D50 Heavy Duty Dual Point Level Switch


  • Australian Made
  • High and Low Level Control
  • 2 HP 1.5kW 20 AMP 500V S.P.D.T switch
  • No metal parts in contact with liquids
  • Heavy duty all metal housing
  • Weatherproof to IP67
  • Super reliable magnetic action


The D50 two position level switch operates on Archimedes Principle. When non floating solid displacers suspended from the switch, are immersed in liquid their weight is reduced by an amount equal to the weight of the liquid they displace. The weight change is detected and used to actuate a magnetically isolated switch. Surface agitation, froth, floating or submerged solids do not affect the action of the D50 switch. The displacement principle depends on the specific gravity of the liquid in which the displacers are suspended. The D50 is set to operate in water with a specific gravity of 0.95 or greater.


  • Level control in confined or tight locations
  • Suitable for pump in or pump out applications
  • Water tank level control
  • Effluent and liquid waste level control
  • Suits slurry and high solid applications
  • Suitable for use in sea water, acids and many chemicals
  • Works in sumps. pits, bores, tanks, wells or bunds

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