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. 756-4299
Mfr. Part No.LITTLE-EX-10M
BrandCynergy3
MYR767.11
Each
units
Float - Horizontal, Vertical NO/NC PE 10m 0°C +55°C - - 21.4 mA 10bar - -
RS Stock No. 756-4295
Mfr. Part No.LITTLE-EX-5M
BrandCynergy3
MYR575.42
Each
units
Float - Horizontal, Vertical NO/NC PE 5m 0°C +55°C - - 21.4 mA 10bar - -
RS Stock No. 350-2098
Mfr. Part No.LFL2-BK-U-CSM5
MYR430.91
Each
units
Float - Horizontal Direct Load Polypropylene 5m -20°C +90°C - - 1 A dc, 3 A ac 2bar - -
RS Stock No. 780-0383
Mfr. Part No.LLS-KIT-V
BrandCynergy3
MYR521.02
1 Kit
Kit(s)
Float - Vertical NO - - - - - - - - - -
RS Stock No. 725-9864
Mfr. Part No.RSF84H100R
BrandCynergy3
MYR102.12
Each
units
Float - Horizontal External NO/NC Polypropylene 1m -20°C +100°C - - 600 mA - - -
RS Stock No. 205-6910
Mfr. Part No.MS10A
BrandCynergy3
MYR160.17
Each
units
Float - - NO PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
RS Stock No. 348-7983
Mfr. Part No.RSF66A25B75
BrandCynergy3
MYR191.44
Each
units
Float - Vertical Direct Load Polyphenylene Sulfide 1m -10°C +85°C - - 600 mA - Nitrile -
RS Stock No. 889-1514
Mfr. Part No.LH25-1201
BrandFlowline
MYR215.01
Each
units
Float Level Switch - Vertical NO/NC Polypropylene 600mm -40°C +105°C 120V 120V 10 A 100psi - -
RS Stock No. 431-8399
Mfr. Part No.SSF211X100
BrandCynergy3
MYR461.17
Each
units
Float - Horizontal NO/NC Stainless Steel 1m - +120°C - - 500 mA 5bar - -
RS Stock No. 338-9788
Mfr. Part No.RSF56Y100RB
BrandCynergy3
MYR110.28
Each
units
Float - Vertical NO/NC Polyphenylene Sulfide 1m -10°C +100°C - - 600 mA - Silicone, Viton -
RS Stock No. 211-985
Mfr. Part No.RSF64EXS
BrandCynergy3
MYR295.97
Each
units
Float - Vertical Direct Load Polyphenylene Sulfide 1.5m 0°C +75°C - - 600 mA - - -
RS Stock No. 454-9082
Mfr. Part No.LM10C
BrandCynergy3
MYR693.98
Each
units
Float - - Direct Load PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
RS Stock No. 780-0236
Mfr. Part No.SSF67A25B300PM12
BrandCynergy3
MYR1,072.52
Each
units
Float - Vertical NO/NC Stainless Steel - -20°C +135°C - - 600 mA 10bar Nitrile -
RS Stock No. 288-9338
Mfr. Part No.RSF16Y050TG
BrandCynergy3
MYR134.41
Each
units
Float - Direct Mounting NO/NC Polyphenylene Sulfide 500mm -20°C +120°C - - 600 mA - Silicone, Viton -
RS Stock No. 122-8426
Mfr. Part No.118127
MYR404.44
Each
units
Float - Horizontal SPST NO Brass 24in -40°C +149 (Oil) °C, +82.2 (Water) °C 240V - 60 mA dc, 80 mA ac 300psi - -
RS Stock No. 122-8391
Mfr. Part No.182600
MYR344.83
Each
units
Float - Horizontal SPST NO/NC Versaplast 24in -40°C +121.1°C - - - 6.8bar Buna N -
RS Stock No. 446-2569
Mfr. Part No.RSF66A50A100
BrandCynergy3
MYR242.25
Each
units
Float - Vertical Direct Load Polyphenylene Sulfide 1m -10°C +85°C - - 600 mA - Nitrile -
RS Stock No. 122-8382
Mfr. Part No.116826
MYR235.95
Each
units
Float - Vertical SPST NO Polypropylene 24in -40°C +66°C - - - 10bar - -
RS Stock No. 756-4220
Mfr. Part No.RSF104H100JN
BrandCynergy3
MYR119.35
Each
units
Float - Vertical NO/NC Polypropylene - -20°C +100°C - - 1 A - Nitrile -
RS Stock No. 845-982
Mfr. Part No.RSF53V100MC
BrandCynergy3
MYR100.92
Each
units
Float - Vertical NO/NC Nylon 1m -20°C +75°C - - 600 mA - Nitrile -
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