vacuum switches

Vacuum switches operate an electrical contact when a certain fluid pressure has been reached. When the pressure reaches the set-point or reset-point the pressure switch opens or closes the contacts to prevent under- or overpressure of a... Read more Read more

Product Brand Connection size Thread size Material Contacts Seal material Suitable for oil Max switch capacity Switch hysteresis Electrical connection Min pressure (bar) Max pressure (bar) Max. overpressure (bar) Connection type Pressure sensor feature Degree of protection (IP) Min temperature (°C) Max temperature (°C) Suitable for gases Measuring element
-0.98 to -0.2bar SPDT Brass...
+2 days
Tameson 1/8 inch 1/8 inch Brass Changeover contact NBR (nitrile rubber) Yes 5 A / 30 V DC, 5 A / 42 V AC 15 - 25 percent Flat plug-in connection -0.98 -0.2 2 Outer thread cylindrical... For vacuum IP65 -25 85 No Membrane
-0.95 to -0.2bar NO Brass...
+2 days
SUCO 1/8 inch 1/8 inch Brass Normally open FKM (FPM) Yes 100 VA / 42 V AC/DC 5 - 15 percent Screw terminal -0.95 -0.2 20 Inner thread cylindrical... For vacuum IP65 -5 120 No Membrane
-0.98 to -0.2bar SPDT...
+2 days
Tameson 1/4 inch 1/4 inch Aluminium Changeover contact NBR (nitrile rubber) Yes 5 A / 30 V DC, 5 A / 250 V AC 15 - 25 percent DIN-A -0.98 -0.2 2 Inner thread cylindrical... Can be turned 360 deg, For... IP65 -25 85 No Membrane
-0.85 to -0.15bar SPDT Zinc...
+2 days
Barcontrol 1/4 inch 1/4 inch Zinc die-cast Changeover contact NBR (nitrile rubber) Yes 3 A / 24 V DC, 6 A / 250 V AC 100 - 250 mbar DIN-A -0.85 -0.15 20 Inner thread cylindrical... For vacuum, With adjustment... IP65 -20 80 No Membrane
-0.85 to -0.15bar SPDT Zinc...
+2 days
Barcontrol - - Zinc die-cast Changeover contact NBR (nitrile rubber) Yes 3 A / 24 V DC, 6 A / 250 V AC 100 - 250 mbar DIN-A -0.85 -0.15 20 Flange 5.3x20 For vacuum, With adjustment... IP65 -20 80 No Membrane
-0.85 to -0.15bar SPDT Zinc...
+2 days
Barcontrol - - Zinc die-cast Changeover contact NBR (nitrile rubber) Yes 3 A / 24 V DC, 6 A / 250 V AC 100 - 250 mbar Plug-in connection M12 -0.85 -0.15 20 Flange 5.3x20 For vacuum, With adjustment... IP67 -20 80 No Membrane
-0.95 to -0.1bar SPDT...
+2 days
SUCO 1/8 inch 1/8 inch Aluminium Changeover contact ECO Yes 3.5 A / 30 V DC, 3.5 A /... 10 - 30 percent DIN-A -0.95 -0.1 20 Inner thread cylindrical... For vacuum IP65 -20 100 No Membrane
-0.95 to -0.2bar NC Brass...
+2 days
SUCO 1/8 inch 1/8 inch Brass Normally closed FKM (FPM) Yes 100 VA / 42 V AC/DC 5 - 15 percent Screw terminal -0.95 -0.2 20 Inner thread cylindrical... For vacuum IP65 -5 120 No Membrane
vacuum switches

vacuum switches

Vacuum switches operate an electrical contact when a certain fluid pressure has been reached. When the pressure reaches the set-point or reset-point the pressure switch opens or closes the contacts to prevent under- or overpressure of a system.

Tameson provides two main types of vacuum switches: electromechanical and mechanical (solid state). The mechanical vacuum switches are available with three different types of contacts: normally open (NO), normally closed (NC) and changeover (Single Pole, Double Throw or SPDT). The electronic vacuum switches have a digital display to set up the switching function. In a pressure switch, a diaphragm or a piston opens or closes a circuit when the pressure reaches the set-point or drops to a reset-point. In the mechanical vacuum switch, the setting pressure is typically adjusted with a hex key or turning knob. In the electrical vacuum switch the set-point and reset-point can be adjusted with a digital display. The difference between the switch point and the reset point is hysteresis. Hysteresis for mechanical vacuum switches is usually determined by the manufacturer, the hysteresis for electronic pressure vacuum is usually configurable.

Our vacuum switches are available with different types of housing material and seal. The media and temperature range are important to choose the material. Check our chemical resistance table to choose the correct material.

Other important factors to select a vacuum switch are: maximum overpressure, degree of ingress protection, ATEX approvals, reproducibility, resistance to vibration and shock, process connections, switch capacity and the type of electrical connection.