Pressure Switches

Pressure switches work by forming an electrical contact when its input is subjected to a certain amount of fluid or air pressure.

How They Work
Pressure switches can activate with either rising or falling fluid pressure, so are essential components in any pressurized fluid system where automatic supervision is required.

Uses for pressure switches
Pressure switches are used in a variety of systems. For example, a pneumatic pressure switch would be used to automatically switch off an electric air compressor when the desired pressure had been achieved in, for instance, a car tire. Hydraulic pressure switches have a number of applications in the automotive industry, such as measuring oil levels.

Media
The RS Range of Pressure Switches can accommodate the measuring of a variety of media, such as air and gas for pneumatic applications, and everything from oil to sea water in fluid applications.

Pressure Switch Types
There are four key variations of pressure switch available in the RS range.
• Relative or Gauge Pressure Switches are calibrated for a variety of different purposes, and measure pressure relative to a given value.
• Differential Pressure Switches are commonly used for sensing a difference in pressure between two points in a system
• Vacuum Pressure Switches provide electrical feedback to measure a rise or fall of pressure in a system.

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Viewing 1 - 20 of 297 products
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Description Price Pressure Range Pressure Reading Type Media Measured Output Type Supply Voltage Minimum Pressure Reading Maximum Pressure Reading Process Connection Analogue Output Electrical Connection Minimum Operating Temperature Maximum Operating Temperature Accuracy Response Time
RS Stock No. 748-4723
Mfr. Part No.ZSE40AF-01-R
BrandSMC
TWD6,399.00
Each
units
-100 → 100kPa Vacuum Gas Analogue 12 → 24 V dc -100kPa 100kPa BSP 1/8 1 → 5 V, 4 → 20 mA Wire Lead -5°C +50°C ±0.2 % 2.5 ms
RS Stock No. 124-2127
Mfr. Part No.9013FSG2J21M4
BrandSquare D
TWD1,551.00
Each
units
15 → 30 (Approximate) psi, 20 → 65 (Rising) psi Differential Fresh Water 2NC - 15 (Approximate) psi, 20 (Rising) psi 30 (Approximate) psi, 65 (Rising) psi 0.25 in NPSF - Screw Clamp -33°F +257°F ±3 (Repeat) % -
RS Stock No. 124-2160
Mfr. Part No.XMLR400M1P25
TWD14,456.00
Each
units
20 → 388 (Falling) bar, 32 → 400 (Rising) bar Differential Air, Fresh Water, Hydraulic Oil, Refrigerator Fluid Analogue, PNP-NO/NC 24 V dc 20 (Falling) bar, 32 (Rising) bar 388 (Falling) bar, 400 (Rising) bar G1/4 4 → 20 mA M12 4-Pin Connector -20°C +80°C ≤0.2 (Repeat) %, ≤0.6 (Output) %, ≤1 (Overall) % ≤10 (Analogue) ms, ≤5 (Discrete) ms
RS Stock No. 821-3689
Mfr. Part No.83282-00000100-05
BrandHoneywell
TWD1,266.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 124-2128
Mfr. Part No.9013FSG2J24
BrandSquare D
TWD1,189.00
Each
units
15 → 30 (Approximate) psi, 20 → 65 (Rising) psi Differential Fresh Water 2NC - 15 (Approximate) psi, 20 (Rising) psi 30 (Approximate) psi, 65 (Rising) psi 0.25 in NPSF - Screw Clamp -33°F +257°F ±3 (Repeat) % -
RS Stock No. 124-2126
Mfr. Part No.9013FSG2J21
BrandSquare D
TWD1,177.00
Each
units
