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. 174-8376
Mfr. Part No.LLF47YFP
BrandCynergy3
MYR220.53
Each
units
Float - Horizontal Internal SPNO Polyvinylidene Fluoride - -10°C +105°C 240V 120V 600 mA - Nitrile 0.6 A
RS Stock No. 174-8388
Mfr. Part No.LLF74Y100RM
BrandCynergy3
MYR120.06
Each
units
Float - Horizontal External SPNO Polypropylene 1m -20°C +100°C 240V 120V 600 mA - Silicone 0.6 A
RS Stock No. 124-2563
Mfr. Part No.RSF47YFP/RS
BrandCynergy3
MYR184.63
Each
units
Float - Horizontal NO/NC Polyvinylidene Fluoride - -10°C +105°C 240V 120V 600 mA - Nitrile -
RS Stock No. 725-9959
Mfr. Part No.LLF53Y100JC004
BrandCynergy3
MYR180.50
Each
units
Float - - NC - - - - - - - - - -
RS Stock No. 177-9140
Mfr. Part No.9037HG37
MYR592.25
Each
units
Float Switch - Screw In 2 NC DPST Polypropylene - -30°C +105°C 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 122-8409
Mfr. Part No.LS-240-3E NO
MYR1,432.80
Each
units
Float - Cable SPST NO Stainless Steel 2m -40°C +80°C - - - 10bar - -
RS Stock No. 431-8406
Mfr. Part No.SSF212X100
BrandCynergy3
MYR423.28
Each
units
Float - Horizontal NO/NC Stainless Steel 1m - +120°C - - 500 mA 5bar - -
RS Stock No. 174-8394
Mfr. Part No.LLF77Y100GV
BrandCynergy3
MYR244.39
Each
units
Float - Horizontal External SPNO Polyvinylidene Fluoride 1m -10°C +105°C 240V 120V 600 mA - Viton 0.6 A
RS Stock No. 756-4176
Mfr. Part No.SSF67A25B200
BrandCynergy3
MYR1,072.12
Each
units
Float - Vertical NO/NC Stainless Steel 1m -20°C +135°C - - 600 mA 10bar Nitrile -
RS Stock No. 869-7589
Mfr. Part No.RSF74YNP
BrandCynergy3
MYR94.65
Each
units
Float - Horizontal NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile -
RS Stock No. 756-4182
Mfr. Part No.SSF67A25B300
BrandCynergy3
MYR798.57
Each
units
Float - Vertical NO/NC Stainless Steel 1m -20°C +135°C - - 600 mA 10bar Nitrile -
RS Stock No. 725-9877
Mfr. Part No.RSF86H050T
BrandCynergy3
MYR132.34
Each
units
Float - Horizontal External NO/NC Polyphenylene Sulfide 1m -10°C +120°C - - 600 mA - - -
RS Stock No. 174-8380
Mfr. Part No.LLF48HFP
BrandCynergy3
MYR133.61
Each
units
Float - Horizontal Internal SPNO Polypropylene - -20°C +100°C 300V 300V 1 A - Nitrile 1 A
RS Stock No. 288-9322
Mfr. Part No.RSF76Y050TV
BrandCynergy3
MYR108.41
Each
units
Float - Horizontal External NO/NC Polyphenylene Sulfide 500mm -10°C +120°C - - 600 mA - Silicone, Viton -
RS Stock No. 122-8412
Mfr. Part No.172625
MYR1,282.32
Each
units
Float - Vertical SPST NO Brass 24in -40°C +148.9°C - - - 500psi - -
RS Stock No. 756-4154
Mfr. Part No.SSV66A24A813E34NP
BrandCynergy3
MYR669.16
Each
units
Float - Vertical NO/NC Stainless Steel 1m - - - - 500 mA 30bar - -
RS Stock No. 725-9912
Mfr. Part No.SSV66A813E34N183
BrandCynergy3
MYR575.58
Each
units
Float - Vertical NO/NC Stainless Steel 1m 0°C +120°C - - 2.5 A 10bar - -
RS Stock No. 122-8407
Mfr. Part No.090-0020
MYR761.90
Each
units
Float - Cable SPST NO Stainless Steel 2m -40°C +80°C - - - 10bar - -
RS Stock No. 122-8401
Mfr. Part No.179445
MYR1,213.26
Each
units
Float - Horizontal SPST NO/NC Stainless Steel 316 24in -40°C +149°C - - - 300psi Viton -
RS Stock No. 124-2557
Mfr. Part No.RSF104Y100JN/RS
BrandCynergy3
MYR93.94
Each
units
Float - Vertical NO/NC Polypropylene 1m -20°C +100°C 240V 120V 600 mA - Nitrile -
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