The Siemens SP260D is a German electric motor for powering electric aircraft, designed and produced by Siemens of Erlangen.
[1] The SP260D is a brushless design producing 261 kW (350 hp), with an inrunner coil.
It has a 95% efficiency.
The low working rpm of the engine means that it can turn a propeller at efficient speeds without the need for a reduction drive.
[1] Data from Tacke[1] Related lists