Electromagnetic agitation device for melting furnace of metallic material, in which the agitation device is intended to be installed below the melting furnace, in which below is referred with respect to the direction of gravity, the agitation device being intended to be installed at a bottom of the melting furnace in such a way that a force field of the electromagnetic agitation device is at least partially situated inside the melting furnace for electromagnetic agitation action on molten metal contained inside the melting furnace, the agitation device being intended to placed below the furnace according to a configuration in which a central axis of the agitation device is positioned in the proximity of a central area of the furnace, in which the agitation device comprises elements (11, 12, 13, 14, 15, 16, 19, 31) in which each element (11, 12, 13, 14, 15, 16, 19, 31) is configured for generation of a respective electromagnetic field, in which the element (11, 12, 13, 14, 15, 16, 19, 31) is composed of a quadrangular magnetic nucleus on which a winding is present for passage of current and generation of a respective magnetic field, the agitation device comprising a control unit for controlling the agitation device in which the electromagnetic agitation device comprises at least one first series of first elements (11, 12, 13, 14, 15, 16) for application of reciprocally shifted alternating currents of generation of the force field, which are placed according to a shape in which the first elements (11, 12, 13, 14, 15, 16) of the first series are placed one after the other on an assembly plane, in which the assembly plane is intended to be parallel to the bottom of the melting furnace when the electromagnetic agitation device is in the installed condition at the bottom of the melting furnace, the first elements (11, 12, 13, 14, 15, 16) being placed around a central axis of the agitation device which is an orthogonal central axis with respect to the assembly plane, each winding being composed of at least one conductor wound on the magnetic nucleus so that a winding plane is parallel to the assembly plane, the first elements (11, 12, 13, 14, 15, 16) being placed along a closed path which develops on the assembly plane, the closed path being a circular, elliptical, quadrangular, or polygonal shape defined by the sequence of first elements (11, 12, 13, 14, 15, 16) placed one after the other on the assembly plane, characterised in that the electromagnetic agitation device further comprises one or more further second internal elements (19, 31) of generation of the force field further with respect to the first elements (11, 12, 13, 14, 15, 16) of the first series, in which the one or more second internal elements (19, 31) are placed internally with respect to the closed path defined by the ensemble of the first elements (11, 12, 13, 14, 15, 16) of the first series and further characterised in that the first elements (11, 12, 13, 14, 15, 16) of the first series are placed on the assembly plane according to a central symmetry arrangement with respect to the central axis of the agitation device, in which the central axis is centrally passing with respect to the closed path along which the first elements (11, 12, 13, 14, 15, 16) of the first series are placed, each of the first elements (11, 12, 13, 14, 15, 16) of the first series being placed on the assembly plane according to an arrangement in which each of the first elements (11, 12, 13, 14, 15, 16) is oriented in such a way that a major axis of the quadrangular shape of the magnetic nucleus is tangentially placed with respect to the closed path arrangement of the first series of first elements (11, 12, 13, 14, 15, 16). the electromagnetic agitation device further comprises one or more further second internal elements (19, 31) of generation of the force field further with respect to the first elements (11, 12, 13, 14, 15, 16) of the first series, in which the one or more second internal elements (19, 31) are placed internally with respect to the closed path defined by the ensemble of the first elements (11, 12, 13, 14, 15, 16) of the first series and further characterised in that the first elements (11, 12, 13, 14, 15, 16) of the first series are placed on the assembly plane according to a central symmetry arrangement with respect to the central axis of the agitation device, in which the central axis is centrally passing with respect to the closed path along which the first elements (11, 12, 13, 14, 15, 16) of the first series are placed, each of the first elements (11, 12, 13, 14, 15, 16) of the first series being placed on the assembly plane according to an arrangement in which each of the first elements (11, 12, 13, 14, 15, 16) is oriented in such a way that a major axis of the quadrangular shape of the magnetic nucleus is tangentially placed with respect to the closed path arrangement of the first series of first elements (11, 12, 13, 14, 15, 16).