... SSYIIfuse-lines consist of upper and lower leaders,fuse element,button and auxiliary arc-extinguishing tube,the ... melting point alloy.The FLI fuse-link adopts fixed button the SFLII fuse-link adopts removable button,users can ... c)SFLIII fuse-link consists of upper and lower leaders,fuse elemelement and button.The material of fuse element is ... with one-way exhastion structure. SFL fuse link for drop-out ...