In a switching device with at least one first electrical switching device input and at least one first electrical switching device output and at least one second electrical switching device output, wherein in a first operating state of the switching device the first switching device input is electrically connected with the first switching device output, wherein in a second operating state of the switching device the first switching device input is electrically connected with the second switching device output, is proposed to configure the switching device for uninterrupted switchover from the first operating state to the second operating state and/or from the second operating state to the first operating state to allow functional testing of a fault current circuit breaker without interruption.