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. 339-730
Mfr. Part No.RSF43Y050QF
BrandCynergy3
SGD21.40
Each
units
Float - Horizontal Internal NO/NC Nylon 500mm -20°C +75°C - - 600 mA - Nitrile -
RS Stock No. 845-960
Mfr. Part No.RSF54Y100JC
BrandCynergy3
SGD30.17
Each
units
Float - Vertical NO/NC Polypropylene 1m -20°C +100°C - - 600 mA - Nitrile -
RS Stock No. 454-9105
Mfr. Part No.SSF212XPL
BrandCynergy3
SGD222.13
Each
units
Float - Horizontal NO/NC Stainless Steel - - +120°C - - 500 mA 5bar - -
RS Stock No. 845-976
Mfr. Part No.RSF44Y050QF
BrandCynergy3
SGD26.70
Each
units
Float - Horizontal Internal NO/NC Polypropylene 500mm -20°C +100°C - - 600 mA - Nitrile -
RS Stock No. 312-7164
BrandRS PRO
SGD142.18
Each
units
Float - Vertical Direct Load Stainless Steel 300mm -10°C +120°C 300V 300V 500 mA 10bar - -
RS Stock No. 331-017
Mfr. Part No.RSF53Y100JC
BrandCynergy3
SGD32.06
Each
units
Float - Vertical NO/NC Nylon 1m -20°C +75°C - - 600 mA - Nitrile -
RS Stock No. 205-6910
Mfr. Part No.MS10A
BrandCynergy3
SGD55.87
Each
units
Float - - NO PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
RS Stock No. 211-985
Mfr. Part No.RSF64EXS
BrandCynergy3
SGD89.31
Each
units
Float - Vertical Direct Load Polyphenylene Sulfide 1.5m 0°C +75°C - - 600 mA - - -
RS Stock No. 859-3333
Mfr. Part No.FSH-21
SGD68.83
Each
units
Float Switch - Horizontal SPST Polypropylene - -20°C +80°C - - 0.5 (Switching) A, 1 (Carrying) A 57psi - -
RS Stock No. 446-2597
Mfr. Part No.RSF66B50B150
BrandCynergy3
SGD83.72
Each
units
Float - Vertical Direct Load Polyphenylene Sulfide 1m -10°C +85°C - - 600 mA - Nitrile -
RS Stock No. 762-1036
BrandRS PRO
SGD61.90
Each
units
Float - Vertical NO/NC Stainless Steel 300mm -40°C +125°C 250V 200V 2 A - - -
RS Stock No. 317-932
Mfr. Part No.RSF73Y050QM
BrandCynergy3
SGD27.96
Each
units
Float - Horizontal External Direct Load Nylon 500mm -20°C +75°C - - 600 mA - Silicone -
RS Stock No. 339-5244
Mfr. Part No.LFL2-BK-U-PVC5
SGD126.00
Each
units
Float - Horizontal Direct Load Polypropylene 5m -20°C +70°C - - 1 A dc, 3 A ac 2bar - -
RS Stock No. 338-9788
Mfr. Part No.RSF56Y100RB
BrandCynergy3
SGD33.27
Each
units
Float - Vertical NO/NC Polyphenylene Sulfide 1m -10°C +100°C - - 600 mA - Silicone, Viton -
RS Stock No. 519-236
BrandRS PRO
SGD10.26
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 140V 200V 700 mA - - -
RS Stock No. 869-7609
Mfr. Part No.MS20C
BrandCynergy3
SGD82.45
Each
units
Float - Cable NO/NC Polypropylene 5m 0°C +55°C 250V 110V 20 A 10bar - -
RS Stock No. 339-5238
Mfr. Part No.LFL2-CK-U-PVC5
SGD112.00
Each
units
Float - Horizontal Direct Load Polypropylene 5m +5°C +70°C - - 1 A dc, 3 A ac 3bar - -
RS Stock No. 397-0570
Mfr. Part No.RSF86Y100R
BrandCynergy3
SGD31.05
Each
units
Float - Horizontal NO/NC Polyphenylene Sulfide 1m -10°C +120°C - - 600 mA - Viton -
RS Stock No. 756-4201
Mfr. Part No.SSF67B50B100
BrandCynergy3
SGD350.89
Each
units
Float - Vertical NO/NC Stainless Steel 1m -20°C +135°C - - 600 mA 10bar Nitrile -
RS Stock No. 889-1267
Mfr. Part No.LV20-1201
BrandFlowline
SGD54.77
Each
units
Float Level Switch - Vertical NO/NC Polypropylene 600mm -40°C +80°C 120V 120V 10 A 10psi - -