On the outer shell (18) of a building (19) arranged switching device for interrupting an electrical power supply (1), in particular for switching off a photovoltaic system, wherein the electrical power supply (1) via supply lines (2) to a consumer (3) is connected Switching device comprises at least one mechanical switching contact (4), which by means of a force transmission element (5) from an operating position (6) is switched into an emergency stop position and actuated in this the mechanical switching contact (4), and the supply lines (2) Operation of the mechanical switching contact (4) are de-energized, wherein the force transmission element (5) at its first end (8) with a pivot bearing (9) and at its second end (10) with a baffle plate (11) is formed.
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