Improved inverter for three-phase electric motors, comprising a contact-bearing board, a control with rotation axis of electrically insulating material and three connectors firmly attached to said axis, characterized in that two contiguous of said connectors each comprise two pairs of contact pins adapted to establish, in a control position, direct connection between the fixed contacts of the phases to which they belong respectively, in another position of the control cross-connection between the contacts of the two mentioned phases, for their inversion, and in a third position, jointly with the third connector, total disconnection. (Machine-translation by Google Translate, not legally binding)
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