RS PRO Pressure Switch, G 1/4 0.2bar to 2.5 bar

  • RS Stock No. 297-0046
  • Manufacturer RS PRO
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): IT
Product Details

F4 Series

From the trusted RS PRO brand, a series of double contact adjustable pressure switches designed for hydraulic and pneumatic applications. Designed to detect a rise or fall in fluid pressure, the robust switches provide an electrical signal once the setpoint pressure is reached. Pre-set pressure is adjusted by rotating a screw which is located in the centre of the switch head. Clockwise to increase the pressure and anti-clockwise to decrease the pressure.

Robustly constructed from steel, the RS PRO pressure switches can be mounted in any orientation making them easy to install in a wide range of industrial environments. Compact in design the switches are ideal for designs requiring a small footprint. Connection via a “BSP parallel Male thread. Electrical connection DIN 43650 IP65 plug.

Features & Benefits

• Robust steel construction
• Can be mounted in any orientation
• 90 Cycles/min switching frequency
• Long mechanical life (10^6 cycles at 70bar)
• 0.5A maximum load (at 250 VAC)
• Accuracy 4% of set pressure
• Wide temperature range -25° to +85°C
• Mechanical stops to protect the spring and Micro-switch from over pressurisation
• Wide adjustment range
• N/C or N/O contacts SPDT
• Electrical connectors DIN 43650 plug to IP65
• ” BSP Male G (parallel thread)


RS PRO Adjustable pressure switches are suitable for a diverse range of industrial applications. Due to their versatility and simple design, the switches can be used in both pneumatic and hydraulic systems. Some of the more common are

• Pumps
• Compressed air systems
• Machine tools
• Process control equipment
• Sensors
• Hydraulics and Pneumatics
• Valves and switches


297-0052 does not include a mechanical stop and requires a 2mm allen key in order to adjust



The adjustment on these pressure switches is done by a 2mm Allen Key. The hex socket adjusting screw is hidden down the hole where the screw fits to fasten the electrical block switch. So you need to undo and remove the screw then drop the 2mm Hex key down the recess to adjust.



Pressure Switches

Pressure switches that allow microswitch operation once a pre-set pressure is reached. K and K3 Series incorporate a mechanical stop providing over-pressure protection for the spring and microswitch. Electrical connections for all models to DIN 43650.

Attribute Value
Minimum Operating Pressure 0.2bar
Maximum Operating Pressure 2.5 bar
Pressure Type Positive Pressure
Connection G 1/4
Type Adjustable
Voltage Rating 250V ac
Connection Thread Size 1/4 in
Manufacturer Series F4
Contact Operation Normally Closed, Normally Open
Connection Thread Standard G
Minimum Operating Temperature -25°C
Maximum Operating Temperature +85°C
IP Rating IP65
Output Type NO/NC
LED Indicator No
Minimum Pressure Setting 0bar
3 Within 1 working day(s) (IE stock)
48 Within 2 working day(s) (EU stock)
Unit of sale: Each
(exc. VAT)
(inc. VAT)
Per unit
1 - 4
5 +
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