Ama-fuse ohlobo lwe-“KB, KU, KS” angaphansi kwama-fuse ohlobo lwe-“K” kanye ne-“T” ngokwezinga le-IEC-282. Kunezinhlobo ezintathu: uhlobo oluvamile, uhlobo olujwayelekile kanye nohlobo olunemicu. Lo mkhiqizo ufanelekela i-fuse yokulahla yeklasi ye-voltage engu-11-36kV.