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. 518-4478
BrandRS PRO
SGD163.72
Each
units
0 → 40bar Gauge Gas, Liquid Analogue 10 → 30 V dc 0bar 40bar G1/4 4 → 20 mA M12 Connector -20°C +125°C ≤0.5 % ≤3 ms
RS Stock No. 518-4434
BrandRS PRO
SGD165.24
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. 518-4406
BrandRS PRO
SGD163.72
Each
units
0 → 1.6bar Gauge Gas, Liquid Analogue 10 → 30 V dc 0bar 1.6bar G1/4 4 → 20 mA M12 Connector -20°C +125°C ≤0.5 % ≤3 ms
RS Stock No. 518-4490
BrandRS PRO
SGD163.72
Each
units
0 → 2.5bar Gauge Gas, Liquid Analogue 10 → 30 V dc 0bar 2.5bar G1/4 4 → 20 mA M12 Connector -20°C +125°C ≤0.5 % ≤3 ms
RS Stock No. 518-4456
BrandRS PRO
SGD152.92
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. 518-4462
BrandRS PRO
SGD166.95
Each
units
0 → 25bar Gauge Gas, Liquid Analogue 10 → 30 V dc 0bar 25bar G1/4 4 → 20 mA M12 Connector -20°C +125°C ≤0.5 % ≤3 ms
RS Stock No. 518-4412
BrandRS PRO
SGD166.95
Each
units
0 → 4bar Relative Gas, Liquid Analogue 10 → 30 V dc 0bar 4bar G1/4 4 → 20 mA M12 Connector +20°C +125°C ≤0.5 % ≤3 ms
RS Stock No. 518-4428
BrandRS PRO
SGD163.72
Each
units
0 → 6bar Gauge Gas, Liquid Analogue 10 → 30 V dc 0bar 6bar G1/4 4 → 20 mA M12 Connector -20°C +125°C ≤0.5 % ≤3 ms
RS Stock No. 521-5342
BrandRS PRO
SGD163.72
Each
units
0 → 60bar Gauge Gas, Liquid Analogue 10 → 30 V dc 0bar 60bar G1/4 4 → 20 mA M12 Connector -20°C +125°C ≤0.5 % ≤3 ms
RS Stock No. 124-2128
Mfr. Part No.9013FSG2J24
BrandSquare D
SGD54.03
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. 124-2125
Mfr. Part No.9013FSG2J20
BrandSquare D
SGD43.99
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. 821-3689
Mfr. Part No.83282-00000100-05
BrandHoneywell
SGD45.72
Each
units
- - - - - - - - - - - - - -
RS Stock No. 779-4257
Mfr. Part No.PS71-10-4MGZ-C-HC
SGD84.83
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
SGD53.51
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. 124-2131
Mfr. Part No.XMLA160E2S11
SGD267.29
Each
units
10 → 160 (Rising) bar, 4.5 → 142 (Falling) bar Differential Fresh Water 1CO 240 V ac, 250 V dc 10 (Rising) bar, 4.5 (Falling) bar 142 (Falling) bar, 160 (Rising) bar G1/4 - Screw Clamp -25°C +70°C <2 (Repeat) % -
RS Stock No. 124-2121
Mfr. Part No.9012GAW6
SGD466.91
Each
units
10 → 49 (Differential) psi, 5 → 250 (Decreasing) psi Differential Air, Hydraulic Oil, Non-Corrosive Gas, Non-Corrosive Liquids SPDT-NO/NC 240 V ac, 250 V dc 10 (Differential) psi, 5 (Decreasing) psi 250 (Decreasing) psi, 49 (Differential) psi 0.25 in NPTF - 0.5 in NPT -10°F +185°F <4 (Repeat) % -
RS Stock No. 752-2437
Mfr. Part No.9012GAW6
SGD466.91
Each
units
10 → 49psi Differential Gas, Liquid Level - 600 V 10psi 49psi NPT 1/4 - 12" NPT -40°C +120°C ±0.1 → 1 % -
RS Stock No. 124-2169
Mfr. Part No.XMPA06C2374N
SGD66.99
Each
units
1 → 6 (Rising)bar Differential Air, Fresh Water, Sea Water 3NC - 1 (Rising)bar 6 (Rising)bar G1/2 - Screw Clamp -25°C +70°C <3.5 (Repeat) % -
RS Stock No. 124-2127
Mfr. Part No.9013FSG2J21M4
BrandSquare D
SGD70.52
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. 739-6721
Mfr. Part No.PK7524
SGD249.99
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 % -
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