A circuit breaker amatanthauza chipangizo chosinthira chomwe chimatha kutseka, kunyamula, ndi kusweka pakali pano m'nyengo yanthawi zonse ndipo chimatha kutseka, kunyamula, ndi kusweka mphamvu mkati mwa nthawi yodziwika bwino. Itha kugwiritsidwa ntchito kugawa mphamvu zamagetsi pafupipafupi. Imayambitsa mota ya asynchronous ndikuteteza chingwe chamagetsi ndi mota. Itha kungodula chigawocho pakangolemedwa kwambiri, dera lalifupi, kuperewera kwamagetsi ndi zolakwika zina zimachitika. Ntchito yake ndi yofanana ndi kuphatikiza kwa fuse switch ndi kutenthedwa ndi kutentha kwapang'onopang'ono, ndi zina zambiri, ndipo Sipafunikanso kusintha magawo mutatha kuswa cholakwika. Zakhala zikugwiritsidwa ntchito kwambiri.
Onani Zambiri