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. 395-7088
Mfr. Part No.010-3089
SGD175.14
Each
units
Float - Horizontal, Vertical Relay Stainless Steel 1m -40°C +150°C - - - 30bar - -
RS Stock No. 288-9322
Mfr. Part No.RSF76Y050TV
BrandCynergy3
SGD37.12
Each
units
Float - Horizontal External NO/NC Polyphenylene Sulfide 500mm -10°C +120°C - - 600 mA - Silicone, Viton -
RS Stock No. 725-9909
Mfr. Part No.SSF24X100
BrandCynergy3
SGD178.33
Each
units
Float - Vertical NO/NC Stainless Steel 1m -20°C +120°C - - 500 mA 10bar - -
RS Stock No. 869-7548
Mfr. Part No.RSF108Y100JN
BrandCynergy3
SGD29.27
Each
units
Float - Vertical NO/NC Polypropylene 1m -20°C +100°C 240V 120V 600 mA - Nitrile -
RS Stock No. 338-9722
Mfr. Part No.RSF73Y100RN
BrandCynergy3
SGD27.64
Each
units
Float - Horizontal External NO/NC Nylon 1m -20°C +75°C - - 600 mA - Nitrile -
RS Stock No. 756-4144
Mfr. Part No.SSF217XPM12
BrandCynergy3
SGD208.80
Each
units
Float - Horizontal NO/NC Stainless Steel - - +120°C - - 500 mA 5bar - -
RS Stock No. 228-1964
Mfr. Part No.RSF14Y050RF
BrandCynergy3
SGD33.32
Each
units
Float - Direct Mounting Direct Load Polypropylene 500mm -20°C +100°C - - 600 mA - Nitrile -
RS Stock No. 756-4283
Mfr. Part No.SSF211X100H
BrandCynergy3
SGD262.89
Each
units
Float - Horizontal NO/NC Stainless Steel 1m -20°C +180°C - - 500 mA 5bar - -
RS Stock No. 869-7532
Mfr. Part No.RSF104YNP
BrandCynergy3
SGD27.38
Each
units
Float - Vertical NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile -
RS Stock No. 889-1514
Mfr. Part No.LH25-1201
BrandFlowline
SGD66.83
Each
units
Float Level Switch - Vertical NO/NC Polypropylene 600mm -40°C +105°C 120V 120V 10 A 100psi - -
RS Stock No. 122-8405
Mfr. Part No.174200
SGD524.74
Each
units
Float - Vertical SPST NC PTFE 24in 0°C +100°C - - - 25psi - -
RS Stock No. 122-8426
Mfr. Part No.118127
SGD124.07
Each
units
Float - Horizontal SPST NO Brass 24in -40°C +82.2 (Water) °C, +149 (Oil) °C 240V - 60 mA dc, 80 mA ac 300psi - -
RS Stock No. 869-7728
Mfr. Part No.LM10AW
BrandCynergy3
SGD248.13
Each
units
Float - Cable NO Polypropylene 5m 0°C +55°C 250V 110V 10 A 10bar - -
RS Stock No. 395-7145
Mfr. Part No.169555
SGD93.07
Each
units
Float - Horizontal, Vertical Direct Load Polysulfone - -17.8°C +80°C - - 40 mA 150psi - -
RS Stock No. 780-0383
Mfr. Part No.LLS-KIT-V
BrandCynergy3
SGD157.22
1 Kit
Kit(s)
Float - Vertical NO - - - - - - - - - -
RS Stock No. 289-1319
Mfr. Part No.RSF46Y050TG
BrandCynergy3
SGD29.34
Each
units
Float - Horizontal Internal NO/NC Polyphenylene Sulfide 500mm -10°C +120°C - - 600 mA - Viton -
RS Stock No. 338-9700
Mfr. Part No.RSF43Y100RF
BrandCynergy3
SGD41.64
Each
units
Float - Horizontal Internal NO/NC Nylon 1m -20°C +75°C - - 600 mA - Nitrile -
RS Stock No. 869-7595
Mfr. Part No.RSF83YP
BrandCynergy3
SGD21.18
Each
units
Float - Horizontal NO/NC Nylon - -20°C +75°C 240V 120V 600 mA - - -
RS Stock No. 869-7573
Mfr. Part No.RSF46YFP
BrandCynergy3
SGD32.22
Each
units
Float - Horizontal NO/NC Polyphenylene Sulfide - -10°C +120°C 240V 120V 600 mA - Nitrile -
RS Stock No. 756-4135
Mfr. Part No.SSF212XPM12
BrandCynergy3
SGD208.78
Each
units
Float - Horizontal NO/NC Stainless Steel 1m -20°C +120°C - - 500 mA 5bar - -