... Vacuum load break switch with fuse, range 24kV, 36kV, 630A,1250A FZ(R)N-40.5(24kV available) vacuum disconnect load break switch( ... Short for LBS, load switch or switch disconnector) and fuse combination apparatus is used for 35KV substation, small ... standard of GB16927, IEC420 & IEC62271-105. Indoor Vacuum Load break switch(load switch, switch disconnecter,LBS)