US Patent 7679014 Pressure switch

In a pressure switch with a housing in which a plunger element is located that is movable against a spring force of a first elastic element—contacts being located directly or indirectly on the plunger element, and the first elastic element being located on the side of the plunger element facing toward or away from the media connection—a second elastic element is provided, against the spring force of which the plunger element can be moved. As a result, the pressure switch can be used for pressures>200 bar in situations where overall dimensions are small.