Lesi sihloko siqhathanisa ngokujulile ubuchwepheshe obuyisisekelo kanye nezimo zokusetshenziswa kwama-circuit breakers ezinhlobo ezintathu ezinkulu zamazwe ngamazwe: i-Schneider, i-Siemens, ne-ABB. Ngokuhlaziya uchungechunge lwe-Flagship njenge-Masterpact MTZ, Compact NSX (Schneider), 3WL, 3VA (Siemens), ne-Emax 2, Tmax XT DC (ABB), izinzuzo zomkhiqizo ngamunye zembulwa kusukela ezinhlangothini ezintathu: imingcele yezobuchwepheshe, ukuqamba okusha okusebenzayo, kanye nezinhlelo zokusebenza ezijwayelekile: I-Schneider igcizelela kahle izixazululo zedijithali, ukuhlanganiswa kwe-Siemens nokuklanywa okusekwe kudijithali okuhle. ukusebenza, futhi i-ABB yenze impumelelo kuma-algorithms ahlakaniphile kanye nobuchwepheshe be-DC. Ucwaningo luveze ukuthi le mikhiqizo emithathu emikhulu ikhuthaza ukuvela kwama-circuit breaker ekuhlanganisweni okuphezulu, ukuguquguquka kwemvelo, kanye nobuhlakani ngokuhlanganiswa kwe-inthanethi Yezinto, ukuthuthukiswa kwezinto ezibonakalayo, kanye nokuthuthukiswa kokuphathwa kwamandla, ukuhlinzeka ngezixazululo ezenziwe ngokwezifiso zokufinyelela kwamandla amasha kanye nezidingo zegridi yamandla eziyinkimbinkimbi.