摘要:
It is described a switching device (106) comprising a semiconductor switching unit (108a, 108b); a contactor (116a, 116b) electrically coupled in series with the semiconductor switching unit (108a, 108b); and a controller (122) being configured for activating an electrically isolating state of the switching device and/or activating an electrically conducting state of the switching device (106) based on a command signal (140) or based on a comparison of a measured value (134) and predetermined activation condition.