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

...
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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. 191-9467
BrandRS PRO
kr 190,51
Each
Units
Float - External, Vertical NO/NC Polyphenylene Sulphide 1m -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 174-8429
BrandRS PRO
kr 761,82
Each
Units
Float - Horizontal External SPNO Stainless Steel 1m - +120°C 300V 300V 500 mA - - 0.5 A
RS Stock No. 191-9500
BrandRS PRO
kr 155,52
Each
Units
Float - Vertical NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 174-8427
BrandRS PRO
kr 136,42
Each
Units
Float - Horizontal External SPNO Polypropylene - -20°C +100°C 240V 120V 600 mA - - 0.6 A
RS Stock No. 191-9490
BrandRS PRO
kr 1 145,15
Each
Units
Float - External NO High Density Polyethylene 5m 0°C +55°C 250V 110V 10 A 10bar - 10 A
RS Stock No. 174-8421
BrandRS PRO
kr 125,47
Each
Units
Float - Horizontal External SPNO Nylon 1m -20°C +75°C 240V 120V 600 mA - - 0.6 A
RS Stock No. 191-9478
BrandRS PRO
kr 181,05
Each
Units
Float - Threaded NO/NC Polyphenylene Sulphide 1m -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9498
BrandRS PRO
kr 158,89
Each
Units
Float - External, Vertical NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 519-242
BrandRS PRO
kr 57,50
Each
Units
Float - Vertical Direct Load PP 300mm -20°C +80°C 140V 200V 1 A - - -
RS Stock No. 191-9492
BrandRS PRO
kr 296,65
Each
Units
Float - External NO HDPE 5m 0°C +45°C 250V 24V 10 A 10bar - 10 A
New
RS Stock No. 191-9483
BrandRS PRO
kr 160,44
Each
Units
Float - External NO/NC Nylon 1m -20°C +75°C 240V 120V 600 mA - Silicone 600 mA
RS Stock No. 174-8423
BrandRS PRO
kr 150,98
Each
Units
Float - Horizontal Internal SPNO Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile 0.6 A
RS Stock No. 191-9475
BrandRS PRO
kr 222,26
Each
Units
Float - Internal NO/NC Polypropylene 1m -20°C +100°C 240V 120V 600 mA - - 600 mA
RS Stock No. 191-9514
BrandRS PRO
kr 1 681,43
Each
Units
Float - Internal NO/NC Stainless Steel 1m - +135°C 250V 120V 600 mA 10bar - 600 mA
RS Stock No. 191-9476
BrandRS PRO
kr 151,37
Each
Units
Float - Threaded NO/NC Nylon 1m -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9510
BrandRS PRO
kr 169,65
Each
Units
Float - Horizontal NO/NC Polyphenylene Sulphide 1m -10°C +120°C 240V 120V 600 mA - - 600 mA
New
RS Stock No. 191-9480
BrandRS PRO
kr 148,91
Each
Units
Float - Threaded NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9503
BrandRS PRO
kr 166,15
Each
Units
Float - Horizontal NO/NC Polyphenylene Sulphide - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9465
BrandRS PRO
kr 404,35
Each
Units
Float - Vertical NO/NC Buna (Float), Polyphenylene Sulphide (Stem) 1m -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9515
BrandRS PRO
kr 1 681,43
Each
Units
Float - Internal NO/NC Stainless Steel 1m - +135°C 250V 120V 600 mA 10bar - 600 mA