Rotary drive for an electrical switch with toggle-lever actuation

A rotary drive for an electrical switch attached to a switch base and actuated by a toggle lever having a first end position and a second end position, the toggle lever being disposed at a front of the switch and being swivelable about a first axis of rotation, the rotary drive comprising:

• an operative connection having a first portion and a second portion, the operative connection being swivelable about a second axis of rotation, the first axis of rotation and the second axis of rotation approximately coinciding;
• a first catch element disposed on the first portion of the operative connection, the first catch element being coupled to the toggle lever;
• a second catch element disposed on the second portion of the operative connection at a back of the switch;
• a mounting plate disposed parallel to the switch base;
• a rotatable shaft disposed through the mounting plate;
• a swivel arm disposed on the shaft;
• a manual rotary knob coupled to the shaft and configured to rotate the shaft;
• and
• a mechanical connection coupling the swivel arm and the second catch element and configured to convert a rotational movement of the shaft into a swiveling movement of the operative connection;
• wherein a swivel movement of the toggle lever is transferred into a swivel movement of the second catch element, and wherein a length of the swivel arm is configured so as to enable the operative connection to be swiveled to an extent of a rotation of the shaft so as to move the toggle lever from the first end position to the second end position.