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. 739-6724
Mfr. Part No.PK7521
HK$1,653.47
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. 518-4428
BrandRS PRO
HK$1,070.10
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. 820-7035
Mfr. Part No.6742-0052
BrandHerga
HK$571.08
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. 739-6715
Mfr. Part No.PK7520
HK$1,426.82
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 % -
RS Stock No. 748-4723
Mfr. Part No.ZSE40AF-01-R
BrandSMC
HK$1,627.78
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. 835-2851
Mfr. Part No.XMLR250M1N25
HK$3,580.72
Each
units
0 → 250bar Differential Air, Fresh Water, Hydraulic Oil, Refrigerator Fluid Analogue, 1 x NPN 24 V dc 0bar 250bar G1/4 4 → 20 mA M12 Connector -20°C +80°C ≤0.1 % ≤10 (Analogue) ms, ≤5 (Discrete) ms
RS Stock No. 518-4434
BrandRS PRO
HK$1,070.10
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. 779-4229
Mfr. Part No.PS61-60-4MGZ-A-SP
HK$273.42
Each
units
400 → 1100psi - Hydraulic SPST-NO 42 V dc 400psi 1100psi BSP 1/4 - Spade Terminal -9°C +110°C - -
RS Stock No. 779-4200
Mfr. Part No.PS61-10-4MGZ-A-SP
HK$286.78
Each
units
15 → 60psi - Hydraulic SPST-NO 42 V dc 15psi 60psi BSP 1/4 - Spade Terminal -9°C +110°C - -
RS Stock No. 518-4456
BrandRS PRO
HK$1,070.10
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. 821-3689
Mfr. Part No.83282-00000100-05
BrandHoneywell
HK$322.15
Each
units
- - - - - - - - - - - - - -
RS Stock No. 748-4717
Mfr. Part No.ISE40A-01-R
BrandSMC
HK$1,225.92
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. 835-2867
Mfr. Part No.XMLR250M2P05
HK$2,631.62
Each
units
0 → 250bar Differential Air, Fresh Water, Hydraulic Oil, Refrigerator Fluid 2x PNP-NO/NC 24 V dc 0bar 250bar G1/4 - M12 Connector -20°C +80°C ≤0.1 % ≤5 ms
RS Stock No. 779-4272
Mfr. Part No.215419-RS
HK$982.70
Each
units
25 → 75psi - Air, Hydraulic SPDT 125/250 V 25psi 75psi BSP 1/4 - Screw Terminals -9°C +85°C - -
RS Stock No. 176-7879
Mfr. Part No.XMLP040BD290
HK$1,126.44
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 4 Pin M12 Male Connector -30°C +85°C ±0.5 (Measurement) %, 0.1 % 2 ms
RS Stock No. 176-7875
Mfr. Part No.XMLP040BD11F
HK$1,080.46
Each
units
0 → 40bar - Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid Analogue 5 V dc 0bar 40bar - 0.5 → 4.5 V 4 Pin M12 Male Connector -30°C +85°C ±0.5 (Measurement) %, 0.1 % 2 ms
RS Stock No. 176-7909
Mfr. Part No.XMLP200PP730
HK$1,402.30
Each
units
0 → 200psi - Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid Analogue 24 V dc 0psi 200psi - 0 → 10 V 3 Pin Male Connector -30°C +85°C ±0.5 (Measurement) %, 0.1 % 2 ms
RS Stock No. 779-4276
Mfr. Part No.PS71-30-4MGS-C-HC
HK$982.70
Each
units
65 → 300psi - Air, Hydraulic SPDT 125/250 V 65psi 300psi BSP 1/4 - Screw Terminals -9°C +85°C - -
RS Stock No. 123-6138
Mfr. Part No.251237
HK$274.71
Each
units
125 → 215bar - Liquid SPST-NC - 125bar 215bar BSP 1/4 - 1/4 x 1/32 Spade Terminal -40°C +121°C ±7.6 bar -
RS Stock No. 176-7888
Mfr. Part No.XMLP100BC11F
HK$1,080.46
Each
units
0 → 100bar - Air, Fresh Water, Gas, Hydraulic Oil, Refrigeration Fluid Analogue 5 V dc 0bar 100bar - 0.5 → 4.5 V EN 175301-803-A 3 Pin Male Connector -30°C +85°C ±0.5 (Measurement) %, 0.1 % 2 ms