The invention relates to an actuation switch with transmission circuit and method for operating. The circuit has a transmission circuit for transmission of a signal through a potential barrier, and is capable of transmitting a first potential side provided with a first base potential to a second potential side provided with a second base potential. The transmission device is provided with one or two branches, each of which is provided with a first sub-branch and a second sub-branch. Capacitive working transmission units with a capacitive coupling provided between potential sides comprise ON transmission branches and OFF transmission branches. The capacitive coupling is formed between the potential sides. Two branches of the signal rest directly at an input of the ON transmission branches and against the OFF transmission branches over an inverter (INV1).