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. 348-7983
Mfr. Part No.RSF66A25B75
BrandCynergy3
MYR163.25
Each
units
Float - Vertical Direct Load Polyphenylene Sulfide 1m -10°C +85°C - - 600 mA - Nitrile -
RS Stock No. 889-1514
Mfr. Part No.LH25-1201
BrandFlowline
MYR223.72
Each
units
Float Level Switch - Vertical NO/NC Polypropylene 600mm -40°C +105°C 120V 120V 10 A 100psi - -
RS Stock No. 519-258
BrandRS PRO
MYR37.41
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 250V 200V 700 mA - - -
RS Stock No. 725-9864
Mfr. Part No.RSF84H100R
BrandCynergy3
MYR106.25
Each
units
Float - Horizontal External NO/NC Polypropylene 1m -20°C +100°C - - 600 mA - - -
RS Stock No. 756-4299
Mfr. Part No.LITTLE-EX-10M
BrandCynergy3
MYR928.61
Each
units
Float - Horizontal, Vertical NO/NC PE 10m 0°C +55°C - - 21.4 mA 10bar - -
RS Stock No. 339-5244
Mfr. Part No.LFL2-BK-U-PVC5
MYR448.35
Each
units
Float - Horizontal Direct Load Polypropylene 5m -20°C +70°C - - 1 A dc, 3 A ac 2bar - -
RS Stock No. 122-8395
Mfr. Part No.165800
MYR117.12
Each
units
Float - Horizontal SPST NO/NC Polypropylene 24in -40°C +107.2°C - - - 3.4bar HNBR -
RS Stock No. 124-2559
Mfr. Part No.RSF104H100JN/RS
BrandCynergy3
MYR136.41
Each
units
Float - Vertical NO/NC Polypropylene 1m -20°C +100°C 300V 300V 1 A - Nitrile -
RS Stock No. 211-985
Mfr. Part No.RSF64EXS
BrandCynergy3
MYR292.89
Each
units
Float - Vertical Direct Load Polyphenylene Sulfide 1.5m 0°C +75°C - - 600 mA - - -
RS Stock No. 431-8412
Mfr. Part No.SSF213T050
BrandCynergy3
MYR808.13
Each
units
Float - Horizontal NO/NC Stainless Steel 500mm - +120°C - - 100 mA 5bar - -
RS Stock No. 756-4126
Mfr. Part No.SSF212X100-14G
BrandCynergy3
MYR670.39
Each
units
Float - Horizontal NO/NC Stainless Steel 1m - - - - 500 mA 10bar - -
RS Stock No. 395-7072
Mfr. Part No.010-3457
MYR481.10
Each
units
Float - Horizontal, Vertical Relay Stainless Steel 1m -40°C +150°C - - - 30bar - -
RS Stock No. 122-8422
Mfr. Part No.118125
MYR371.00
Each
units
Float - Horizontal SPST NO Brass 24in -40°C +82 (Water) °C, +149 (Oil) °C 240V - 60 mA dc, 80 mA ac 300psi - -
RS Stock No. 780-0236
Mfr. Part No.SSF67A25B300PM12
BrandCynergy3
MYR1,115.93
Each
units
Float - Vertical NO/NC Stainless Steel - -20°C +135°C - - 600 mA 10bar Nitrile -
RS Stock No. 446-2569
Mfr. Part No.RSF66A50A100
BrandCynergy3
MYR221.89
Each
units
Float - Vertical Direct Load Polyphenylene Sulfide 1m -10°C +85°C - - 600 mA - Nitrile -
RS Stock No. 725-9892
Mfr. Part No.RSF56H100R1/8
BrandCynergy3
MYR139.77
Each
units
Float - Vertical NO/NC Polyphenylene Sulfide 1m -10°C +120°C - - 1 A - Nitrile -
RS Stock No. 725-9858
Mfr. Part No.RSF76H100RN
BrandCynergy3
MYR138.58
Each
units
Float - Horizontal External NO/NC Polyphenylene Sulfide 1m -10°C +120°C - - 600 mA - Nitrile -
RS Stock No. 122-8392
Mfr. Part No.131100
MYR589.11
Each
units
Float - Horizontal SPST NO/NC Polypropylene 24in -40°C +107.2°C - - - 6.8bar - -
RS Stock No. 725-9842
Mfr. Part No.RSF73H100RN
BrandCynergy3
MYR115.37
Each
units
Float - Horizontal External NO/NC Nylon 1m -20°C +75°C - - 600 mA - Nitrile -
RS Stock No. 122-8402
Mfr. Part No.74780
MYR356.09
Each
units
Float - Vertical SPST NO CPVC 24in -40°C +82.2°C - - - 15psi - -