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Grundfos Unilift KP 250 With Float Switch



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Grundfos Unilift KP 250 A Sump Pump With Float Switch

Grundfos Unilift KP 250 with Float Switch a lightweight and robust drainage pump designed for pumping drain water and grey wastewater containing particles up to a size of up to 10 mm. The UNILIFT KP range is mostly constructed from quality stainless steel to ensure a long life and has the ability to pump down to a water level of 3 mm above the floor (by removing the strainer). It can be used in permanent installations or as a portable pump and can be supplied with or without float switch, for automatic or manual operation.


  • 1 x 240 V, 50 Hz
  • Semi open impeller
  • Carry handle
  • Thermal overload protection
  • Automatic restart
  • Non return value supplied for backflow prevention

Unilift KP pumps are submersible drainage pumps suitable for both temporary and permanent free-standing installation. They can be used for pumping drain water or grey waste-water. They are also suitable for installation in collecting tanks. The Unilift KP is a single-stage drainage pump with semi-open impeller, designed for the pumping of drain water and grey waste-water. All Unilift KP pumps can be supplied with or without a level switch. The variants are designated as A, AV or M, for automatic or manual operation. The Unilift KP-AV variant for narrow pits is supplied with a non-return flap valve for installation in the outlet. The strainer is clipped onto the pump housing.

The Unilift KP. Single-stage, submersible, stainless steel drainage pump is a robust design with upward-pointing discharge port positioned on the top of the pump. The outer casing is made in one piece. The mains cable and the cable of the level switch are both connected to a single, vulcanized, water-tight plug which is inserted in a socket on the hermetically-sealed stator housing. The motor is a single- or three-phase synchronous canned motor with liquid-filled rotor chamber and water-lubricated bearings.

The motor is cooled by the pumped liquid flowing around it.

  • Enclosure class: IP 68
  • Insulation class: F

The motor incorporates automatic overload protection which cuts out the motor in the event of overload. When it has cooled to normal temperature, the motor restarts automatically.


The Grundfos Unilift KP pumps are designed for the pumping of:

  • Water and rainwater in horticulture
  • Water from rivers and lakes
  • Rainwater, drainage water and water from flooding
  • Water for filling/emptying containers, ponds, tanks, etc.
  • Effluents from showers, washing machines and sinks below sewer level
  • Pool water
  • Ditch drainage water
  • Groundwater (lowering applications)
  • Domestic effluents from septic and sludge-treating systems
  • Effluents from viaducts, underpasses, etc.
  • Drainage water from garage sprinkler systems


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