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 124-2581
製造零件編號RSF77H100GV/RS
BrandCynergy3
HK$387.75
單位
Float - Horizontal NO/NC Polyvinylidene Fluoride 1m -10°C +105°C 300V 300V 1 A - Viton -
RS庫存編號 174-8415
BrandRS PRO
HK$140.25
單位
Float - Vertical Internal NO/NC Polypropylene 1m -20°C +100°C 240V 120V 600 mA - Nitrile 0.6 A
RS庫存編號 177-9128
製造零件編號9037HG32LZ20
HK$872.54
單位
Float Switch - Screw In - Polypropylene - -22°F +220°F 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS庫存編號 756-4306
製造零件編號MP1C-5
BrandCynergy3
HK$1,083.75
單位
Float - Horizontal, Vertical NO/NC PE 5m 0°C +55°C - - 250 mA 10bar - -
RS庫存編號 122-8426
製造零件編號118127
HK$594.26
單位
Float - Horizontal SPST NO Brass 24in -40°C +82.2 (Water) °C, +149 (Oil) °C 240V - 60 mA dc, 80 mA ac 300psi - -
RS庫存編號 174-8358
製造零件編號LLF43Y100RF
BrandCynergy3
HK$172.36
單位
Float - Horizontal Internal SPNO Nylon 1m -20°C +75°C 240V 120V 600 mA - Nitrile 0.6 A
RS庫存編號 124-2594
製造零件編號RSF157HFP/RS
BrandCynergy3
HK$372.48
單位
Float - Vertical NO/NC Polyvinylidene Fluoride - -10°C +105°C 300V 300V 1 A - Nitrile -
RS庫存編號 756-4223
製造零件編號RSF124Y030KC
BrandCynergy3
HK$222.52
單位
Float - Horizontal NO/NC Nylon, Polypropylene - -10°C +80°C - - 600 mA - Nitrile -
RS庫存編號 454-9127
製造零件編號SSF28X100
BrandCynergy3
HK$926.96
單位
Float - Vertical Direct Load Stainless Steel 350mm -10°C +120°C - - 500 mA 40bar - -
RS庫存編號 725-9861
製造零件編號RSF83H100R
BrandCynergy3
HK$147.62
單位
Float - Horizontal External NO/NC Nylon 1m -20°C +75°C - - 600 mA - - -
RS庫存編號 122-8425
製造零件編號117716
HK$953.55
單位
Float - Horizontal SPST NO Stainless Steel 316 24in -40°C +149°C 240V - 60 mA dc, 80 mA ac 100psi - -
RS庫存編號 124-2593
製造零件編號RSF107HVP/RS
BrandCynergy3
HK$381.04
單位
Float - Vertical NO/NC Polyvinylidene Fluoride - -10°C +105°C 300V 300V 1 A - Viton -
RS庫存編號 725-9858
製造零件編號RSF76H100RN
BrandCynergy3
HK$185.36
單位
Float - Horizontal External NO/NC Polyphenylene Sulfide 1m -10°C +120°C - - 600 mA - Nitrile -
RS庫存編號 174-8357
製造零件編號LLF43H100RF
BrandCynergy3
HK$215.45
單位
Float - Horizontal Internal SPNO Nylon 1m -20°C +75°C 300V 300V 1 A - Nitrile 1 A
RS庫存編號 725-9855
製造零件編號RSF76H050TV
BrandCynergy3
HK$227.70
單位
Float - Horizontal External NO/NC Polyphenylene Sulfide 1m -10°C +120°C - - 600 mA - Nitrile -
RS庫存編號 725-9852
製造零件編號RSF83Y100R
BrandCynergy3
HK$107.12
單位
Float - Horizontal External NO/NC Nylon 1m -20°C +75°C - - 600 mA - - -