Float Switches

Float switches regulate the liquid level in tanks, wells, etc. and are used for automatic level control of groundwater, wastewater and sewage pumps, for raw water and liquid transfer pumps at waterworks, and for high water alarm.


What does a float switch consist of?


Float switches have a reed switch and a pivoted magnet and can be used for normally open (N/O) or normally closed (N/C) operation. The switch action can be reversed rotating the switch through 180°. The movement of float, due to changing fluid level, will cause the reed change to work (for instance close or open) at a specific level. This trusted and tried technology depends on a generally straightforward plan that offers long-haul quality without the requirement for the user to calibrate a switch.


What are material types of a float switch?


  • Nylon – used for oils, diesel, organic chemicals

  • Polypropylene (PP) – acids and alkali, detergents, oils, water, organic chemicals

  • Polyphenylene sulphide (PPS) – used for more aggressive chemicals, and higher temperatures, up to 120ºC

  • Stainless steel – medical and food industries, hydraulic fluids, chemicals

Features and Benefits


  • The highly flexible thermoplastic rubber cable has an extremely high mechanical load rating

  • The drop shape of the stabilizing weight eccentrically mounted in the housing makes the float switch insensitive to turbulence

  • The microswitch, fitted in a dual-chamber system, is completely shock- and rupture-proof

Where can be float switches used?


  • when emptying a tank

  • when filling a tank

  • for alarm at high water level

  • for alarm at low water level

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Omschrijving Prijs Device Type For Use With Mounting Type Switch Output Body Material Cable Length Minimum Operating Temperature Maximum Operating Temperature Maximum AC Voltage Maximum DC Voltage Maximum Current Maximum Pressure Gasket Material Current Rating
RS-stocknr. 395-7072
Fabrikantnummer010-3457
FabrikantGems Sensors
98,00 €
Each
Aantal stuks
Float - Horizontal, Vertical Relay Stainless Steel 1m -40°C +150°C - - - 30bar - -
RS-stocknr. 395-7066
Fabrikantnummer011-1750
FabrikantGems Sensors
95,00 €
Each
Aantal stuks
Float - Horizontal, Vertical Relay Stainless Steel 1m -40°C +150°C - - - 20bar - -
RS-stocknr. 395-9343
Fabrikantnummer011-1950
FabrikantGems Sensors
98,00 €
Each
Aantal stuks
Float - Vertical Relay Stainless Steel 1m -40°C +150°C - - - 30bar - -
RS-stocknr. 395-7151
Fabrikantnummer187580
FabrikantGems Sensors
58,30 €
Each
Aantal stuks
Float - Horizontal, Vertical Direct Load Polysulfone - -17.8°C +80°C - - 40 mA 150psi - -
RS-stocknr. 122-8383
Fabrikantnummer201540
FabrikantGems Sensors
17,35 €
Each
Aantal stuks
Float - Vertical SPST NO/NC Polypropylene 24in -40°C +100°C - - - 15psi - -
RS-stocknr. 395-7088
Fabrikantnummer010-3089
FabrikantGems Sensors
107,00 €
Each
Aantal stuks
Float - Horizontal, Vertical Relay Stainless Steel 1m -40°C +150°C - - - 30bar - -
RS-stocknr. 122-8404
Fabrikantnummer174100
FabrikantGems Sensors
350,20 €
Each
Aantal stuks
Float - Vertical SPST NO PTFE 24in 0°C +100°C - - - 25psi - -
RS-stocknr. 395-7139
Fabrikantnummer169556
FabrikantGems Sensors
58,30 €
Each
Aantal stuks
Float - Horizontal, Vertical Direct Load Polysulfone - -17.8°C +80°C - - 40 mA 150psi - -
RS-stocknr. 122-8401
Fabrikantnummer179445
FabrikantGems Sensors
252,10 €
Each
Aantal stuks
Float - Horizontal SPST NO/NC Stainless Steel 316 24in -40°C +149°C - - - 300psi Viton -
RS-stocknr. 395-7044
Fabrikantnummer011-1700
FabrikantGems Sensors
50,00 €
Each
Aantal stuks
Float - Horizontal, Vertical Relay Brass/NBR 1m -40°C +80°C - - - 10bar - -
RS-stocknr. 122-8405
Fabrikantnummer174200
FabrikantGems Sensors
350,20 €
Each
Aantal stuks
Float - Vertical SPST NC PTFE 24in 0°C +100°C - - - 25psi - -
RS-stocknr. 395-7167
Fabrikantnummer187585
FabrikantGems Sensors
58,30 €
Each
Aantal stuks
Float - Horizontal, Vertical Direct Load Polysulfone - -17.8°C +80°C - - 40 mA 150psi - -
RS-stocknr. 395-7094
Fabrikantnummer010-0391
FabrikantGems Sensors
162,00 €
Each
Aantal stuks
Float - Horizontal, Vertical Relay Stainless Steel 1m -40°C +150°C - - - 30bar - -
RS-stocknr. 395-7050
Fabrikantnummer011-1900
FabrikantGems Sensors
78,00 €
Each
Aantal stuks
Float - Horizontal, Vertical Relay Brass/NBR 1m -40°C +80°C - - - 10bar - -
RS-stocknr. 122-8385
Fabrikantnummer177818
FabrikantGems Sensors
17,35 €
Each
Aantal stuks
Float - Vertical SPST NO/NC Nylon 24in -40°C +121°C - - - 10.3bar - -
RS-stocknr. 122-8391
Fabrikantnummer182600
FabrikantGems Sensors
26,25 €
Each
Aantal stuks
Float - Horizontal SPST NO/NC Versaplast 24in -40°C +121.1°C - - - 6.8bar Buna N -
RS-stocknr. 122-8397
Fabrikantnummer191080
FabrikantGems Sensors
27,00 €
Each
Aantal stuks
Float - Horizontal SPST NC Noryl 26in -40°C +107.2°C - - - 6.8bar Buna N -
RS-stocknr. 122-8423
Fabrikantnummer118126
FabrikantGems Sensors
102,95 €
Each
Aantal stuks
Float - Horizontal SPST NO Stainless Steel 24in -40°C +82 (Water) °C, +149 (Oil) °C 240V - 60 mA dc, 80 mA ac 300psi - -
RS-stocknr. 122-8424
Fabrikantnummer117715
FabrikantGems Sensors
119,00 €
Each
Aantal stuks
Float - Horizontal SPST NO Brass 24in -40°C +149°C 240V - 60 mA dc, 80 mA ac 100psi - -
RS-stocknr. 122-8425
Fabrikantnummer117716
FabrikantGems Sensors
129,80 €
Each
Aantal stuks
Float - Horizontal SPST NO Stainless Steel 316 24in -40°C +149°C 240V - 60 mA dc, 80 mA ac 100psi - -