IEC-compatible, sensorless, magnetless synchronous reluctance motor (exception: motor sizes 0.55 kW / 0.75 kW with 1500 rpm are designed with permanent magnets) of efficiency class IE4 / IE5 (super/ultra premium efficiency) to IEC TS 60034-30-2:2016 for operation on a KSB PumpDrive 2, KSB PumpDrive 2 Eco or KSB PumpDrive R variable speed system. Suitable for connection to three-phase 380-480 V power supply (via PumpDrive). The motor mounting points comply with EN 50347 specifications to ensure compatibility with standardised IEC frame motor applications and full interchangeability with IE2 or IE3 standardised asynchronous motors. Envelope dimensions lie within the limits for IE2 / IE3 motors as recommended in DIN V 42673 (07-2011). The motor is controlled without rotor position sensors. The efficiency of the motor also exceeds 95 percent of nominal efficiency when the motor runs at 25 percent of its nominal power on a quadratic torque-speed curve. The motor is magnetless which means that, in particular, so-called rare earths are not used in production. Drive production is thus sustainable and environmentally friendly.
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Main Applications

  • Dry-installed pumps, in particular those that accumulate a high number of operating hours per year and have to accommodate fluctuating loads
  • Rotating equipment


  • Energy-efficient operation thanks to high efficiency at the rated load point
  • The efficiency of the motor also exceeds 95 % of the nominal efficiency when the motor runs at 25 % of its nominal power on a quadratic torque-speed curve.
  • Fully interchangeable with IE2 motors thanks to compliance with DIN EN 50347 and envelope dimensions in accordance with DIN V 42673-4

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TitleFormatSizeLast change
icon download-pdfBrochure KSBSuPremEpdf0.653/27/2020
icon download-pdfBrochure KSB SuPremEpdf1.93/27/2020
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icon download-pdfKSB SuPremEpdf3.365/24/2019