I-ZW8- 12 Series VCB, sisixhobo sokutshintsha amandla ombane aphezulu ngaphandle kunye nombane olinganisiweyo we-12KV, isigaba se-3 se-AC 50HZ. Ubukhulu becala esetyenziselwa ukwaphula umsinga womthwalo, umsinga womthwalo ogqithileyo kunye nomsinga wesekethe emfutshane yothungelwano lwamandla asemaphandleni, igridi yamandla asezidolophini kunye namandla amancinci inkqubo. Ulwakhiwo luyi-3-isigaba kwibhokisi enye.3-isigaba se-vacuum interrupter sikwibhokisi yentsimbi, imathiriyeli eyamkelweyo. I-SMC njengesigaba ukuya kwisigaba sokugqunywa kunye nokugquma komhlaba. Inokusebenza okuthembekileyo, inqanaba le-insulating liphezulu kakhulu.
I-ZW8- 12G yindibaniselwano ye-ZW8- 12 kunye nokutshintsha okukodwa, okubizwa ngokuba yindibaniselwano ye-breaker circuit, ingasetyenziswa njenge qhawula iiswitshi.
I-actuator yale mveliso luhlobo lwe-CT23, indlela yokutshaja yasentwasahlobo, ingaba luhlobo lombane okanye uhlobo lwencwadi.