RS PRO Pressure Switch, G 1/4 30bar to 300 bar

  • RS Stock No. 297-0018
  • Manufacturer RS PRO
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): IT
Product Details

K Series

From the trusted RS PRO brand, a series of adjustable pressure switches designed for hydraulic and pneumatic applications. Designed to detect a rise or fall in fluid pressure, the durable switches provide an electrical signal once the setpoint pressure is reached. Pre-set pressure is adjusted via a graduated knob which can be locked with a grub screw. Clockwise to increase the pressure and anti-clockwise to decrease the pressure. Mechanical stops protect both the spring and the micro-switch from over pressurisation.

Robustly constructed from anodised aluminium, the RS PRO pressure switches can be mounted in any orientation making them easy to install in a wide range of industrial environments. Connection via a ” BSPF parallel thread.

Features and Benefits

• Anodised aluminium construction
• Can be mounted in any orientation
• 120 Cycles/min switching frequency
• Long mechanical life (10^6 cycles at 70bar)
• 0.5A maximum load (at 250 VAC)
• Accuracy ± 1% of set pressure
• Fixed Hysteresis 15% of full-scale reading
• Wide temperature range -20° to +80°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 Female G (parallel thread)
• Compact and cost-effective


RS PRO Adjustable pressure switches are suitable for a diverse range of industrial applications. Due to their versatility and simple mounting 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




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 30bar
Maximum Operating Pressure 300 bar
Pressure Type Positive Pressure
Suitable Media Oil
Connection G 1/4
Type Adjustable
Voltage Rating 250V ac/dc
Connection Thread Size 1/4 in
Manufacturer Series K5
Contact Operation Normally Closed, Normally Open
Connection Thread Standard G
Minimum Operating Temperature -20°C
Maximum Operating Temperature +80°C
IP Rating IP65
Minimum Pressure Setting 0bar
Pressure Setting Range 0 → 500bar
LED Indicator No
Maximum Pressure Setting 500bar
Output Type NO/NC
5 In stock for delivery within 2 working days
Unit of sale: Each
(exc. VAT)
(inc. VAT)
Per unit
1 - 4
5 +
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