Grundfos Unilift KP 250-A1 submersible pump 012H1600 Unilift KP250-A1 Rp5/4 1x230V 0.5kW 3m cable 1-stage, vertical submersible motor pump made of chrome-nickel steel, with vertical pressure port, with inlet strainer and handle, including 3 m power cable and float switch for automatic switching on/off. The pump has a half-open impeller with 10 mm free passage. It is suitable for pumping groundwater, surface water and rainwater. The pump is equipped with two shaft seals consisting of two lip seals with grease lubrication. The pump is driven by a 1-phase submersible motor with a split tube pot and with thermal overload protection. Design in insulation class F. The motor is filled with a non-toxic liquid and is cooled by the medium pumped through the outer casing of the pump. The rotor shaft is supported by two maintenance-free carbon bearings, which are also cooled by the pumped medium.