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. 519-232
BrandRS PRO
MYR35.29
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 250V 200V 700 mA - - -
RS Stock No. 519-236
BrandRS PRO
MYR31.40
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 140V 200V 700 mA - - -
RS Stock No. 519-248
BrandRS PRO
MYR28.54
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 130V 180V 700 mA - - -
RS Stock No. 519-242
BrandRS PRO
MYR23.57
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 140V 200V 1 A - - -
RS Stock No. 235-6204
BrandRS PRO
MYR414.81
Each
units
Float - Horizontal Direct Load Stainless Steel 300mm -10°C +120°C 300V 300V 500 mA 10bar - -
RS Stock No. 519-258
BrandRS PRO
MYR36.07
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 250V 200V 700 mA - - -
RS Stock No. 191-9518
BrandRS PRO
MYR761.55
Each
units
Float - Internal NO/NC Stainless Steel 1m - +135°C 250V 120V 600 mA 10bar - 600 mA
RS Stock No. 174-8426
BrandRS PRO
MYR59.36
Each
units
Float - Horizontal External SPNO Nylon - -20°C +75°C 240V 120V 600 mA - - 0.6 A
RS Stock No. 312-7164
BrandRS PRO
MYR391.96
Each
units
Float - Vertical Direct Load Stainless Steel 300mm -10°C +120°C 300V 300V 500 mA 10bar - -
RS Stock No. 191-9503
BrandRS PRO
MYR75.25
Each
units
Float - Horizontal NO/NC Polyphenylene Sulphide - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 174-8413
BrandRS PRO
MYR67.36
Each
units
Float - Vertical Internal NO/NC Nylon 1m -20°C +75°C 240V 120V 600 mA - Nitrile 0.6 A
RS Stock No. 191-9506
BrandRS PRO
MYR173.86
Each
units
Float - Internal - Polyphenylene Sulphide - -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9488
BrandRS PRO
MYR80.41
Each
units
Float - External NO/NC Polyphenylene Sulphide - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 174-8425
BrandRS PRO
MYR71.73
Each
units
Float - Horizontal External SPNO Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile 0.6 A
RS Stock No. 174-8424
BrandRS PRO
MYR69.26
Each
units
Float - Horizontal External SPNO Nylon - -20°C +75°C 240V 120V 600 mA - Nitrile 0.6 A
RS Stock No. 191-9475
BrandRS PRO
MYR100.67
Each
units
Float - Internal NO/NC Polypropylene 1m -20°C +100°C 240V 120V 600 mA - - 600 mA
RS Stock No. 191-9497
BrandRS PRO
MYR77.07
Each
units
Float - External, Vertical NO/NC Polypropylene 1m -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9504
BrandRS PRO
MYR178.80
Each
units
Float - Internal - Polyphenylene Sulphide 1m -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9511
BrandRS PRO
MYR79.24
Each
units
Float - Horizontal NO/NC Polyphenylene Sulphide - -10°C +120°C 240V 120V 600 mA - - 600 mA
RS Stock No. 191-9481
BrandRS PRO
MYR87.65
Each
units
Float - Threaded NO/NC Polyphenylene Sulphide - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA