I-ZN12-40.5 uchungechunge lwe-Indoor high Voltage VCB, i-switchgear ye-vacuum ene-voltage elinganiselwe engu-40.5KV, i-3-isigaba se-AC 50HZ. Kungeniswa ubuchwepheshe be-3AF buvela kwa-Siemens Germany.I-VCB enjalo, ukusebenza nokushintsha kusemqoka. Isakhiwo sokusebenza singamandla agcinwe yintwasahlobo ezinikele, ingaqhutshwa yi-AC, DC, noma ngesandla. Isakhiwo se-VCB enjalo silula, sinamandla okuphuka, impilo ende yokukhuthazela, umsebenzi ophelele, ayikho ingozi yesiqhumane. ukugcinwa okulula. Ilungele ukulawula noma ukuvikela i-switchgear esiteshini samandla kagesi, igridi kagesi yasemadolobheni kanye nesiteshi esincane, ilungele ikakhulukazi izindawo ezidinga ukuphuka nokusebenza okuphuka njalo.