Iyo ndeye electro-mechanical mune zvakasikwa.Chinonyanya kukosha apa ndechekuti:
1.Inogona kuiswa waya mune chero nzira.
2.Inoenderana neIEC/EN 61008-1 (mains voltage yakazvimirira RCCB), Iyo ine electro-mechanical release inoshanda zvakachengeteka kunyange pasina magetsi ekupa kana mutsara wemagetsi pasi pe50V.
3.Type -A: Inodzivirira kubva kumhando dzakakosha dzekusarira pulsating DC iyo isina kukwenenzverwa.
4.Kudzivirirwa kwevanhu pakurwisana nemagetsi nekubata zvakananga (30 mA).
5.Kudzivirirwa kwevanhu pakurwisana nemagetsi nekusangana kusina kunanga (300 mA).
6.Kudzivirirwa kwezvigadziro panjodzi dzemoto (300 mA).
7. Inopa kuchengetedzwa kwakazara kune dzimba uye zvekutengesa masisitimu ekugovera.