electric circuits comprises a casing filled with quartz sand, terminal contacts and a fuse link made of aluminium or an aluminium alloy. The ratio of the mass of the quartz sand to the mass of the aluminium material of the fuse link is at least 40:1. The fuse link is made of strip metal conductors, the widest current-conducting section of each strip having a width-to-thickness ratio within the range of 2:1 to 100:1.