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 174-8372
製造零件編號LLF44HFP
BrandCynergy3
HK$220.91
單位
Float - Horizontal Internal SPNO Polypropylene - -20°C +100°C 300V 300V 1 A - Nitrile 1 A
RS庫存編號 124-2568
製造零件編號RSF47YGP/RS
BrandCynergy3
HK$318.16
單位
Float - Horizontal NO/NC Polyvinylidene Fluoride - -10°C +105°C 240V 120V 600 mA - Viton -
RS庫存編號 124-2582
製造零件編號RSF77YVP/RS
BrandCynergy3
HK$291.27
單位
Float - Horizontal NO/NC Polyvinylidene Fluoride - -10°C +105°C 240V 120V 600 mA - Viton -
RS庫存編號 762-1036
BrandRS PRO
HK$331.58
單位
Float - Vertical NO/NC Stainless Steel 300mm -40°C +125°C 250V 200V 2 A - - -
RS庫存編號 124-2555
製造零件編號SSF50X100X/RS
BrandCynergy3
HK$1,404.72
單位
Float - Flange Mount NO/NC Stainless Steel 304 (Stem), Stainless Steel 316 (Float) 1m - +80°C 240V 200V 500 mA 20bar - -
RS庫存編號 756-4306
製造零件編號MP1C-5
BrandCynergy3
HK$1,077.08
單位
Float - Horizontal, Vertical NO/NC PE 5m 0°C +55°C - - 250 mA 10bar - -
RS庫存編號 177-9132
製造零件編號9037HG30Z20
HK$1,084.37
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 174-8428
BrandRS PRO
HK$610.60
單位
Float - Horizontal Internal SPNO Stainless Steel 1m - +120°C 300V 300V 500 mA - - 0.5 A
RS庫存編號 725-9886
製造零件編號RSF54H100R1/8
BrandCynergy3
HK$185.26
單位
Float - Vertical NO/NC Polypropylene 1m -20°C +100°C - - 1 A - Nitrile -
RS庫存編號 191-9512
BrandRS PRO
HK$961.53
單位
Float - External, Horizontal NO/NC 304 Stainless Steel (Stem), 316 Stainless Steel (Float) - - +120°C 300V 300V 500 mA 5bar - 500 mA
RS庫存編號 177-9143
製造零件編號9037HG36Z20
HK$1,084.37
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 756-4299
製造零件編號LITTLE-EX-10M
BrandCynergy3
HK$1,230.51
單位
Float - Horizontal, Vertical NO/NC PE 10m 0°C +55°C - - 21.4 mA 10bar - -
RS庫存編號 174-8383
製造零件編號LLF73Y100RN
BrandCynergy3
HK$184.86
單位
Float - Horizontal External SPNO Nylon 1m -20°C +75°C 240V 120V 600 mA - Nitrile 0.6 A
RS庫存編號 492-8924
製造零件編號SSF67A25B125
BrandCynergy3
HK$1,524.90
單位
Float - Vertical Direct Load Stainless Steel - -20°C +135°C - - 600 mA 10bar Nitrile -
RS庫存編號 869-7545
製造零件編號RSF106YVP
BrandCynergy3
HK$196.31
單位
Float - Vertical NO/NC Polyphenylene Sulfide - -10°C +120°C 240V 120V 600 mA - Viton -
RS庫存編號 174-8391
製造零件編號LLF77Y100GN
BrandCynergy3
HK$404.54
單位
Float - Horizontal External SPNO Polyvinylidene Fluoride 1m -10°C +105°C 240V 120V 600 mA - Nitrile 0.6 A
RS庫存編號 756-4126
製造零件編號SSF212X100-14G
BrandCynergy3
HK$1,079.99
單位
Float - Horizontal NO/NC Stainless Steel 1m - - - - 500 mA 10bar - -
RS庫存編號 191-9510
BrandRS PRO
HK$149.75
單位
Float - Horizontal NO/NC Polyphenylene Sulphide 1m -10°C +120°C 240V 120V 600 mA - - 600 mA
RS庫存編號 124-2587
製造零件編號RSF87YP/RS
BrandCynergy3
HK$293.31
單位
Float - Horizontal NO/NC Polyvinylidene Fluoride - -10°C +105°C 240V 120V 600 mA - - -
RS庫存編號 124-2589
製造零件編號RSF107Y100GN/RS
BrandCynergy3
HK$325.75
單位
Float - Vertical NO/NC Polyvinylidene Fluoride 1m -10°C +105°C 240V 120V 600 mA - Nitrile -