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IPG20 Intelligent Pump Guard

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D50 Heavy Duty Level Switch


  • High and low floatless level control for tanks and sumps
  • 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


  • Level control in confi ned 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


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.

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L Series

  • Stainless steel or Polypropylene
  • Built in manual override
  • 15 Amp 500 Volt SPDT Switch
  • Unique Seal-less coupling
  • Weatherproof to IP67
  •  Simple to install
  •  Fully serviceable


The L Series side entry level switch provides a reliable accurate and low cost solution to tank level control. The switch is available in all thermoplastic construction in a combination of 316 Stainless Steel and Polypropylene. The level switch can be supplied with a 500 Volt rated single pole double throw microswitch for general control circuit use or with a SPDT reed switch for low voltage low current applications. The L series level switch is built tough to give a long reliable service life in the most arduous applications.

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