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. 312-7164
BrandRS PRO
SGD135.41
Each
units
Float - Vertical Direct Load Stainless Steel 300mm -10°C +120°C 300V 300V 500 mA 10bar - -
RS Stock No. 762-1036
BrandRS PRO
SGD58.95
Each
units
Float - Vertical NO/NC Stainless Steel 300mm -40°C +125°C 250V 200V 2 A - - -
RS Stock No. 519-236
BrandRS PRO
SGD9.30
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 140V 200V 700 mA - - -
RS Stock No. 519-258
BrandRS PRO
SGD10.68
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 250V 200V 700 mA - - -
RS Stock No. 519-242
BrandRS PRO
SGD7.19
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 140V 200V 1 A - - -
RS Stock No. 519-232
BrandRS PRO
SGD10.45
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 250V 200V 700 mA - - -
RS Stock No. 762-1039
BrandRS PRO
SGD68.04
Each
units
Float - Horizontal NO Stainless Steel 300mm -40°C +125°C 250V 200V 500 mA 10bar Silicone -
RS Stock No. 235-6204
BrandRS PRO
SGD122.87
Each
units
Float - Horizontal Direct Load Stainless Steel 300mm -10°C +120°C 300V 300V 500 mA 10bar - -
RS Stock No. 191-9482
BrandRS PRO
SGD25.53
Each
units
Float - External NO/NC Nylon 1m -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9495
BrandRS PRO
SGD22.28
Each
units
Float - External, Vertical NO/NC Nylon 1m -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 174-8424
BrandRS PRO
SGD20.81
Each
units
Float - Horizontal External SPNO Nylon - -20°C +75°C 240V 120V 600 mA - Nitrile 0.6 A
RS Stock No. 174-8427
BrandRS PRO
SGD18.98
Each
units
Float - Horizontal External SPNO Polypropylene - -20°C +100°C 240V 120V 600 mA - - 0.6 A
RS Stock No. 191-9505
BrandRS PRO
SGD54.94
Each
units
Float - Internal - Polyphenylene Sulphide 1m -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 174-8429
BrandRS PRO
SGD129.81
Each
units
Float - Horizontal External SPNO Stainless Steel 1m - +120°C 300V 300V 500 mA - - 0.5 A
RS Stock No. 191-9512
BrandRS PRO
SGD151.59
Each
units
Float - External, Horizontal NO/NC 304 Stainless Steel (Stem), 316 Stainless Steel (Float) - - +120°C 300V 300V 500 mA 5bar - 500 mA
RS Stock No. 188-0316
BrandRS PRO
SGD494.16
Each
units
Float - Flange Mount SPDT Aluminium (Enclosure), SS 316L (Float) - 0°C +130°C 250V 30V 3 (Inductive Load) A, 4 (Resistive Load) A 15 bar @ 130 °C, 19 bar @ 20 °C Nitrile 3 (Inductive Load) A, 4 (Resistive Load) A
RS Stock No. 191-9487
BrandRS PRO
SGD21.56
Each
units
Float - External NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9507
BrandRS PRO
SGD54.94
Each
units
Float - Internal - Polyphenylene Sulphide 1m -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9500
BrandRS PRO
SGD21.65
Each
units
Float - Vertical NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 174-8412
BrandRS PRO
SGD19.94
Each
units
Float - Horizontal Internal SPNO Polypropylene 1m -20°C +100°C 240V 120V 600 mA - Nitrile 0.6 A