Ububanzi besicelo

♦Ama-circuit breaker ochungechunge lwe-S7D anezinzuzo zokubonakala okuncane, isisindo esincane, imisebenzi emihle kakhulu nethembekile, amandla aphezulu okuphuka, ukukhubeka okusheshayo kanye nokuphila isikhathi eside.
♦Ngokuqondene nokufakwa komhlahlandlela, ikesi kanye nezingxenye, zisebenzisa ipulasitiki ekwazi ukumelana nokushisa okuphezulu.
♦ Zisetshenziswa kakhulu kwisekethe ye-AC 50Hz/60Hz enevolumu yokusebenza elinganisiwe engu-415V noma ngaphansi inikeza amasekethe anokuvikelwa kokulayisha ngokweqile kanye nokwe-short-circuit, kanye nokwenza nokuphula idivayisi kagesi kanye nesekethe yokukhanyisa ngokungaphelele.
♦Umkhiqizo ungafakwa ngokukhululwa kwe-undervoltage kanye ne-shunt release, futhi ungasetshenziswa ukuhlukanisa, nokuvikela i-undervoltage yesekethe kanye nokuphula ibanga elide.