The invention relates to an electrical device (10), notably intended to control an electric machine, comprising: a first zone filled with an insulating material (A) and comprising a first electronic unit (12) embedded in the insulating material (A); a second zone filled with an insulating material (B) and comprising a second electronic unit (18) embedded in the insulating material (B); and a third zone filled with an insulating material (B) and comprising at least one electrical connection element (22) embedded in the insulating material (B), the at least one electrical connection element (22) connecting the first electronic unit (12) with the second electronic unit (18); in which the first and the second zone are each in contact with the third zone so that the electrical device comprises at least one space extending around the third zone and between the first and the second zone.