AN ELECTRICAL POWER CONVERTER UNIT, AN ELECTRICAL POWER CONVERSION DEVICE AND AN INDUSTRIAL VEHICLE INCLUDING THIS ELECTRICAL POWER CONVERTER UNIT

An electrical power converter unit () includes: a first connection interface () comprising two leads () forming a DC input/output interface for connecting a first electrical device to the power converter unit, a three-phase rectifier power converter circuit () and a second connection interface () for connecting a second electrical device to the power converter unit. The second connection interface includes a switching unit () adapted to switch between:—a DC input/output mode, in which first, second and third arms of the power converter circuit () are electrically connected together, forming one DC input/output; and—an AC input/output mode, in which the arms are disconnected from each other, forming separate input/outputs for a three-phase AC voltage.