Drive arrangement for the displacement of a contacting device as well as contacting device and use thereof

A drive arrangement for displacing a contacting device from a raised position to a lowered position, said drive arrangement comprising:

• a four-joint linkage comprising a first arm, a second arm, and a third arm, said third arm having a free end for attachment of the contacting device, said first, second and third arms connected to one another such as to displace the contacting device as the first, second and third arms pivot;
• an actuator;
• and
• an actuating lever connecting the actuator to the first arm and acted upon by a spring force which counteracts an actuating force applied by the actuator on the actuating lever, said actuating lever being pivotally connected to the first arm and supportable on the first arm via a catch when the first arm is displaced into a raised position and detachable from the first arm when the first arm is displaced into a lowered position, so that the actuating lever assumes a release position in the lowered position of the contacting device, with the contacting device maintained in the lowered position by its weight force.