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. 122-8402
Mfr. Part No.74780
MYR356.09
Each
units
Float - Vertical SPST NO CPVC 24in -40°C +82.2°C - - - 15psi - -
RS Stock No. 725-9833
Mfr. Part No.RSF43H100RF
BrandCynergy3
MYR110.46
Each
units
Float - Horizontal Internal NO/NC Nylon 1m -20°C +75°C - - 600 mA - Nitrile -
RS Stock No. 350-2076
Mfr. Part No.LFL2-CK-U-PUR5
MYR425.95
Each
units
Float - Horizontal Direct Load Polypropylene 5m -20°C +90°C - - 1 A dc, 3 A ac 3bar - -
RS Stock No. 122-8390
Mfr. Part No.164520
MYR197.81
Each
units
Float - Horizontal SPST NO/NC Polypropylene 24in -40°C +107.2°C - - - 6.8bar Buna N -
RS Stock No. 122-8381
Mfr. Part No.142505
MYR200.37
Each
units
Float - Vertical SPST NO Polypropylene 24in -40°C +107°C - - - 3bar - -
RS Stock No. 869-7592
Mfr. Part No.RSF86YP
BrandCynergy3
MYR87.02
Each
units
Float - Horizontal NO/NC Polyphenylene Sulfide - -10°C +120°C 240V 120V 600 mA - - -
RS Stock No. 756-4273
Mfr. Part No.RSF56Y100J1/8
BrandCynergy3
MYR109.19
Each
units
Float - Vertical NO/NC Polyphenylene Sulfide 1m -20°C +75°C - - 600 mA - Nitrile -
RS Stock No. 869-7586
Mfr. Part No.RSF78YNP
BrandCynergy3
MYR101.48
Each
units
Float - Horizontal NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile -
RS Stock No. 122-8414
Mfr. Part No.144080
MYR1,016.91
Each
units
Float - Vertical SPST NC Aluminium 24in -40°C +148.9°C - - - 600psi - -
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. 395-7044
Mfr. Part No.011-1700
MYR248.20
Each
units
Float - Horizontal, Vertical Relay Brass/NBR 1m -40°C +80°C - - - 10bar - -
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. 122-8382
Mfr. Part No.116826
MYR250.20
Each
units
Float - Vertical SPST NO Polypropylene 24in -40°C +66°C - - - 10bar - -
RS Stock No. 725-9830
Mfr. Part No.RSF46H050TG
BrandCynergy3
MYR145.73
Each
units
Float - Horizontal Internal NO/NC Polyphenylene Sulfide 500mm -10°C +120°C - - 600 mA - Nitrile -
RS Stock No. 780-0181
Mfr. Part No.SSF23X100
BrandCynergy3
MYR433.13
Each
units
Float - Vertical NO Stainless Steel 1m -20°C +120°C - - 500 mA 10bar Nitrile -
RS Stock No. 725-9818
Mfr. Part No.TSF46H100DF
BrandCynergy3
MYR154.94
Each
units
Float - Horizontal NO/NC Polyphenylene Sulfide 1m -10°C +120°C - - 600 mA - Nitrile -
RS Stock No. 124-2569
Mfr. Part No.RSF47HGP/RS
BrandCynergy3
MYR271.27
Each
units
Float - Horizontal NO/NC Polyvinylidene Fluoride - -10°C +105°C 300V 300V 1 A - Viton -
RS Stock No. 725-9943
Mfr. Part No.RSF78Y100RN
BrandCynergy3
MYR95.51
Each
units
Float - Horizontal External NO/NC Polypropylene 1m -20°C +100°C - - 600 mA - Nitrile -
RS Stock No. 756-4245
Mfr. Part No.RSF66A50A100P
BrandCynergy3
MYR266.50
Each
units
Float - Vertical 2NO Polyphenylene Sulfide - -10°C +85°C - - 600 mA - Nitrile -
RS Stock No. 288-9344
Mfr. Part No.RSF56Y050TB
BrandCynergy3
MYR123.22
Each
units
Float - Vertical NO/NC Polyphenylene Sulfide 500mm -20°C +120°C 240V 120V 600 mA - Silicone, Viton 600 mA