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. 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. 205-6910
Mfr. Part No.MS10A
BrandCynergy3
MYR158.69
Each
units
Float - - NO PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
RS Stock No. 431-8399
Mfr. Part No.SSF211X100
BrandCynergy3
MYR393.42
Each
units
Float - Horizontal NO/NC Stainless Steel 1m - +120°C - - 500 mA 5bar - -
RS Stock No. 122-8411
Mfr. Part No.149350
MYR548.59
Each
units
Float - Vertical SPST NC Brass 25ft -40°C +110 (Oil) °C, +82 (Water) °C - - - 150psi - -
RS Stock No. 338-9794
Mfr. Part No.MS10B
BrandCynergy3
MYR173.36
Each
units
Float - - NC PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
RS Stock No. 338-9744
Mfr. Part No.RSF74Y100RN
BrandCynergy3
MYR83.83
Each
units
Float - Horizontal External NO/NC Polypropylene 1m -20°C +100°C - - 600 mA - Nitrile -
RS Stock No. 725-9864
Mfr. Part No.RSF84H100R
BrandCynergy3
MYR83.64
Each
units
Float - Horizontal External NO/NC Polypropylene 1m -20°C +100°C - - 600 mA - - -
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. 122-8391
Mfr. Part No.182600
MYR128.50
Each
units
Float - Horizontal SPST NO/NC Versaplast 24in -40°C +121.1°C - - - 6.8bar Buna N -
RS Stock No. 725-9858
Mfr. Part No.RSF76H100RN
BrandCynergy3
MYR145.69
Each
units
Float - Horizontal External NO/NC Polyphenylene Sulfide 1m -10°C +120°C - - 600 mA - Nitrile -
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. 122-8396
Mfr. Part No.165900
MYR96.39
Each
units
Float - Horizontal SPST NO/NC Nylon 24in -40°C +121.1°C - - - 3.4bar HNBR -
RS Stock No. 122-8392
Mfr. Part No.131100
MYR273.26
Each
units
Float - Horizontal SPST NO/NC Polypropylene 24in -40°C +107.2°C - - - 6.8bar - -
RS Stock No. 756-4126
Mfr. Part No.SSF212X100-14G
BrandCynergy3
MYR528.27
Each
units
Float - Horizontal NO/NC Stainless Steel 1m - - - - 500 mA 10bar - -
RS Stock No. 756-4286
Mfr. Part No.RSF78H100RN
BrandCynergy3
MYR103.35
Each
units
Float - Horizontal External NO/NC Polypropylene 1m -20°C +100°C - - 1 A - Nitrile -
RS Stock No. 122-8422
Mfr. Part No.118125
MYR305.83
Each
units
Float - Horizontal SPST NO Brass 24in -40°C +149 (Oil) °C, +82 (Water) °C 240V - 60 mA dc, 80 mA ac 300psi - -
RS Stock No. 780-0236
Mfr. Part No.SSF67A25B300PM12
BrandCynergy3
MYR879.10
Each
units
Float - Vertical NO/NC Stainless Steel - -20°C +135°C - - 600 mA 10bar Nitrile -
RS Stock No. 124-2569
Mfr. Part No.RSF47HGP/RS
BrandCynergy3
MYR230.15
Each
units
Float - Horizontal NO/NC Polyvinylidene Fluoride - -10°C +105°C 300V 300V 1 A - Viton -
RS Stock No. 122-8415
Mfr. Part No.160405
MYR702.77
Each
units
Float - Vertical SPST NC Aluminium 24in -40°C +121 (Oil) °C, +82 (Water) °C - - - 250psi - -
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