Float Switches

A float switch is a level sensor used to detect the level of liquid usually in a tank, container or well. The flotation part of the device sits on top of the liquid and will switch on the rise and fall of the liquid. Float switches 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.RS Components offer a wide range of high-quality horizontal and vertical devices from leading brands including Cynergy3, Pepperl + Fuchs, Gems Sensors, Telemecanique and of course RS PRO

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 the 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-proofAvailable with WRAS approvals.

What applications can be float switches used?

When emptying a tankWhen filling a tankFor alarm at high water levelFor alarm at low water level


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Description Price 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 Stock No. 725-9921
Mfr. Part No.SSH66XE34N100
BrandCynergy3
SGD252.83
Each
units
Float - Horizontal NO/NC Stainless Steel 1m 0°C +120°C - - 500 mA 10bar - -
RS Stock No. 725-9846
Mfr. Part No.RSF74H100RN
BrandCynergy3
SGD35.31
Each
units
Float - Horizontal External NO/NC Polypropylene 1m -20°C +100°C - - 600 mA - Nitrile -
RS Stock No. 869-7615
Mfr. Part No.SSF67B25B75
BrandCynergy3
SGD346.45
Each
units
Float - Vertical NO/NC Stainless Steel 1m -20°C +120°C 250V 120V 600 mA 10bar Nitrile -
RS Stock No. 174-8397
Mfr. Part No.LLF78Y100RN
BrandCynergy3
SGD34.49
Each
units
Float - Horizontal External SPNO Polypropylene 1m -20°C +100°C 240V 120V 600 mA - Nitrile 0.6 A
RS Stock No. 756-4233
Mfr. Part No.RSF66A25B150P
BrandCynergy3
SGD68.48
Each
units
Float - Vertical NO/NC Polyphenylene Sulfide - -10°C +85°C - - 600 mA - Nitrile -
RS Stock No. 144-9337
Mfr. Part No.5828803
BrandXylem
SGD241.85
Each
units
Float Switch - Cable - Polypropylene 13m 0°C +60°C - - - - - -
RS Stock No. 191-9506
BrandRS PRO
SGD62.05
Each
units
Float - Internal - Polyphenylene Sulphide - -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 338-9772
Mfr. Part No.RSF54Y100RC
BrandCynergy3
SGD28.92
Each
units
Float - Vertical NO/NC Polypropylene 1m -20°C +100°C - - 600 mA - Nitrile -
RS Stock No. 122-8389
Mfr. Part No.165570
SGD62.71
Each
units
Float - Horizontal SPST NO/NC Nylon 24in -40°C +121.1°C - - - 6.8bar Buna N -
RS Stock No. 122-8414
Mfr. Part No.144080
SGD294.91
Each
units
Float - Vertical SPST NC Aluminium 24in -40°C +148.9°C - - - 600psi - -
RS Stock No. 869-7602
Mfr. Part No.RSF88YP
BrandCynergy3
SGD25.44
Each
units
Float - Horizontal NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - - -
RS Stock No. 124-2554
Mfr. Part No.TSSF212H100/RS
BrandCynergy3
SGD183.28
Each
units
Float - Horizontal NO/NC Stainless Steel 304 (Stem), Stainless Steel 316 (Float) 1m -20°C +120°C 300V 300V 1 A 10bar - -
RS Stock No. 191-9473
BrandRS PRO
SGD30.00
Each
units
Float - Horizontal NO/NC Polyphenylene Sulphide 1m -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 205-1289
Mfr. Part No.118329
BrandWIKA
SGD67.00
Each
units
Float - Panel Mount - Plastic 300mm - - - - - - - -