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 298 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
TWD14,598.00
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. 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. 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. 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. 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. 124-2121
Mfr. Part No.9012GAW6
TWD10,792.00
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. 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. 176-7872
Mfr. Part No.XMLP040BC21F
TWD4,317.00
Each
units
0 40bar - Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid Analogue 12 24 V dc 0bar 40bar - 4 20 mA EN 175301-803-A 3 Pin Male Connector -30°C +85°C ±0.5 (Measurement) %, 0.1 % 2 ms
RS Stock No. 176-7881
Mfr. Part No.XMLP060BC21F
TWD4,452.00
Each
units
0 60bar - Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid Analogue 12 24 V dc 0bar 60bar - 4 20 mA EN 175301-803-A 3 Pin Male Connector -30°C +85°C ±0.5 (Measurement) %, 0.1 % 2 ms
RS Stock No. 176-7873
Mfr. Part No.XMLP040BC270
TWD4,165.00
Each
units
0 40bar - Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid Analogue 12 24 V dc 0bar 40bar 7/16 - 20 UNF SAE 4 20 mA EN 175301-803-A 3 Pin Male Connector -30°C +85°C ±0.5 (Measurement) %, 0.1 % 2 ms
RS Stock No. 176-7882
Mfr. Part No.XMLP060BC290
TWD4,165.00
Each
units
0 60bar - Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid Analogue 12 24 V dc 0bar 60bar 7/16 - 20 UNF SAE 4 20 mA EN 175301-803-A 3 Pin Male Connector -30°C +85°C ±0.5 (Measurement) %, 0.1 % 2 ms
RS Stock No. 176-7874
Mfr. Part No.XMLP040BC290
TWD4,407.00
Each
units
0 40bar - Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid Analogue 12 24 V dc 0bar 40bar 7/16 - 20 UNF SAE 4 20 mA EN 175301-803-A 3 Pin Male Connector -30°C +85°C ±0.5 (Measurement) %, 0.1 % 2 ms
RS Stock No. 135-3790
Mfr. Part No.XMXA25L2135
TWD3,515.00
Each
units
3.5 → 25bar - Air, Fresh Water, Sea Water 1 C/O 240 V ac, 250 V dc 3.5bar 250bar - - Screw Clamp -25°C +70°C 3.5 % -
RS Stock No. 779-4266
Mfr. Part No.PS71-50-4MGZ-C-HC
TWD2,545.00
Each
units
1000 3000psi - Air, Hydraulic SPDT 125/250 V 1000psi 30000psi NPT 1/4 - Screw Terminals -9°C +85°C - -
RS Stock No. 124-2164
Mfr. Part No.XMPA06B2131C
TWD1,336.00
Each
units
0.2 → 4.8 (Falling) bar, 1 → 6 (Rising) bar Differential Air, Fresh Water, Sea Water 2NC - 0.2 (Falling) bar, 1 (Rising) bar 4.8 (Falling) bar, 6 (Rising) bar G1/4 - Screw Clamp -25°C +70°C <3.5 (Repeat) % -
RS Stock No. 177-8872
Mfr. Part No.XMLP2D5GC11F
TWD4,548.00
Each
units
0 → 2.5bar - Air, Fresh Water, Gas, Hydraulic Oil Analogue 5 V dc 0bar 2.5bar - 0.5 → 4.5 V 3 Pin Male Connector -30°C +85°C ±0.5 % <=2 ms