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 Stock No. 177-9136
Mfr. Part No.9036GG2
HK$828.12
Each
units
Float Switch - Pedestal Mount - Noryl Thermoplastic Resin - -30°C +105°C 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 177-9133
Mfr. Part No.9037HG32
HK$1,213.16
Each
units
Float Switch - Screw In - Polypropylene - -30°C +105°C 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 177-9134
Mfr. Part No.9036DW31
HK$2,751.84
Each
units
Float Switch - Pedestal Mount - Cast Aluminium - -30°C +105°C 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 177-9141
Mfr. Part No.9037HG30
HK$1,084.37
Each
units
Float Switch - Screw In - Polypropylene - -30°C +105°C 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 177-9132
Mfr. Part No.9037HG30Z20
HK$1,084.37
Each
units
Float Switch - Screw In - Polypropylene - -22°F +220°F 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 177-9131
Mfr. Part No.9037EG9
HK$1,499.46
Each
units
Float Switch - Flange Mount - Polypropylene - -30°C +105°C 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 177-9145
Mfr. Part No.9036GG2R
HK$762.34
Each
units
Float Switch - Pedestal Mount - Noryl Thermoplastic Resin - -30°C +105°C 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 177-9140
Mfr. Part No.9037HG37
HK$1,084.37
Each
units
Float Switch - Screw In - Polypropylene - -30°C +105°C 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 177-9126
Mfr. Part No.9036DG2R
HK$431.99
Each
units
Float Switch - Pedestal Mount - Polypropylene - -30°C +105°C 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 177-9143
Mfr. Part No.9037HG36Z20
HK$1,084.37
Each
units
Float Switch - Screw In - Polypropylene - -22°F +220°F 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 177-9128
Mfr. Part No.9037HG32LZ20
HK$872.54
Each
units
Float Switch - Screw In - Polypropylene - -22°F +220°F 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 177-9127
Mfr. Part No.9036DG2
HK$399.88
Each
units
Float Switch - Pedestal Mount - Polypropylene - -30°C +105°C 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -
RS Stock No. 177-9125
Mfr. Part No.9036FG
HK$196.50
Each
units
Float Switch - Pedestal Mount - Polypropylene - -30°C +105°C 230 (Single Phase) V, 475 (3 Phase) V 230V - - - -