15 → 30 (Approximate) psi, 20 → 65 (Rising) psi Differential Fresh Water 2NC - 15 (Approximate) psi, 20 (Rising) psi 30 (Approximate) psi, 65 (Rising) psi 0.25 in NPSF - Screw Clamp -33°F +257°F ±3 (Repeat) % -
RS Stock No. 748-4717
Mfr. Part No.ISE40A-01-R
BrandSMC
TWD4,819.00
Each
units
-0.1 → 1MPa Vacuum Gas Analogue 12 → 24 V dc -0.1MPa 1MPa BSP 1/8 1 → 5 V, 4 → 20 mA Wire Lead -5°C +50°C ±0.2 % 2.5 ms
RS Stock No. 124-2121
Mfr. Part No.9012GAW6
TWD12,300.00
Each
units
5 → 250 (Decreasing) psi, 10 → 49 (Differential) psi Differential Air, Hydraulic Oil, Non-Corrosive Gas, Non-Corrosive Liquids SPDT-NO/NC 240 V ac, 250 V dc 5 (Decreasing) psi, 10 (Differential) psi 49 (Differential) psi, 250 (Decreasing) psi 0.25 in NPTF - 0.5 in NPT -10°F +185°F <4 (Repeat) % -
RS Stock No. 748-4720
Mfr. Part No.ZSE40AF-01-T
BrandSMC
TWD6,399.00
Each
units
-100 → 100kPa Vacuum Gas Analogue 12 → 24 V dc -100kPa 100kPa BSP 1/8 1 → 5 V, 4 → 20 mA Wire Lead -5°C +50°C ±0.2 % 2.5 ms
RS Stock No. 779-4200
Mfr. Part No.PS61-10-4MGZ-A-SP
TWD1,075.00
Each
units
15 → 60psi - Hydraulic SPST-NO 42 V dc 15psi 60psi BSP 1/4 - Spade Terminal -9°C +110°C - -
RS Stock No. 820-7035
Mfr. Part No.6742-0052
BrandHerga
TWD2,244.00
Each
units
60 → 120psi - Air, Gas, Liquid, Oil SPCO 220 V dc, 250 V ac 60psi 120psi BSP 1/8 - Spade Terminal -5°C +70°C ±10 % -
RS Stock No. 135-3751
Mfr. Part No.XMLG006D23
TWD7,213.00
Each
units
0 → 6bar - Air, Corrosive Fluid, Fresh Water, Hydraulic Oil, Sea Water Analogue 12 V dc, 24 V dc 0bar 6bar - 4 → 20 mA M12 3-Pin Connector -15°C +85°C ±0.1 % 2 ms
RS Stock No. 176-7939
Mfr. Part No.XMLPM09BD290
TWD5,512.00
Each
units
-1 9bar - Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid Analogue 12 24 V dc -1bar 9bar 7/16 - 20 UNF SAE 4 20 mA 4 Pin M12 Male Connector -30°C +85°C ±0.5 (Measurement) %, 0.1 % 2 ms
RS Stock No. 176-7902
Mfr. Part No.XMLP1K0PD130
TWD5,771.00
Each
units
0 → 1000psi - Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid Analogue 5 V dc 0psi 1000psi - 0.5 → 4.5 V 4 Pin M12 Male Connector -30°C +85°C ±0.5 (Measurement) %, 0.1 % 2 ms
RS Stock No. 162-2079
Mfr. Part No.XMLP016BD21F
TWD4,292.00
Each
units
0 16bar Differential Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid Analogue 12 24 V dc 0bar 16bar - 4 20 mA 4-Pin Male Connector -30°C +85°C ±0.5 % 2 ms
RS Stock No. 177-8871
Mfr. Part No.XMLP006GC11F
TWD4,517.00
Each
units
0 → 6bar - Air, Fresh Water, Gas, Hydraulic Oil Analogue 5 V dc 0bar 6bar - 0.5 → 4.5 V 3 Pin Male Connector -30°C +85°C ±0.5 % <=2 ms
RS Stock No. 162-2075
Mfr. Part No.XMLP010BC21F
TWD4,292.00
Each
units
0 10bar Differential Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid Analogue 12 24 V dc 0bar 10bar - 4 20 mA 3-Pin Male Connector -30°C +85°C ±0.5 % 2 ms
RS Stock No. 123-6131
Mfr. Part No.251858
TWD2,185.00
Each
units
0.7 4.1bar - Gas, Liquid SPST-NO - 0.7bar 4.1bar BSP 1/4 - 1/4 x 1/32 Spade Terminal -40°C +121°C ±0.1 bar -
RS Stock No. 123-6135
Mfr. Part No.251234
TWD1,075.00
Each
units
55 → 135bar - Liquid SPST-NO - 55bar 135bar BSP 1/4 - 1/4 x 1/32 Spade Terminal -40°C +121°C ±3.3 bar -
RS Stock No. 123-6139
Mfr. Part No.251238
TWD1,075.00
Each
units
205 → 300bar - Liquid SPST-NO - 205bar 300bar BSP 1/4 - 1/4 x 1/32 Spade Terminal -40°C +121°C ±13.1 bar -