The vacuum switch operates the linked pressure switch, when the pressure falls below the adjustable switching pressure. If the symbol is used as a pressure switch the respective switch is operated when the pressure exceeds the switching pressure.
|Type||Pressure switch, Vacuum switch||Vacuum switch|
|Switching pressure||-0.1 ... 2 MPa||-0.04|
|Hysteresis||0 ... 1 MPa||0|