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 174-8399
製造零件編號LLF73YNP
BrandCynergy3
HK$166.45
單位
Float - Horizontal External SPNO Nylon - -20°C +75°C 240V 120V 600 mA - Nitrile 0.6 A
RS庫存編號 869-7582
製造零件編號RSF76YVP
BrandCynergy3
HK$194.79
單位
Float - Horizontal NO/NC Polyphenylene Sulfide - -10°C +120°C 240V 120V 600 mA - Nitrile -
RS庫存編號 379-4039
製造零件編號FFSMC10AW
BrandCynergy3
HK$1,210.95
單位
Float - - Direct Load PE 5m 0°C +55°C - - 1 A dc, 4 A ac 10bar - -
RS庫存編號 174-8425
BrandRS PRO
HK$140.01
單位
Float - Horizontal External SPNO Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile 0.6 A
RS庫存編號 725-9912
製造零件編號SSV66A813E34N183
BrandCynergy3
HK$979.85
單位
Float - Vertical NO/NC Stainless Steel 1m 0°C +120°C - - 2.5 A 10bar - -
RS庫存編號 725-9818
製造零件編號TSF46H100DF
BrandCynergy3
HK$284.62
單位
Float - Horizontal NO/NC Polyphenylene Sulfide 1m -10°C +120°C - - 600 mA - Nitrile -
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 174-8370
製造零件編號LLF43YFP
BrandCynergy3
HK$159.44
單位
Float - Horizontal Internal SPNO Nylon - -20°C +75°C 240V 120V 600 mA - Nitrile 0.6 A
RS庫存編號 869-7545
製造零件編號RSF106YVP
BrandCynergy3
HK$201.20
單位
Float - Vertical NO/NC Polyphenylene Sulfide - -10°C +120°C 240V 120V 600 mA - Viton -
RS庫存編號 780-0276
製造零件編號FSV10AR06
BrandCynergy3
HK$931.50
單位
Float - Vertical Relay Stainless Steel - -20°C +85°C - - 4 A, 10 A 8bar Nitrile -
RS庫存編號 183-7327
製造零件編號FTS-I200F14A
BrandSick
HK$3,159.93
單位
Flow Sensor Industry Vertical - Polyester 200mm -40°C +70°C - 30V - 100bar - 100 mA
RS庫存編號 725-9892
製造零件編號RSF56H100R1/8
BrandCynergy3
HK$207.00
單位
Float - Vertical NO/NC Polyphenylene Sulfide 1m -10°C +120°C - - 1 A - Nitrile -
RS庫存編號 177-9136
製造零件編號9036GG2
HK$828.12
單位
Float Switch - Pedestal Mount - Noryl Thermoplastic Resin - -30°C +105°C 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS庫存編號 869-7618
製造零件編號SSF215XPL
BrandCynergy3
HK$1,156.25
單位
Float - Horizontal NO/NC Stainless Steel - -20°C +120°C 300V 300V 500 mA 10bar Nitrile -
RS庫存編號 124-2556
製造零件編號SSF50X100X-C/RS
BrandCynergy3
HK$1,341.79
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 780-0214
製造零件編號SSF67A25B125PM12
BrandCynergy3
HK$1,406.56
單位
Float - Vertical NO/NC Stainless Steel - -20°C +135°C - - 600 mA 10bar Nitrile -
RS庫存編號 124-2599
製造零件編號MC050AH/RS
BrandCynergy3
HK$1,472.64
單位
Float - Cable Mount NO Stainless Steel 304 5m 0°C +130°C - 60V 250 mA 4bar - -
RS庫存編號 869-7520
製造零件編號RSF103Y100JN
BrandCynergy3
HK$179.26
單位
Float - Vertical NO/NC Nylon 1m -20°C +75°C 240V 120V 600 mA - Nitrile -
RS庫存編號 174-8410
製造零件編號LLF78YNP
BrandCynergy3
HK$176.10
單位
Float - Horizontal External SPNO Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile 0.6 A
RS庫存編號 725-9849
製造零件編號RSF46H100RF
BrandCynergy3
HK$176.99
單位
Float - Horizontal Internal NO/NC Polyphenylene Sulfide 1m -10°C +105°C - - 600 mA - Nitrile -