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Float Switches  
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Industrial  float (LR switch 250V 10A inductive load  e.g 1 kw 230v ac electrical motor on a pump, or a 2.5 kw inductive load such as a heater )

data sheet

The photograph of a float switch type Tear Drop is fitted with an internal rolling ball switch,  mercury switches are no longer used for environmental reasons..  The float switch is provided with cable, 5m, 10m, or 20m.  The photograph shows the float switch with an in-line weight,  the float switch pivots about the weight.  The material of construction is PVC and rubber to provide a very robust corrosion resistant switch that can be used to activate alarm systems, or to switch pumps on or off. 

The cable contains three wires one  (brown) of which is common, a choice is then made which one of the other wires is used to create the circuit to form a normally open or normally closed status.  Additional details and prices of the switch are provided in our on-line store.

Economy  float switch
Economy float switch (LR switch 250V 10A inductive load  e.g 1 kw 230v ac electrical motor on a pump, or a 2.5 kw inductive load such as a heater )
data sheet
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The economy float switch is a low cost basic unit supplied with 10m of PVC cable.  The switch is an internal roller ball reed switch.  This switch is used for a variety of applications,  such as the control of submersible pumps. 

The cable must be secured to an object or weight in order to provide a pivot point for the float.

The system can be used in fresh water, sea water, sewerage and industrial effluent.

Application Notes

If you wish to use a float switch in a potentially explosive environment then it is important the comply with all safety regulations and to use an intrinsically safe float switch. 

Intrinsically safe  float switch for low voltage, Ui = 30V, Ii=100mA 8v, 8mA dc

Our intrinsically safe float switch is used for industrial applications where there may be flammable liquids or explosive gases

 data sheet

The standard industrial and economy float switch can be used for all applications and have a similar specification.  However the industrial float switch is more robust and is likely to give many more years of service.  The materials of construction are suitable for all water types and applications including ;

| swimming pools | aquaculture | drinking water | sewage effluent treatment | seawater | industrial wastewater |

If the float switch is being used  in strong acids, alkalis, oxidising agents or solvents then please check the float switch data sheet.  If your water type is not covered then please contact Dryden Aqua directly.