vacuum switches
| Product | Brand | Connection size | Material | Seal material | Contacts | Max pressure (bar) | Electrical connection | Max switch capacity | Switch hysteresis | Connection type | Max. overpressure (bar) | Pressure sensor feature | Max temperature (°C) | Min temperature (°C) | Min pressure (bar) | Suitable for oil | Thread size | Measuring element | Degree of protection (IP) | Suitable for gases |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
-0.98 to -0.2bar SPDT Brass Vacuum Switch G1/8'' 42VAC...PSL-B-N-0P98-0P2-OC-FP-V
+2 days
|
Tameson | 1/8 inch | Brass | NBR (nitrile rubber) | Changeover contact | -0.2 | Flat plug-in connection | 5 A / 30 V DC, 5 A / 42 V AC | 15 - 25 percent | Outer thread cylindrical... | 2 | For vacuum | 85 | -25 | -0.98 | Yes | 1/8 inch | Membrane | IP65 | No |
-0.95 to -0.2bar NO Brass Vacuum Switch G1/8'' 42VAC/DC...0151-45215-3-001
+2 days
|
SUCO | 1/8 inch | Brass | FKM (FPM) | Normally open | -0.2 | Screw terminal | 100 VA / 42 V AC/DC | 5 - 15 percent | Inner thread cylindrical... | 20 | For vacuum | 120 | -5 | -0.95 | Yes | 1/8 inch | Membrane | IP65 | No |
-0.98 to -0.2bar SPDT Aluminium Vacuum Switch G1/4''...PSL-A-N-0P98-0P2-OC-TA-V
+2 days
|
Tameson | 1/4 inch | Aluminium | NBR (nitrile rubber) | Changeover contact | -0.2 | DIN-A | 5 A / 30 V DC, 5 A / 250 V AC | 15 - 25 percent | Inner thread cylindrical... | 2 | Can be turned 360 deg, For... | 85 | -25 | -0.98 | Yes | 1/4 inch | Membrane | IP65 | No |
$85.27
+2 days
|
Barcontrol | 1/4 inch | Zinc die-cast | NBR (nitrile rubber) | Changeover contact | -0.15 | DIN-A | 3 A / 24 V DC, 6 A / 250 V AC | 100 - 250 mbar | Inner thread cylindrical... | 20 | For vacuum, With adjustment... | 80 | -20 | -0.85 | Yes | 1/4 inch | Membrane | IP65 | No |
$85.27
+2 days
|
Barcontrol | - | Zinc die-cast | NBR (nitrile rubber) | Changeover contact | -0.15 | DIN-A | 3 A / 24 V DC, 6 A / 250 V AC | 100 - 250 mbar | Flange 5.3x20 | 20 | For vacuum, With adjustment... | 80 | -20 | -0.85 | Yes | - | Membrane | IP65 | No |
$89.16
+2 days
|
Barcontrol | - | Zinc die-cast | NBR (nitrile rubber) | Changeover contact | -0.15 | Plug-in connection M12 | 3 A / 24 V DC, 6 A / 250 V AC | 100 - 250 mbar | Flange 5.3x20 | 20 | For vacuum, With adjustment... | 80 | -20 | -0.85 | Yes | - | Membrane | IP67 | No |
-0.95 to -0.1bar SPDT Aluminium Vacuum Switch G1/8''...0150-45615-4-001
+2 days
|
SUCO | 1/8 inch | Aluminium | ECO | Changeover contact | -0.1 | DIN-A | 3.5 A / 30 V DC, 3.5 A /... | 10 - 30 percent | Inner thread cylindrical... | 20 | For vacuum | 100 | -20 | -0.95 | Yes | 1/8 inch | Membrane | IP65 | No |
-0.95 to -0.2bar NC Brass Vacuum Switch G1/8'' 42VAC/DC...0151-45315-3-001
+2 days
|
SUCO | 1/8 inch | Brass | FKM (FPM) | Normally closed | -0.2 | Screw terminal | 100 VA / 42 V AC/DC | 5 - 15 percent | Inner thread cylindrical... | 20 | For vacuum | 120 | -5 | -0.95 | Yes | 1/8 inch | Membrane | IP65 | No |
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.
