Amafuse ohlobo lwe-“KB, KU, KS” ayingxenye yamafuse ohlobo lwe-“K” kanye no-“T” ngokwezinga le-IEC-282. Kunezinhlobo ezintathu: uhlobo oluvamile, uhlobo lwendawo yonke kanye nohlobo lwentambo. Lo mkhiqizo ulungele i-fuse yesigaba samandla kagesi engu-11-36kV.