Float Switches

Float switches regulate the liquid level in tanks, wells, etc. and 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.


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 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-proof

Where can be float switches used?


  • when emptying a tank

  • when filling a tank

  • for alarm at high water level

  • for alarm at low water level

...
Read more Read less

Filters

Viewing 1 - 20 of 484 products
Results per page
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
SGD114.39
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
SGD58.08
Each
units
Float - Vertical NO/NC Stainless Steel 300mm -40°C +125°C 250V 200V 2 A - - -
RS Stock No. 519-236
BrandRS PRO
SGD9.16
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 140V 200V 700 mA - - -
RS Stock No. 519-258
BrandRS PRO
SGD10.53
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 250V 200V 700 mA - - -
RS Stock No. 519-242
BrandRS PRO
SGD8.21
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 140V 200V 1 A - - -
RS Stock No. 519-232
BrandRS PRO
SGD10.30
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 250V 200V 700 mA - - -
RS Stock No. 762-1039
BrandRS PRO
SGD67.04
Each
units
Float - Horizontal NO/NC Stainless Steel 300mm -40°C +125°C 250V 200V 500 mA 10bar Silicone -
RS Stock No. 235-6204
BrandRS PRO
SGD121.05
Each
units
Float - Horizontal Direct Load Stainless Steel 300mm -10°C +120°C 300V 300V 500 mA 10bar - -
RS Stock No. 519-248
BrandRS PRO
SGD9.74
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 130V 180V 700 mA - - -
RS Stock No. 191-9491
BrandRS PRO
SGD177.06
Each
units
Float - External NC High Density Polyethylene 5m 0°C +55°C 250V 110V 10 A 10bar - 10 A
RS Stock No. 191-9469
BrandRS PRO
SGD27.37
Each
units
Float - Horizontal NO/NC Polyphenylene Sulphide 1m -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9482
BrandRS PRO
SGD24.41
Each
units
Float - External NO/NC Nylon 1m -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9483
BrandRS PRO
SGD24.81
Each
units
Float - External NO/NC Nylon 1m -20°C +75°C 240V 120V 600 mA - Silicone 600 mA
New
RS Stock No. 191-9504
BrandRS PRO
SGD61.04
Each
units
Float - Internal - Polyphenylene Sulphide 1m -10°C +85°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9481
BrandRS PRO
SGD26.33
Each
units
Float - Threaded NO/NC Polyphenylene Sulphide - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 174-8428
BrandRS PRO
SGD144.68
Each
units
Float - Horizontal Internal SPNO Stainless Steel 1m - +120°C 300V 300V 500 mA - - 0.5 A
RS Stock No. 191-9471
BrandRS PRO
SGD28.90
Each
units
Float - Vertical NO/NC Polyphenylene Sulphide 1m -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9473
BrandRS PRO
SGD28.70
Each
units
Float - Horizontal NO/NC Polyphenylene Sulphide 1m -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9500
BrandRS PRO
SGD24.05
Each
units
Float - Vertical NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
New
RS Stock No. 191-9487
BrandRS PRO
SGD23.95
Each
units
Float - External NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
Related Products
The PLS series of float switches includes one ...
Description:
The PLS series of float switches includes one of the smallest float switches available in the market at 29.5mm in length. Typical applications include water dispensers, tank monitoring systems, drinks vending machines, coffee makers and printing machines. Top or bottom ...
A stainless steel vertical float switch fitted with ...
Description:
A stainless steel vertical float switch fitted with an acrylic guard to help prevent against accidental operation caused by turbulent fluids. The float switch can be bought with an extra test facility allowing the float to be manually lifted to ...
The RS PRO pedestal mount float switch has ...
Description:
The RS PRO pedestal mount float switch has 2 NC DPST-Db contacts. It is used for an open tank or sump. The float switch has a vertical operating position. • Made of polypropylene• Maximum AC voltage is 230V (Single Phase), ...
The RS PRO screw-in mount float switch has ...
Description:
The RS PRO screw-in mount float switch has 2 NC DPST-DP contacts. It is used for a close tank or sump. The float switch has a vertical operating position. • Made of polypropylene• Maximum AC voltage is 230V (Single Phase), ...