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 352 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. 123-6131
Mfr. Part No.251858
$92.39
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. 124-2170
Mfr. Part No.XMPA12B2131C
$69.98
Each
units
0.3 → 10.3 (Falling) bar, 1.3 → 12 (Rising) bar Differential Air, Fresh Water, Sea Water 2NC - 0.3 (Falling) bar, 1.3 (Rising) bar 10.3 (Falling) bar, 12 (Rising) bar G1/4 - Screw Clamp -25°C +70°C <3.5 (Repeat) % -
RS Stock No. 779-4257
Mfr. Part No.PS71-10-4MGZ-C-HC
$100.44
Each
units
10 → 30psi - Air, Hydraulic SPDT 125/250 V 10psi 30psi NPT 1/4 - Screw Terminals -9°C +85°C - -
RS Stock No. 779-4279
Mfr. Part No.217464-RS
$254.16
Each
units
10 → 30psi - Air, Hydraulic SPDT 125/250 V 10psi 300psi BSP 1/4 - Screw Terminals -9°C +85°C - -
RS Stock No. 779-4250
Mfr. Part No.212344-RS
$167.53
Each
units
25 → 75psi - Air, Hydraulic SPDT 125/250 V 25psi 75psi NPT 1/4 - Screw Terminals -9°C +85°C - -
RS Stock No. 820-7035
Mfr. Part No.6742-0052
BrandHerga
$117.31
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. 779-4204
Mfr. Part No.PS61-20-4MGZ-A-SP
$71.29
Each
units
40 → 150psi - Hydraulic SPST-NO 42 V dc 40psi 150psi BSP 1/4 - Spade Terminal -9°C +110°C - -
RS Stock No. 124-2119
Mfr. Part No.9012GAW4
$510.54
Each
units
1.5 → 7.5 (Decreasing) psi, 3.5 → 15 (Differential) psi Differential Air, Hydraulic Oil, Non-Corrosive Gas, Non-Corrosive Liquids SPDT-NO/NC 240 V ac, 250 V dc 1.5 (Decreasing) psi, 3.5 (Differential) psi 7.5 (Decreasing) psi, 15 (Differential) psi 0.25 in NPTF - 0.5 in NPT -10°F +185°F <4 (Repeat) % -
RS Stock No. 779-4200
Mfr. Part No.PS61-10-4MGZ-A-SP
$71.29
Each
units
15 → 60psi - Hydraulic SPST-NO 42 V dc 15psi 60psi BSP 1/4 - Spade Terminal -9°C +110°C - -
RS Stock No. 779-4288
Mfr. Part No.PS71-50-4MGS-C-HC
$160.40
Each
units
1000 → 3000psi - Air, Hydraulic SPDT 125/250 V 1000psi 3000psi BSP 1/4 - Screw Terminals -9°C +85°C - -
RS Stock No. 779-4226
Mfr. Part No.PS61-10-4MGZ-B-SP
$71.29
Each
units
15 → 60psi - Hydraulic SPST-NC 42 V dc 15psi 60psi BSP 1/4 - Spade Terminal -9°C +110°C - -
RS Stock No. 752-2456
Mfr. Part No.9012GCW2
BrandSquare D
$878.46
Each
units
170 → 560psi Differential Gas, Liquid Level - 600 V 170psi 560psi NPT 1/4 - 12" NPT -40°C +120°C ±0.1 → 1 % -
RS Stock No. 124-2165
Mfr. Part No.XMPA06B2133NS1
$73.84
Each
units
- Differential - 2 N/C - 1bar 6bar G1/4 - Screw Terminals -30°C +100°C ±0.5 % -
RS Stock No. 124-2172
Mfr. Part No.XMPA12B2144C243
$122.70
Each
units
- Differential - 2 N/C - 1.3bar 12bar G1/4 - Screw Terminals -30°C +100°C ±0.5 % -
RS Stock No. 452-8883
Mfr. Part No.401001/000-459-405-502-20-601-61/000
BrandJumo
$330.03
Each
units
0 → 10bar Gauge, Relative Gas, Liquid Analogue 10 → 30 V dc 0bar 10bar G1/4 4 → 20 mA Wire Lead -20°C +125°C ≤0.5 % ≤3 ms
RS Stock No. 835-2848
Mfr. Part No.XMLR010G1P25
$638.97
Each
units
0 → 10bar Differential Air, Fresh Water, Hydraulic Oil, Refrigerator Fluid Analogue, 1 x PNP 24 V dc 0bar 10bar G1/4 4 → 20 mA M12 Connector -20°C +80°C ≤0.1 % ≤10 (Analogue) ms, ≤5 (Discrete) ms
RS Stock No. 518-4456
BrandRS PRO
$177.73
Each
units
0 → 16bar Relative Gas, Liquid Analogue 10 → 30 V dc 0bar 16bar G1/4 4 → 20 mA M12 Connector +20°C +125°C ≤0.5 % ≤3 ms
RS Stock No. 752-2443
Mfr. Part No.9012GBW22
BrandSquare D
$1,350.17
Each
units
27 → 130psi Differential Gas, Liquid Level - 600 V 27psi 130psi NPT 1/4 - 12" NPT -40°C +120°C ±0.1 → 1 % -
RS Stock No. 820-7026
Mfr. Part No.6742-0051
BrandHerga
$92.48
Each
units
45 → 75psi - Air, Gas, Liquid, Oil SPCO 220 V dc, 250 V ac 45psi 75psi BSP 1/8 - Spade Terminal -5°C +70°C ±10 % -
RS Stock No. 779-4235
Mfr. Part No.PS61-20-4MGZ-B-SP
$71.29
Each
units
40 → 150psi - Hydraulic SPST-NC 42 V dc 40psi 150psi BSP 1/4 - Spade Terminal -9°C +110°C - -
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