A protective device for an electrical charging cable for connecting two mechanisms in a charging process. The protective device has a supporting frame and a jacket, which are designed to enclose a cavity extending in a longitudinal direction. Through the cavity a charging cable can be guided, and the supporting frame and the jacket are deformable in the longitudinal direction. A length of the protective device is to be modified and a length of the charging cable to be guided through the cavity is to be adapted between the two mechanisms.