A power reception device comprising: a coil ; an electric unit electrically connected to the coil ; and a metal case disposed to be adjacent to the coil , the metal case being configured to accommodate the electric unit , wherein the electric unit includes at least one active element , the metal case includes an inner-side wall and an outer-side wall , the inner-side wall is adjacent to the coil , the outer-side wall is positioned such that the inner-side wall is positioned between the coil and the outer-side wall , and the at least one active element is provided at a position closer to the outer-side wall than to the inner-side wall , the electric unit including a filter including a filter coil connected to the coil , a rectifier electrically connected to the filter by a first electric power line and a second electric power line , a protection circuit electrically connected to the first electric power line and the second electric power line , and a converter electrically connected to the rectifier , the protection circuit including a protection controller configured to control driving of the protection circuit by switching between a state in which the first electric power line and the second electric power line are electrically connected, and a state in which the electric connection between the first electric power line and the second electric power line is cut, and a converter controller configured to control driving of the converter , and a distance between the converter controller and the filter coil being longer than a distance between the protection controller and the filter coil . a coil ; an electric unit electrically connected to the coil ; and a metal case disposed to be adjacent to the coil , the metal case being configured to accommodate the electric unit , wherein the electric unit includes at least one active element , the metal case includes an inner-side wall and an outer-side wall , the inner-side wall is adjacent to the coil , the outer-side wall is positioned such that the inner-side wall is positioned between the coil and the outer-side wall , and the at least one active element is provided at a position closer to the outer-side wall than to the inner-side wall , the electric unit including a filter including a filter coil connected to the coil , a rectifier electrically connected to the filter by a first electric power line and a second electric power line , a protection circuit electrically connected to the first electric power line and the second electric power line , and a converter electrically connected to the rectifier , a filter including a filter coil connected to the coil , a rectifier electrically connected to the filter by a first electric power line and a second electric power line , a protection circuit electrically connected to the first electric power line and the second electric power line , and a converter electrically connected to the rectifier , the protection circuit including a protection controller configured to control driving of the protection circuit by switching between a state in which the first electric power line and the second electric power line are electrically connected, and a state in which the electric connection between the first electric power line and the second electric power line is cut, and a converter controller configured to control driving of the converter , and a protection controller configured to control driving of the protection circuit by switching between a state in which the first electric power line and the second electric power line are electrically connected, and a state in which the electric connection between the first electric power line and the second electric power line is cut, and a converter controller configured to control driving of the converter , and a distance between the converter controller and the filter coil being longer than a distance between the protection controller and the filter coil . <EOS>