ELECTRIC POWER CONVERSION DEVICE

An electric power conversion device is provided with a case () including a mounting portion () extending along a plane defined by a first direction and a second direction that are orthogonal to each other, and a side wall () provided along a periphery of the mounting portion, a primary side connection portion () and a secondary side connection portion () provided on the case, a plurality of reactors arranged along the second direction in the case and connected in parallel to one another, and a switching unit including a plurality of switching devices positioned in the case on one side of the reactors in the first direction, arranged along the first direction, and respectively connected to the reactors.