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. 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
MYR30.50
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 140V 200V 700 mA - - -
RS Stock No. 519-248
BrandRS PRO
MYR32.43
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
MYR402.95
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
MYR35.04
Each
units
Float - Vertical Direct Load PP 300mm -20°C +80°C 250V 200V 700 mA - - -
RS Stock No. 191-9491
BrandRS PRO
MYR589.39
Each
units
Float - External NC High Density Polyethylene 5m 0°C +55°C 250V 110V 10 A 10bar - 10 A
RS Stock No. 191-9497
BrandRS PRO
MYR87.58
Each
units
Float - External, Vertical NO/NC Polypropylene 1m -20°C +100°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9516
BrandRS PRO
MYR915.90
Each
units
Float - Internal NO/NC Stainless Steel 1m - +135°C 250V 120V 600 mA 10bar - 600 mA
RS Stock No. 174-8422
BrandRS PRO
MYR73.10
Each
units
Float - Horizontal Internal SPNO Nylon - -20°C +75°C 240V 120V 600 mA - Nitrile 0.6 A
RS Stock No. 191-9503
BrandRS PRO
MYR85.51
Each
units
Float - Horizontal NO/NC Polyphenylene Sulphide - -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9492
BrandRS PRO
MYR152.68
Each
units
Float - External NO HDPE 5m 0°C +45°C 250V 24V 10 A 10bar - 10 A
RS Stock No. 191-9473
BrandRS PRO
MYR95.52
Each
units
Float - Horizontal NO/NC Polyphenylene Sulphide 1m -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9518
BrandRS PRO
MYR865.40
Each
units
Float - Internal NO/NC Stainless Steel 1m - +135°C 250V 120V 600 mA 10bar - 600 mA
RS Stock No. 191-9493
BrandRS PRO
MYR152.68
Each
units
Float - External NC HDPE 5m 0°C +45°C 250V 24V 10 A 10bar - 10 A
RS Stock No. 191-9495
BrandRS PRO
MYR82.38
Each
units
Float - External, Vertical NO/NC Nylon 1m -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 174-8412
BrandRS PRO
MYR73.72
Each
units
Float - Horizontal Internal SPNO Polypropylene 1m -20°C +100°C 240V 120V 600 mA - Nitrile 0.6 A
RS Stock No. 191-9479
BrandRS PRO
MYR72.17
Each
units
Float - Threaded NO/NC Nylon - -20°C +75°C 240V 120V 600 mA - Nitrile 600 mA
RS Stock No. 191-9512
BrandRS PRO
MYR560.64
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. 191-9467
BrandRS PRO
MYR98.05
Each
units
Float - External, Vertical NO/NC Polyphenylene Sulphide 1m -10°C +120°C 240V 120V 600 mA - Nitrile 600 mA