The invention relates to a multiphase rotary electric machine including a bearing (16, 18) provided with a plate (3) that is perforated for the passage of the phase outputs of the machine, of the type that comprises: an electrically conductive heat sink (9) bearing first current rectifying elements; second current rectifying elements (borne by the plate (3)); a connector (113) disposed between the heat sink (9) and the plate (3); and a protective cover on top of the heat sink/connector assembly. The outer periphery of the connector includes faces and hooks (114) for securing the phase outputs. According to the invention, the cover is provided internally with inner dividers which extend into the space defined by the securing portion of the hook and the corresponding face of the heat sink/connector assembly. The invention is suitable for motor vehicle alternators.
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