Pressure & Vacuum Switches

Pressure and vacuum switches are used in pneumatic systems to allow pressure or vacuum to flow from one place to another, ensuring that the overall system remains stable. They form part of the control system, ensuring that optimal conditions are maintained.

How do pressure and vacuum switches work?

Pressure and vacuum switches work in different ways. Pressure switches are controlled by the level of fluid pressure on the input. When the pressure reaches a certain level, an electrical contact will be closed, ensuring that the pressure stays within given bounds. Vacuum switches regulate the flow of vacuum between two spaces, ensuring it is present where it is needed.

Types of pressure and vacuum switches

Different pressure and vacuum switches operate under different types of pressure, such as negative pressure, electro-mechanical pressure, relative pressure and compound pressure. This is determined by the conditions in which they operate, and of course will impact which one you choose for your project. These switches also have different types of connection, different maximum and minimum pressure settings, and varying voltage drops.


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Description Price Minimum Operating Pressure Maximum Operating Pressure Pressure Type Suitable Media Connection Type Voltage Rating Connection Thread Size Manufacturer Series Contact Operation Connection Thread Standard Minimum Operating Temperature Maximum Operating Temperature IP Rating
RS Stock No. 302-5759
Mfr. Part No.IS 3000-F02
BrandSMC
HK$828.33
Each
units
- 8 bar Positive Pressure Air, Gas Rc 1/4 - 30 V dc, 125 V ac, 125 V dc, 250 V ac 1/4 in IS3000 Normally Closed, Normally Open Rc -5°C +60°C -
RS Stock No. 847-7048
Mfr. Part No.ZS-38-A1
BrandSMC
HK$46.56
Each
units
- - - - - - - - ZS - - - - -
RS Stock No. 725-305
Mfr. Part No.ZSM1-021L(P31806-01)
BrandSMC
HK$792.86
Each
units
-80kPa -27 kPa Vacuum Air, Gas R 1/8 Reed 100V ac/dc 1/8 in ZSM1 - R -5°C +60°C -
RS Stock No. 701-3551
Mfr. Part No.ZSE80F-F02-B
BrandSMC
HK$2,491.48
Each
units
-100kPa 100 kPa Compound Pressure Fluid G 1/4 Reed 12 → 24V dc 1/4 in ZSE80 - G 0°C +50°C IP65
RS Stock No. 843-0367
Mfr. Part No.IS3000-N02
BrandSMC
HK$819.90
Each
units
- 0.8 (Operating) MPa, 1 (Proof) MPa - Air, Inlet Gas NPT 1/4 Reed 125 V dc, 250 V ac 1/4 IS3000 Normally Closed, Normally Open NPT -5°C +60°C IP40
RS Stock No. 246-2416
Mfr. Part No.IS3000-02
BrandSMC
HK$820.48
Each
units
- 0.8 MPa Positive Pressure Air, Gas Rc 1/4 - 30 V dc, 125 V ac, 125 V dc, 250 V ac 1/4 in IS3000 Normally Closed, Normally Open Rc -5°C +60°C -
RS Stock No. 743-6598
Mfr. Part No.ZSE40A-01-T
BrandSMC
HK$1,627.78
Each
units
-101.3kPa 0 kPa Vacuum Air, Gas R 1/8 Reed 12 → 24V dc 1/8 in ZSE40A(F) - R -5°C +50°C IP65
RS Stock No. 826-2685
Mfr. Part No.ZSE10-M5-B-PG
BrandSMC
HK$900.09
Each
units
-101kPa 0 kPa Vacuum Air, Non Corrosive Gas, Non Flammable Gas M5 x 0.8 PNP Open Collector 12 → 24V dc M5 x 0.8 ZSE10 - Metric -5°C +50°C IP40
RS Stock No. 227-3632
Mfr. Part No.ZSM1-121L
BrandSMC
HK$739.94
Each
units
-80kPa -27 kPa Vacuum Air, Gas R 1/8 Reed 100V ac/dc 1/8 in ZSM1 - R -5°C +60°C -
RS Stock No. 844-4644
Mfr. Part No.PS1000-R06L
BrandSMC
HK$828.33
Each
units
- 1 MPa Positive Pressure Air, Non Corrosive Gas, Non Flammable Gas Push In 6 mm NPN, PNP - - PS1000 - - 0°C +60°C IP40
RS Stock No. 847-7035
Mfr. Part No.ZS-38-4G
BrandSMC
HK$174.01
Each
units
- - - - - - - - ZS - - - - -
RS Stock No. 873-2679
Mfr. Part No.ISE80-02-T
BrandSMC
HK$2,520.01
Each
units
-0.1MPa +1 MPa Positive Pressure Non Corrosive Fluid R 1/4 Reed, Solid State 12 → 24V dc 1/4 in ISE80 - R 0°C +50°C IP65
RS Stock No. 847-7026
Mfr. Part No.ZS-24-B
BrandSMC
HK$70.83
Each
units
- - - - - - - - ZS - - - - -
New
RS Stock No. 196-1151
Mfr. Part No.ISE80H-02-B
BrandSMC
HK$2,892.26
Each
units
-0.1MPa 2 MPa Positive Pressure - R 1/4 (M5 Female Threaded) Digital Pressure Switch 12 → 24V dc 1/4 in ISE80H - R 0°C +50°C IP65
RS Stock No. 721-4045
Mfr. Part No.ZSE30A-01-B-G
BrandSMC
HK$859.53
Each
units
- 500 kPa - - - - - M5 x 0.8, 1/8 in - - Metric, R - - -
RS Stock No. 826-8771
Mfr. Part No.ZSE40A-01-R
BrandSMC
HK$1,627.67
Each
units
-14.69psi 0 psi Vacuum Air, Non Corrosive Gas, Non Flammable Gas R 1/8 NPN Open Collector, Reed, Solid State 12 → 24V dc 1/8 in ZSE40A - R +23°F +122°F IP65
RS Stock No. 743-6605
Mfr. Part No.ISE30A-01-P
BrandSMC
HK$737.52
Each
units
-0.1MPa 1 MPa Positive Pressure Air, Gas R 1/8 - 12 → 24V dc 1/8 in ISE30A - R 0°C +50°C IP40
RS Stock No. 743-6623
Mfr. Part No.ZSE30AF-C6H-P-L
BrandSMC
HK$851.56
Each
units
-100kPa 100 kPa Compound Pressure Air, Gas - - 12 → 24V dc - ZSE30A(F) - - 0°C +50°C IP40
RS Stock No. 826-2528
Mfr. Part No.IS10M-20-L
BrandSMC
HK$777.03
Each
units
- 0.7 MPa Positive Pressure Air, Inert Gas Rc 1/8 Reed 100V ac/dc 1/8 in IS10 Normally Open Rc -5°C +60°C IP40
RS Stock No. 184-8550
Mfr. Part No.IS10E-40F04-6L-A
BrandSMC
HK$913.42
Each
units
0.1MPa 0.7 MPa - Air, Inert Gas G 1/2 Reed 100V ac/dc 1/2 in IS10 Normally Open G -5°C +60°C IP40