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. 124-2171
Mfr. Part No.XMPA12B2142
$73.79
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. 779-4204
Mfr. Part No.PS61-20-4MGZ-A-SP
$63.54
Each
units
40 → 150psi - Hydraulic SPST-NO 42 V dc 40psi 150psi BSP 1/4 - Spade Terminal -9°C +110°C - -
RS Stock No. 124-2170
Mfr. Part No.XMPA12B2131C
$62.37
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. 779-4254
Mfr. Part No.PS71-30-4MGZ-C-HC
$149.31
Each
units
65 → 300psi - Air, Hydraulic SPDT 125/250 V 65psi 300psi BSP 1/4 - Screw Terminals -9°C +85°C - -
RS Stock No. 748-4720
Mfr. Part No.ZSE40AF-01-T
BrandSMC
$245.94
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. 124-2174
Mfr. Part No.XMPA12C2142
$158.10
Each
units
- Differential - 3 N/C - 1.3bar 12bar G1/4 - Screw Terminals -30°C +100°C ±0.5 % -
RS Stock No. 124-2125
Mfr. Part No.9013FSG2J20
BrandSquare D
$43.86
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. 821-3683
Mfr. Part No.83298-00000100-01
BrandHoneywell
$57.01
Each
units
10 → 35psi Vacuum Air, Fuel, Oil SPST-NO 6 → 24 V dc 10psi 35psi NPT 1/8 - Screw Terminals -40°F +250°F - -
RS Stock No. 124-2163
Mfr. Part No.XMPA06B2131
$54.02
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. 779-4200
Mfr. Part No.PS61-10-4MGZ-A-SP
$63.54
Each
units
15 → 60psi - Hydraulic SPST-NO 42 V dc 15psi 60psi BSP 1/4 - Spade Terminal -9°C +110°C - -
RS Stock No. 752-2431
Mfr. Part No.9012GBW1
BrandSquare D
$675.50
Each
units
16 → 90psi Differential Gas, Liquid Level - 600 V 16psi 90psi NPT 1/4 - 12" NPT -40°C +120°C ±0.1 → 1 % -
RS Stock No. 779-4235
Mfr. Part No.PS61-20-4MGZ-B-SP
$63.54
Each
units
40 → 150psi - Hydraulic SPST-NC 42 V dc 40psi 150psi BSP 1/4 - Spade Terminal -9°C +110°C - -
RS Stock No. 779-4272
Mfr. Part No.215419-RS
$192.54
Each
units
25 → 75psi - Air, Hydraulic SPDT 125/250 V 25psi 75psi BSP 1/4 - Screw Terminals -9°C +85°C - -
RS Stock No. 748-4723
Mfr. Part No.ZSE40AF-01-R
BrandSMC
$261.32
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. 779-4216
Mfr. Part No.PS61-40-4MGZ-A-SP
$62.29
Each
units
150 → 500psi - Hydraulic SPST-NO 42 V dc 150psi 500psi BSP 1/4 - Spade Terminal -9°C +110°C - -
RS Stock No. 124-2172
Mfr. Part No.XMPA12B2144C243
$109.36
Each
units
- Differential - 2 N/C - 1.3bar 12bar G1/4 - Screw Terminals -30°C +100°C ±0.5 % -
RS Stock No. 123-6131
Mfr. Part No.251858
$82.34
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. 124-2131
Mfr. Part No.XMLA160E2S11
$243.77
Each
units
4.5 → 142 (Falling) bar, 10 → 160 (Rising) bar Differential Fresh Water 1CO 240 V ac, 250 V dc 4.5 (Falling) bar, 10 (Rising) bar 142 (Falling) bar, 160 (Rising) bar G1/4 - Screw Clamp -25°C +70°C <2 (Repeat) % -
RS Stock No. 820-7035
Mfr. Part No.6742-0052
BrandHerga
$104.55
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. 752-2437
Mfr. Part No.9012GAW6
$836.50
Each
units
10 → 49psi Differential Gas, Liquid Level - 600 V 10psi 49psi NPT 1/4 - 12" NPT -40°C +120°C ±0.1 → 1 % -
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