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. 869-7536
Mfr. Part No.RSF106Y100JV
BrandCynergy3
MYR108.23
Each
units
Float - Vertical NO/NC Polyphenylene Sulfide 1m -10°C +120°C 240V 120V 600 mA - Viton -
RS Stock No. 122-8386
Mfr. Part No.173250
MYR248.28
Each
units
Float - Vertical SPST NO PVDF 24in -40°C +121°C - - - 3bar - -
RS Stock No. 859-3333
Mfr. Part No.FSH-21
MYR195.52
Each
units
Float Switch - Horizontal SPST Polypropylene - -20°C +80°C - - 0.5 (Switching) A, 1 (Carrying) A 57psi - -
RS Stock No. 869-7602
Mfr. Part No.RSF88YP
BrandCynergy3
MYR71.80
Each
units
Float - Horizontal NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - - -
RS Stock No. 348-8021
Mfr. Part No.RSF66A25B175
BrandCynergy3
MYR241.89
Each
units
Float - Vertical Direct Load Polyphenylene Sulfide 1m -10°C +85°C - - 600 mA - Nitrile -
RS Stock No. 350-2082
Mfr. Part No.LFL2-BK-U-PUR5
MYR341.15
Each
units
Float - Horizontal Direct Load Polypropylene 5m -20°C +85°C - - 1 A dc, 3 A ac 2bar - -
RS Stock No. 361-1833
Mfr. Part No.FFSMC10C
BrandCynergy3
MYR692.94
Each
units
Float - - Direct Load PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
RS Stock No. 756-4292
Mfr. Part No.SSF212X100H
BrandCynergy3
MYR704.62
Each
units
Float - Horizontal NO/NC Stainless Steel 1m -20°C +180°C - - 500 mA 5bar - -
RS Stock No. 339-5216
Mfr. Part No.LFL1-BK-N-PVC5
MYR362.77
Each
units
Float - Horizontal NAMUR Polypropylene 5m -20°C +70°C - - 2.2 mA 2bar - -
RS Stock No. 122-8406
Mfr. Part No.156000
MYR572.99
Each
units
Float - Horizontal SPST NC Valox 25ft -40°C +80°C - 100V - 15psi - -
RS Stock No. 348-8037
Mfr. Part No.RSF64BEXS
BrandCynergy3
MYR291.00
Each
units
Float - Vertical Direct Load Polyphenylene Sulfide 1.5m 0°C +75°C - - 600 mA - - -
RS Stock No. 725-9868
Mfr. Part No.RSF86Y050T
BrandCynergy3
MYR96.72
Each
units
Float - Horizontal External NO/NC Polyphenylene Sulfide 1m -10°C +120°C - - 600 mA - - -
RS Stock No. 338-9801
Mfr. Part No.MS20A
BrandCynergy3
MYR183.12
Each
units
Float - - Direct Load PE 5m 0°C +55°C - - 2 A dc, 8 A ac 10bar - -
RS Stock No. 889-1267
Mfr. Part No.LV20-1201
BrandFlowline
MYR160.23
Each
units
Float Level Switch - Vertical NO/NC Polypropylene 600mm -40°C +80°C 120V 120V 10 A 10psi - -
RS Stock No. 361-1849
Mfr. Part No.FFSMC10CU
BrandCynergy3
MYR865.67
Each
units
Float - - Direct Load PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
RS Stock No. 454-9105
Mfr. Part No.SSF212XPL
BrandCynergy3
MYR566.77
Each
units
Float - Horizontal NO/NC Stainless Steel - - +120°C - - 500 mA 5bar - -
RS Stock No. 906-9522
Mfr. Part No.CFS2-DNBPN-20
MYR135.00
Each
units
Float Switch - Cable SPDT Polypropylene 240.2in 0°C +50°C 250V - - 1bar - 10 A
RS Stock No. 756-4141
Mfr. Part No.SSF215XPM12
BrandCynergy3
MYR664.75
Each
units
Float - Horizontal NO/NC Stainless Steel 1m - - - - 500 mA 10bar - -
RS Stock No. 397-0564
Mfr. Part No.RSF84Y100R
BrandCynergy3
MYR81.46
Each
units
Float - Horizontal NO/NC Polypropylene 1m -20°C +100°C - - 600 mA - Silicone, Viton -
RS Stock No. 317-932
Mfr. Part No.RSF73Y050QM
BrandCynergy3
MYR77.11
Each
units
Float - Horizontal External Direct Load Nylon 500mm -20°C +75°C - - 600 mA - Silicone -
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