Txij li thaum DC tsis muaj cov ntsiab lus xoom-hloov, DC rated voltage ntawm cov fuses qis feem ntau qis dua AC rated voltage, thiab ob qhov voltage qhov tseem ceeb yuav tsum tau qhia nyias. Yog tias qhov ntsuas hluav taws xob DC tsis qhia, nws tuaj yeem txiav txim siab raws li qee cov ntaub ntawv qhia tau muab los ntawm cov chaw tsim khoom. Rau fuses tsis muaj qhov qhia tawm DC qhov ntsuas hluav taws xob, DC tawg voltage (Uperm) ntawm lub fuse nyob ntawm:
—— AC rated voltage Un ntawm fuse;
—— Sij hawm tas li ntawm DC system t =L / RL; inductance tus nqi, R: kuj tus nqi
—— Cia siab tias tawg tam sim no Ip
