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    Float Switches

    What is a Float Switch?

    A float switch is a level sensor used to detect the level of liquid usually in a tank, container or well. The flotation part of the device sits on top of the liquid and will switch on the rise and fall of the liquid. Float switches 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.

    How does a Float Switch work?

    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 switch sits on top of a water level and the changing fluid level will cause the reed change to work (for instance close or open) at a specific level. The internal mechanical switch opens or closes the electrical circuit with gravity which enables it to turn equipment on and off such as a water pump.

    What materials are float switches made of?

    • 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

    • Highly Flexible
    • High Mechanical Load Rating
    • Insensitive to Turbulence
    • Shock and Rupture Proof
    • WRAS approvals

    Applications of Float Switches

    Float Switches can be used in several situations, some of which include:

    • Sump Pits
    • Fuel Tanks
    • Coolant Tanks
    • Oil/Water Separators
    • Wastewater and Sewage Treatment

    Browse the broad range of Float Switches RS Group has to offer and order today for next day delivery

    650 Products showing for Float Switches

    Float
    -
    Vertical
    NO/NC
    Polyphenylene Sulfide
    1m
    -10°C
    +120°C
    240V
    120V
    600 mA
    -
    -
    -
    -
    Float
    -
    External
    NO
    HDPE
    5m
    0°C
    +45°C
    250V
    24V
    10 A
    10bar
    -
    -
    -
    Float
    -
    Internal
    -
    Polyphenylene Sulfide
    1m
    -10°C
    +85°C
    240V
    120V
    600 mA
    -
    Nitrile
    -
    -
    Float
    Liquid Level Control
    Vertical Mounting
    NO
    Polypropylene
    350mm
    -20°C
    85°C
    200V
    200V
    0.5A
    112psi
    Silicone
    -
    -
    Float
    -
    Vertical
    Direct Load
    Stainless Steel
    300mm
    -10°C
    +120°C
    300V
    300V
    500 mA
    10bar
    -
    -
    -
    Float
    -
    External, Vertical
    NO/NC
    Nylon
    1m
    -20°C
    +75°C
    240V
    120V
    600 mA
    -
    Nitrile
    -
    -
    Float
    -
    Internal
    NO/NC
    Stainless Steel
    1m
    -
    +135°C
    250V
    120V
    600 mA
    10bar
    -
    -
    -
    Float
    -
    Internal
    NO/NC
    Stainless Steel
    1m
    -
    +135°C
    250V
    120V
    600 mA
    10bar
    -
    -
    -
    Float
    -
    Threaded Mount
    -
    -
    2m
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Float
    -
    Threaded Mount
    -
    PVC
    3m
    -
    -
    -
    -
    -
    -
    -
    -
    -
    Float
    -
    Horizontal External
    SPNO
    Stainless Steel
    1m
    -
    +120°C
    300V
    300V
    500 mA
    -
    -
    -
    SSF212
    Float
    -
    Internal
    NO/NC
    Stainless Steel
    1m
    -
    +135°C
    250V
    120V
    600 mA
    10bar
    -
    -
    -
    Float
    -
    Internal
    NO/NC
    Stainless Steel
    1m
    -
    +135°C
    250V
    120V
    600 mA
    10bar
    -
    -
    -
    Float
    -
    Horizontal External
    SPNO
    Nylon
    1m
    -20°C
    +75°C
    240V
    120V
    600 mA
    -
    Nitrile
    -
    RSF70
    Float
    Water, Dilute Acid, Detergent
    Vertical
    Direct Load
    PP
    300mm
    -20°C
    +80°C
    250V
    200V
    700 mA
    1bar
    Silicone
    -
    -
    Float
    -
    External
    NC
    HDPE
    5m
    0°C
    +45°C
    250V
    24V
    10 A
    10bar
    -
    -
    -
    Float
    -
    Horizontal
    NO/NC
    Polyphenylene Sulfide
    1m
    -10°C
    +120°C
    240V
    120V
    600 mA
    -
    Nitrile
    -
    -
    Float
    Liquid Level Control
    Side Mounted
    NO
    Glass Filled Nylon
    500mm
    -20°C
    75°C
    300V
    350V
    0.5A
    0.1bar
    Glass Filled Nylon
    -
    -
    Float
    -
    Horizontal
    NO/NC
    Polyphenylene Sulfide
    1m
    -10°C
    +120°C
    240V
    120V
    600 mA
    -
    -
    -
    -
    Float
    -
    Vertical
    NO/NC
    Polypropylene
    1m
    -20°C
    +100°C
    240V
    120V
    600 mA
    -
    -
    -
    RSF50
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