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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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. 821-3689
Mfr. Part No.83282-00000100-05
BrandHoneywell
£28.16
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 779-4204
Mfr. Part No.PS61-20-4MGZ-A-SP
£23.90
Each
Units
40 → 150psi - Hydraulic SPST-NO 42 V dc 40psi 150psi BSP 1/4 - Spade Terminal -9°C +110°C - -
RS Stock No. 124-2176
Mfr. Part No.XMPC06C2374
£43.00
Each
Units
0.2 → 4.8 (Falling) bar, 1 → 6 (Rising) bar Differential Air, Fresh Water, Sea Water 3NC - 0.2 (Falling) bar, 1 (Rising) bar 4.8 (Falling) bar, 6 (Rising) bar G1/2 - Screw Clamp -25°C +70°C <3.5 (Repeat) % -
RS Stock No. 739-6721
Mfr. Part No.PK7524
£146.48
Each
Units
0 → 10bar Relative Gas, Liquid PNP-2NO 9.6 → 32 V dc 0bar 10bar G1/4 - M12 Connector -25°C +80°C <±2.5 % -
RS Stock No. 820-7035
Mfr. Part No.6742-0052
BrandHerga
£49.92
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. 452-8883
Mfr. Part No.401001/000-459-405-502-20-601-61/000
BrandJumo
£170.56
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. 124-2171
Mfr. Part No.XMPA12B2142
£36.00
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. 518-4434
BrandRS PRO
£93.54
Each
Units
0 → 10bar Gauge Gas, Liquid Analogue 10 → 30 V dc 0bar 10bar G1/4 4 → 20 mA M12 Connector -20°C +125°C ≤0.5 % ≤3 ms
RS Stock No. 779-4254
Mfr. Part No.PS71-30-4MGZ-C-HC
£56.60
Each
Units
65 → 300psi - Air, Hydraulic SPDT 125/250 V 65psi 300psi BSP 1/4 - Screw Terminals -9°C +85°C - -
RS Stock No. 739-6724
Mfr. Part No.PK7521
£146.48
Each
Units
0 → 250bar Relative Gas, Liquid 2NO 9.6 → 32 V dc 0bar 250bar G1/4 - M12 Connector -25°C +80°C <±2.5 % -
RS Stock No. 779-4257
Mfr. Part No.PS71-10-4MGZ-C-HC
£56.60
Each
Units
10 → 30psi - Air, Hydraulic SPDT 125/250 V 10psi 30psi NPT 1/4 - Screw Terminals -9°C +85°C - -
RS Stock No. 124-2126
Mfr. Part No.9013FSG2J21
BrandSquare D
£26.18
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. 779-4250
Mfr. Part No.212344-RS
£56.60
Each
Units
25 → 75psi - Air, Hydraulic SPDT 125/250 V 25psi 75psi NPT 1/4 - Screw Terminals -9°C +85°C - -
RS Stock No. 124-2124
Mfr. Part No.9013FHG2J27
BrandSquare D
£24.93
Each
Units
40 → 100 (Rising)psi Differential Air 2NC - 40 (Rising)psi 100 (Rising)psi 0.25 in NPSF - Screw Clamp -33°F +257°F ±3 (Repeat) % -
RS Stock No. 123-6131
Mfr. Part No.251858
£48.60
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. 835-2839
Mfr. Part No.XMLR010G1N25
£298.00
Each
Units
0 → 10bar Differential Air, Fresh Water, Hydraulic Oil, Refrigerator Fluid Analogue, 1 x NPN 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. 124-2163
Mfr. Part No.XMPA06B2131
£33.00
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. 124-2170
Mfr. Part No.XMPA12B2131C
£29.13
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. 748-4717
Mfr. Part No.ISE40A-01-R
BrandSMC
£106.10
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. 739-6715
Mfr. Part No.PK7520
£150.78
Each
Units
0 → 400bar Relative Gas, Liquid 2NO 9.6 → 32 V dc 0bar 400bar G1/4 - M12 Connector -25°C +80°C <±2.5 % -
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