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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

    Sensata / Cynergy3
    Float
    -
    Vertical
    NO/NC
    Stainless Steel
    1m
    -20°C
    +120°C
    -
    -
    500 mA
    20bar
    Nitrile
    -
    SSV66-SM16
    Sensata / Cynergy3
    Float
    -
    Vertical
    NO/NC
    Stainless Steel
    1m
    -20°C
    +120°C
    -
    -
    500 mA
    20bar
    Nitrile
    -
    SSV66-SM16
    Sensata / Cynergy3
    Float
    -
    Horizontal Internal
    SPNO
    Polyvinylidene Fluoride
    1m
    -10°C
    +105°C
    300V
    300V
    1 A
    -
    Viton
    -
    LLF40
    WIKA
    Float
    Liquid Level Control
    Horizontal
    SPDT
    Stainless Steel
    2m
    -
    -
    100V
    100V
    -
    -
    -
    -
    RLS-1000
    WIKA
    Float
    Liquid Level Control
    Head Mount
    -
    Stainless Steel
    -
    -
    -
    -
    -
    -
    -
    -
    -
    L-BLR-S
    Sensata / Cynergy3
    Float
    -
    Horizontal Internal
    SPNO
    Polyvinylidene Fluoride
    1m
    -10°C
    +105°C
    300V
    300V
    1 A
    -
    Nitrile
    -
    LLF40
    Sensata / Cynergy3
    Float
    -
    Horizontal External
    SPNO
    Polyvinylidene Fluoride
    1m
    -10°C
    +105°C
    240V
    120V
    600 mA
    -
    Viton
    -
    LLF 70
    WIKA
    Float
    Liquid Level Control
    Threaded
    SPDT
    Stainless Steel
    1m
    -
    -
    50V
    75V
    -
    -
    -
    -
    L-FLS-M
    Sensata / Cynergy3
    Float
    -
    Horizontal Internal
    NO/NC
    Polyphenylene Sulfide
    500mm
    -10°C
    +120°C
    300V
    300V
    600 mA
    -
    Viton
    -
    RSF40
    Sensata / Cynergy3
    Float
    -
    Horizontal External
    NO/NC
    Polyphenylene Sulfide
    500mm
    -10°C
    +120°C
    300V
    300V
    600 mA
    -
    Viton
    -
    RSF70
    Sensata / Cynergy3
    Float
    -
    Vertical
    NO/NC
    Stainless Steel
    1m
    -20°C
    +120°C
    300V
    300V
    500 mA
    20bar
    Nitrile
    -
    SSV66-SM16
    Sensata / Cynergy3
    Float
    -
    Horizontal
    NO/NC
    Polyvinylidene Fluoride
    -
    -10°C
    +105°C
    240V
    120V
    600 mA
    -
    Viton
    -
    RSF70
    Sensata / Cynergy3
    -
    -
    Cable Mount
    NO
    Polypropylene
    5m
    0°C
    +55°C
    250V
    110V
    10 A
    10bar
    -
    -
    LM
    Sensata / Cynergy3
    Float
    -
    Vertical
    NO/NC
    Stainless Steel
    1m
    -20°C
    +120°C
    300V
    300V
    500 mA
    20bar
    Nitrile
    -
    SSV66-SM16
    Sensata / Cynergy3
    -
    -
    Horizontal Internal
    SPNO
    Polyphenylene Sulfide
    1m
    -10°C
    +120°C
    300V
    300V
    1 A
    -
    Nitrile
    -
    LLF40
    Sensata / Cynergy3
    Float
    -
    Horizontal External
    SPNO
    Polypropylene
    1m
    -20°C
    +100°C
    240V
    120V
    600 mA
    -
    Nitrile
    -
    LLF 70
    Sensata / Cynergy3
    Float
    -
    Horizontal External
    SPNO
    Polypropylene
    1m
    -20°C
    +100°C
    240V
    120V
    600 mA
    -
    Silicone
    -
    LLF 70
    WIKA
    Float
    Liquid Level Control
    Threaded
    SPDT
    Stainless Steel
    -
    -
    -
    230V
    230V
    -
    -
    -
    -
    L-FLS-S
    WIKA
    Float
    Liquid Level Control
    Threaded
    SPDT
    Stainless Steel
    2m
    -
    -
    100V
    100V
    -
    -
    -
    -
    RLS-1000
    Sensata / Cynergy3
    Float
    -
    Vertical
    NO/NC
    Stainless Steel
    -
    -20°C
    +135°C
    250V
    120V
    600 mA
    10bar
    Nitrile
    -
    SSF67PM12
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