Vacuum Switches

Vacuum switches are electronic or mechanical devices which are used in pneumatic systems to allow pressure or vacuum to flow from one place to another, ensuring that the overall system remains stable. These switches are used in many applications for pressure control and safety interlock functionality, ensuring that optimal conditions are maintained.

Vacuum switches regulate the flow of a vacuum between two spaces, ensuring it's always present where needed. Vacuum switches operate under different pressure types (negative, electro-mechanical, relative, or compound pressure). The required operating conditions for your system will determine the best switch choice.

Vacuum pressure switches are designed for sensing pressure changes in a vacuum. A pre-set point will be determined, and once this is reached or surpassed, the vacuum switch will either open or close the electrical connection.

Types of pressure and vacuum switches

These 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 will impact which one you choose. These switches also have different types of connection, different maximum and minimum pressure settings, and varying voltage drops.

Digital hydraulic pressure switches are pressure sensors used as responsive devices to track fluid pressure levels. They close off electrical contacts when the determined fluid pressures are attained. They are designed to either make contact upon pressure increases, or on pressure decreases.

What are digital hydraulic pressure switches used for?

Digital Hydraulic Pressure Switches are used as automatic supervisory products in systems containing pressurised fluids. The manufacturing industry make use of them as feedback devices to highlight spikes and drops in fluid pressures. They are typical in mobile industrial equipment with modern displays, where the oil pressure will be shown as numeric and alarms activated if the engine pressure levels drop beyond certain points.

Applications:

Vacuum switches can be used in various industrial environments. They are considered to be an essential device for monitoring and control tasks in hydraulic and processing industries. These type of switches can sense a change in the vacuum and will open or close an electrical circuit when the set point is reached.


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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庫存編號 100-0674
製造零件編號PAC50-BCD
BrandSick
HK$1,543.26
單位
-1bar 1 bar Negative Pressure, Positive Pressure Air G 1/4 Female, M12 4-Pin, 4 mm Pneumatic Hose - 17 → 30V dc M12, 1/4 in PAC50 Normally Closed, Normally Open G, Metric 0°C +60°C IP65, IP67
RS庫存編號 297-0052
BrandRS PRO
HK$372.93
單位
1bar 12 bar Positive Pressure - G 1/4 Adjustable 250V ac 1/4 in F4 Normally Closed, Normally Open G -25°C +85°C IP65
RS庫存編號 296-9989
BrandRS PRO
HK$1,504.04
單位
2bar 40 bar Positive Pressure Oil G 1/4 Adjustable 250V ac/dc 1/4 in K5 Normally Closed, Normally Open G -20°C +80°C IP65
RS庫存編號 297-0080
BrandRS PRO
HK$459.48
單位
20bar 200 bar Positive Pressure - G 1/4 Adjustable 250V ac 1/4 in F4 Normally Closed, Normally Open G -25°C +85°C IP65
RS庫存編號 847-7048
製造零件編號ZS-38-A1
BrandSMC
HK$51.08
單位
- - - - - - - - ZS - - - - -
RS庫存編號 723-012
製造零件編號81513552
BrandCrouzet
HK$677.18
單位
2bar 8 bar Positive Pressure Air, Gas, Liquid Push In Adjustable 220 → 230V 4 mm 81 Normally Closed, Normally Open - -10°C +70°C IP20
RS庫存編號 302-5759
製造零件編號IS 3000-F02
BrandSMC
HK$908.63
單位
- 8 bar Positive Pressure Air, Gas Rc 1/4 - 30V dc, 125 V ac, 125 V dc, 250 V ac 1/4 in IS3000 Normally Closed, Normally Open Rc -5°C +60°C -
RS庫存編號 363-5968
BrandRS PRO
HK$659.75
單位
1bar 10 bar Positive Pressure - G 1/4 Adjustable 250V ac/dc 1/4 in K3 Normally Closed, Normally Open G -20°C +80°C IP65
RS庫存編號 366-3979
製造零件編號0880200
BrandNorgren
HK$1,221.32
單位
0.2bar 2 bar Positive Pressure Gas, Liquid G 1/4 - - 1/4 in 18D Normally Closed, Normally Open G 0°C +80°C IP65
RS庫存編號 246-2416
製造零件編號IS3000-02
BrandSMC
HK$900.01
單位
- 0.8 MPa Positive Pressure Air, Gas Rc 1/4 - 30V dc, 125 V ac, 125 V dc, 250 V ac 1/4 in IS3000 Normally Closed, Normally Open Rc -5°C +60°C -
RS庫存編號 407-6089
製造零件編號0882300
HK$1,298.89
單位
25bar 250 bar Positive Pressure Fluid, Oil G 1/4 - - 1/4 in 18D Normally Closed, Normally Open G -20°C +80°C IP65
RS庫存編號 822-3951
製造零件編號0880400000000000
HK$1,198.42
單位
1bar 16 bar Vacuum Gaseous, Hydraulic, Liquid Fluid, Neutral, Non-Combustible Water Application, Pneumatic, Vacuum G 1/4 Electromechanical Relay - 1/4 in 18D Normally Closed, Normally Open G -10°C +85°C IP65
RS庫存編號 535-2299
製造零件編號0862442000000000RS
BrandNorgren
HK$5,650.84
單位
0bar 10 bar Positive Pressure Air, Gas G 1/8 - 10.8 → 30V dc 1/8 in 40D - G 0°C +50°C IP65
RS庫存編號 511-6655
製造零件編號SCPSD-060-04-16
BrandParker
HK$3,849.61
單位
0bar 60 bar Positive Pressure - G 1/4 - 1.5V dc 1/4 in SCPSD - G -20°C +85°C IP65, IP67
RS庫存編號 725-305
製造零件編號ZSM1-021L(P31806-01)
BrandSMC
HK$869.72
單位
-80kPa -27 kPa Vacuum Air, Gas R 1/8 Reed 100V ac/dc 1/8 in ZSM1 - R -5°C +60°C -
RS庫存編號 701-3551
製造零件編號ZSE80F-F02-B
BrandSMC
HK$2,732.98
單位
-100kPa 100 kPa Compound Pressure Fluid G 1/4 Reed 12 → 24V dc 1/4 in ZSE80 - G 0°C +50°C IP65
RS庫存編號 880-2299
BrandRS PRO
HK$1,102.95
單位
0.2bar 2.5 bar - Fluid 1/4 in BSP Male Adjustable 250V ac 1/4 in F4 Normally Closed, Normally Open G -25°C +85°C IP65
RS庫存編號 777-069
製造零件編號04015600
BrandNorgren
HK$1,370.34
單位
0bar 10 bar Positive Pressure Air, Gas G 1/8 - 24 V dc, 240V ac 1/8 in 040 Normally Closed, Normally Open G -20°C +80°C IP65
RS庫存編號 389-6006
製造零件編號PS1-P1091
BrandParker
HK$763.13
單位
2bar 5 bar Positive Pressure - - - 250V - PS1 Normally Closed, Normally Open - -15°C +60°C -
RS庫存編號 843-0367
製造零件編號IS3000-N02
BrandSMC
HK$899.38
單位
- 0.8 (Operating) MPa, 1 (Proof) MPa - Air, Inlet Gas NPT 1/4 Reed 125 V dc, 250V ac 1/4 IS3000 Normally Closed, Normally Open NPT -5°C +60°C IP40