12kV 630A Imashini yo gusimbuza amavuta ifite imyanya ine yagenewe kuba mu kabati ko guhindura impeta ka US-box gakozwe kugira ngo gahuze n'ibipimo bya IEEE, IEC na GB by'ibikenewe byose. Ishobora gukoreshwa mu buryo bwo hasi cyangwa munsi y'ubutaka.

Imashini ikoresha amavuta mu gushyiramo ibintu bine, hafi y’inyuma ya transformateur, ishobora kugabanya umuyoboro w’imbere. Ubushobozi bw’insinga, bityo ikagabanya cyane umuyoboro mu gukurura ferromagnetic. Gushyiraho ku mpande no gushyira hejuru birahari. Ku transformateur ikoreshwa mu masanduku rusange yo muri Amerika cyangwa transformateur itwikiriwe.