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. 361-1798
Mfr. Part No.RSF26Y100RF
BrandCynergy3
$51.49
Each
units
Float - Direct Mounting NC Polyphenylene Sulfide 1m -10°C +100°C - - 600 mA - Silicone, Viton -
RS Stock No. 780-0383
Mfr. Part No.LLS-KIT-V
BrandCynergy3
$179.42
1 Kit
Kit(s)
Float - Vertical NO - - - - - - - - - -
RS Stock No. 228-1992
Mfr. Part No.RSF34W100RF
BrandCynergy3
$52.98
Each
units
Float - Horizontal NO/NC Polypropylene 1m -20°C +100°C - - 5 A - Nitrile -
RS Stock No. 431-8399
Mfr. Part No.SSF211X100
BrandCynergy3
$177.00
Each
units
Float - Horizontal NO/NC Stainless Steel 1m - +120°C - - 500 mA 5bar - -
RS Stock No. 122-8383
Mfr. Part No.201540
$28.26
Each
units
Float - Vertical SPST NO/NC Polypropylene 24in -40°C +100°C - - - 15psi - -
RS Stock No. 395-7044
Mfr. Part No.011-1700
$81.78
Each
units
Float - Horizontal, Vertical Relay Brass/NBR 1m -40°C +80°C - - - 10bar - -
RS Stock No. 756-4144
Mfr. Part No.SSF217XPM12
BrandCynergy3
$231.75
Each
units
Float - Horizontal NO/NC Stainless Steel - - +120°C - - 500 mA 5bar - -
RS Stock No. 338-9722
Mfr. Part No.RSF73Y100RN
BrandCynergy3
$38.95
Each
units
Float - Horizontal External NO/NC Nylon 1m -20°C +75°C - - 600 mA - Nitrile -
RS Stock No. 725-9928
Mfr. Part No.SSH66TE34NPS
BrandCynergy3
$332.42
Each
units
Float - Horizontal NO/NC Stainless Steel 1m 0°C +120°C - - 100 mA 10bar - -
RS Stock No. 339-5200
Mfr. Part No.LFL1-CK-N-PVC5
$134.90
Each
units
Float - Horizontal NAMUR Polypropylene 5m -20°C +70°C - - 2.2 mA 3bar - -
RS Stock No. 317-932
Mfr. Part No.RSF73Y050QM
BrandCynergy3
$36.94
Each
units
Float - Horizontal External Direct Load Nylon 500mm -20°C +75°C - - 600 mA - Silicone -
RS Stock No. 869-7539
Mfr. Part No.RSF103YNP
BrandCynergy3
$34.40
Each
units
Float - Vertical NO/NC Nylon - -20°C +75°C 240V 120V 600 mA - Nitrile -
RS Stock No. 395-7094
Mfr. Part No.010-0391
$253.20
Each
units
Float - Horizontal, Vertical Relay Stainless Steel 1m -40°C +150°C - - - 30bar - -
RS Stock No. 446-2569
Mfr. Part No.RSF66A50A100
BrandCynergy3
$85.50
Each
units
Float - Vertical Direct Load Polyphenylene Sulfide 1m -10°C +85°C - - 600 mA - Nitrile -
RS Stock No. 122-8400
Mfr. Part No.164860
$159.92
Each
units
Float - Horizontal SPST NO/NC Stainless Steel 316 24in -40°C +107°C - - - 100psi - -
RS Stock No. 395-7050
Mfr. Part No.011-1900
$128.83
Each
units
Float - Horizontal, Vertical Relay Brass/NBR 1m -40°C +80°C - - - 10bar - -
RS Stock No. 492-8902
Mfr. Part No.SSF67A25B75
BrandCynergy3
$361.56
Each
units
Float - Vertical Direct Load Stainless Steel - -20°C +135°C - - 600 mA 10bar Nitrile -
RS Stock No. 122-8391
Mfr. Part No.182600
$42.97
Each
units
Float - Horizontal SPST NO/NC Versaplast 24in -40°C +121.1°C - - - 6.8bar Buna N -
RS Stock No. 492-8918
Mfr. Part No.SSF67A25B100
BrandCynergy3
$357.80
Each
units
Float - Vertical Direct Load Stainless Steel - -20°C +135°C - - 600 mA 10bar Nitrile -
RS Stock No. 338-9794
Mfr. Part No.MS10B
BrandCynergy3
$60.89
Each
units
Float - - NC PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
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