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庫存編號 339-730
製造零件編號RSF43Y050QF
BrandCynergy3
HK$131.62
單位
Float - Horizontal Internal NO/NC Nylon 500 -20°C +75°C - - 600 mA - Nitrile -
RS庫存編號 845-960
製造零件編號RSF54Y100JC
BrandCynergy3
HK$119.94
單位
Float - Vertical NO/NC Polypropylene 1m -20°C +100°C - - 600 mA - Nitrile -
RS庫存編號 454-9105
製造零件編號SSF212XPL
BrandCynergy3
HK$856.70
單位
Float - Horizontal NO/NC Stainless Steel - - +120°C - - 500 mA 5bar - -
RS庫存編號 446-2569
製造零件編號RSF66A50A100
BrandCynergy3
HK$369.10
單位
Float - Vertical Direct Load Polyphenylene Sulfide 1m -10°C +85°C - - 600 mA - Nitrile -
RS庫存編號 869-7576
製造零件編號RSF48YFP
BrandCynergy3
HK$155.30
單位
Float - Horizontal NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile -
RS庫存編號 756-4242
製造零件編號RSF66A25B175P
BrandCynergy3
HK$361.24
單位
Float - Vertical NO/NC Polyphenylene Sulfide - -10°C +85°C - - 600 mA - Nitrile -
RS庫存編號 845-976
製造零件編號RSF44Y050QF
BrandCynergy3
HK$147.92
單位
Float - Horizontal Internal NO/NC Polypropylene 500 -20°C +100°C - - 600 mA - Nitrile -
RS庫存編號 446-2597
製造零件編號RSF66B50B150
BrandCynergy3
HK$403.65
單位
Float - Vertical Direct Load Polyphenylene Sulfide 1m -10°C +85°C - - 600 mA - Nitrile -
RS庫存編號 205-6910
製造零件編號MS10A
BrandCynergy3
HK$305.32
單位
Float - - NO PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
RS庫存編號 338-9794
製造零件編號MS10B
BrandCynergy3
HK$289.80
單位
Float - - NC PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
RS庫存編號 431-8406
製造零件編號SSF212X100
BrandCynergy3
HK$593.44
單位
Float - Horizontal NO/NC Stainless Steel 1m - +120°C - - 500 mA 5bar - -
RS庫存編號 338-9788
製造零件編號RSF56Y100RB
BrandCynergy3
HK$142.08
單位
Float - Vertical NO/NC Polyphenylene Sulfide 1m -10°C +100°C - - 600 mA - Silicone, Viton -
RS庫存編號 211-985
製造零件編號RSF64EXS
BrandCynergy3
HK$489.53
單位
Float - Vertical Direct Load Polyphenylene Sulfide 1.5m 0°C +75°C - - 600 mA - - -
RS庫存編號 395-7145
製造零件編號169555
HK$412.18
單位
Float - Horizontal, Vertical Direct Load Polysulfone - -17.8°C +80°C - - 40 mA 150psi - -
RS庫存編號 338-9801
製造零件編號MS20A
BrandCynergy3
HK$259.57
單位
Float - - Direct Load PE 5m 0°C +55°C - - 2 A dc, 8 A ac 10bar - -
RS庫存編號 331-017
製造零件編號RSF53Y100JC
BrandCynergy3
HK$116.32
單位
Float - Vertical NO/NC Nylon 1m -20°C +75°C - - 600 mA - Nitrile -
RS庫存編號 338-9716
製造零件編號RSF46Y100RG
BrandCynergy3
HK$151.19
單位
Float - Horizontal Internal NO/NC Polyphenylene Sulfide 1 -10°C +120°C - - 600 mA - Silicone, Viton -
RS庫存編號 859-3333
製造零件編號FSH-21
HK$301.08
單位
Float Switch - Horizontal SPST Polypropylene - -20°C +80°C - - 0.5 (Switching) A, 1 (Carrying) A 57psi - -
RS庫存編號 288-9322
製造零件編號RSF76Y050TV
BrandCynergy3
HK$189.01
單位
Float - Horizontal External NO/NC Polyphenylene Sulfide 500mm -10°C +120°C - - 600 mA - Silicone, Viton -
RS庫存編號 348-8009
製造零件編號RSF66A25B125
BrandCynergy3
HK$419.33
單位
Float - Vertical Direct Load Polyphenylene Sulfide 1m -10°C +85°C - - 600 mA - Nitrile -