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. 725-9892
Mfr. Part No.RSF56H100R1/8
BrandCynergy3
SGD41.76
Each
units
Float - Vertical NO/NC Polyphenylene Sulfide 1m -10°C +120°C - - 1 A - Nitrile -
RS Stock No. 338-9801
Mfr. Part No.MS20A
BrandCynergy3
SGD68.38
Each
units
Float - - Direct Load PE 5m 0°C +55°C - - 2 A dc, 8 A ac 10bar - -
RS Stock No. 756-4258
Mfr. Part No.RSF66B50B100P
BrandCynergy3
SGD77.29
Each
units
Float - Vertical 2NC Polyphenylene Sulfide - -10°C +85°C - - 600 mA - Nitrile -
RS Stock No. 756-4249
Mfr. Part No.RSF66A50A150P
BrandCynergy3
SGD77.29
Each
units
Float - Vertical 2NO Polyphenylene Sulfide - -10°C +85°C - - 600 mA - Nitrile -
RS Stock No. 350-2060
Mfr. Part No.LFL2-CK-U-PUR5
SGD112.00
Each
units
Float - Horizontal Direct Load Polypropylene 5m +5°C +70°C - - 1 A dc, 3 A ac 3bar - -
RS Stock No. 124-2571
Mfr. Part No.RSF57H100G1/8/RS
BrandCynergy3
SGD79.04
Each
units
Float - Vertical NO/NC Polyvinylidene Fluoride 1m -10°C +105°C 300V 300V 1 A - - -
RS Stock No. 228-1992
Mfr. Part No.RSF34W100RF
BrandCynergy3
SGD38.28
Each
units
Float - Horizontal NO/NC Polypropylene 1m -20°C +100°C - - 5 A - 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 - -
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. 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. 869-7564
Mfr. Part No.RSF44YFP
BrandCynergy3
SGD28.13
Each
units
Float - Horizontal NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile -
RS Stock No. 122-8391
Mfr. Part No.182600
SGD104.05
Each
units
Float - Horizontal SPST NO/NC Versaplast 24in -40°C +121.1°C - - - 6.8bar Buna N -
RS Stock No. 122-8390
Mfr. Part No.164520
SGD64.06
Each
units
Float - Horizontal SPST NO/NC Polypropylene 24in -40°C +107.2°C - - - 6.8bar Buna N -
RS Stock No. 492-8924
Mfr. Part No.SSF67A25B125
BrandCynergy3
SGD328.94
Each
units
Float - Vertical Direct Load Stainless Steel - -20°C +135°C - - 600 mA 10bar Nitrile -
RS Stock No. 395-9343
Mfr. Part No.011-1950
SGD143.35
Each
units
Float - Vertical Relay Stainless Steel 1m -40°C +150°C - - - 30bar - -
RS Stock No. 379-4017
Mfr. Part No.MS10BW
BrandCynergy3
SGD91.10
Each
units
Float - - Direct Load PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
RS Stock No. 869-7586
Mfr. Part No.RSF78YNP
BrandCynergy3
SGD29.43
Each
units
Float - Horizontal NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile -
RS Stock No. 361-1833
Mfr. Part No.FFSMC10C
BrandCynergy3
SGD240.94
Each
units
Float - - Direct Load PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
RS Stock No. 122-8396
Mfr. Part No.165900
SGD33.97
Each
units
Float - Horizontal SPST NO/NC Nylon 24in -40°C +121.1°C - - - 3.4bar HNBR -
RS Stock No. 492-8918
Mfr. Part No.SSF67A25B100
BrandCynergy3
SGD328.94
Each
units
Float - Vertical Direct Load Stainless Steel - -20°C +135°C - - 600 mA 10bar Nitrile -