... -40.5(24kV available) vacuum disconnect load break switch(Short for LBS, load switch or switch disconnector) and fuse combination apparatus is used ... , long mechanism life, there is an security leakage between main switch,disconnect blade and earthing blade, it can operate frequently.It ... standard of GB16927, IEC420 & IEC62271-105. Indoor Vacuum Load break switch(load switch, switch disconnecter,LBS)