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 122-8410
製造零件編號090-0023
HK$2,229.90
單位
Float - Cable SPST NC Stainless Steel 2m -40°C +80°C - - - 10bar - -
RS庫存編號 756-4286
製造零件編號RSF78H100RN
BrandCynergy3
HK$184.75
單位
Float - Horizontal External NO/NC Polypropylene 1m -20°C +100°C - - 1 A - Nitrile -
RS庫存編號 122-8413
製造零件編號172635
HK$7,208.69
單位
Float - Vertical SPST NO Stainless Steel 316 24in -40°C +148.9°C - - - 750psi - -
RS庫存編號 124-2585
製造零件編號RSF87H100G/RS
BrandCynergy3
HK$355.12
單位
Float - Horizontal NO/NC Polyvinylidene Fluoride 1m -10°C +105°C 300V 300V 1 A - - -
RS庫存編號 174-8423
BrandRS PRO
HK$136.51
單位
Float - Horizontal Internal SPNO Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile 0.6 A
RS庫存編號 869-7573
製造零件編號RSF46YFP
BrandCynergy3
HK$153.26
單位
Float - Horizontal NO/NC Polyphenylene Sulfide - -10°C +120°C 240V 120V 600 mA - Nitrile -
RS庫存編號 492-8968
製造零件編號SSF67V70S1000
BrandCynergy3
HK$8,942.40
單位
Float - Vertical - Aluminium Alloy/Brass/Stainless Steel - - +70°C - - 20 mA - - -
RS庫存編號 869-7570
製造零件編號RSF73YNP
BrandCynergy3
HK$160.53
單位
Float - Horizontal NO/NC Nylon - -20°C +75°C 240V 120V 600 mA - Nitrile -
RS庫存編號 869-7567
製造零件編號RSF158YFP
BrandCynergy3
HK$130.35
單位
Float - Vertical NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile -
RS庫存編號 174-8389
製造零件編號LLF76H100RN
BrandCynergy3
HK$259.90
單位
Float - Horizontal External SPNO Polyphenylene Sulphide 1m -10°C +120°C 300V 300V 1 A - Nitrile 1 A
RS庫存編號 124-2562
製造零件編號RSF47H100GF/RS
BrandCynergy3
HK$350.86
單位
Float - Horizontal NO/NC Polyvinylidene Fluoride 1m -10°C +105°C 300V 300V 1 A - Nitrile -
RS庫存編號 780-0251
製造零件編號SSF67A50A250PM12
BrandCynergy3
HK$1,718.10
單位
Float - Vertical 2NO Stainless Steel - -20°C +135°C - - 600 mA 10bar Nitrile -
RS庫存編號 174-8361
製造零件編號LLF46H100RF
BrandCynergy3
HK$257.21
單位
Float - Horizontal Internal SPNO Polyphenylene Sulphide 1m -10°C +120°C 300V 300V 1 A - Nitrile 1 A
RS庫存編號 124-2554
製造零件編號TSSF212H100/RS
BrandCynergy3
HK$932.48
單位
Float - Horizontal NO/NC Stainless Steel 304 (Stem), Stainless Steel 316 (Float) 1m -20°C +120°C 300V 300V 1 A 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 379-4045
製造零件編號FFSMC10BW
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 869-7554
製造零件編號RSF154YFP
BrandCynergy3
HK$144.89
單位
Float - Vertical NO/NC Polypropylene - -20°C +100°C 240V 120V 600 mA - Nitrile -
RS庫存編號 124-2578
製造零件編號RSF77YNP/RS
BrandCynergy3
HK$291.93
單位
Float - Horizontal NO/NC Polyvinylidene Fluoride - -10°C +105°C 240V 120V 600 mA - Nitrile -
RS庫存編號 780-0239
製造零件編號SSF67A25B225PM12
BrandCynergy3
HK$1,171.16
單位
Float - Vertical NO/NC Stainless Steel - -20°C +135°C - - 600 mA 10bar Nitrile -
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 -