Abstract: The present invention relates to demagnetizing objects in a fusion cake, objects used in vehicle construction, turbines, diesel engines and other equipment. A system of the present invention comprises four rectilinear working conductors in the shape of busbars which are assembled in pairs on each lateral side of the object to be treated over the whole length thereof, wherein said busbars are arranged one above the other at a distance determined by the object height. The system also comprises power supply modules and side working modules supporting the working busbars. Unipolar generator can be used for power supply. The side modules can be transformed to enable processing of objects having various widths, heights and lengths. The system can be transported over land, and, when the module bodies are made water-tight, it can be used for processing floating objects and transported by sea.