Current sensor and electrical control device equipped with same

This current sensor is provided with a magnetic detection unit and a first soft magnet. A magnetic flux in a second axial direction, which is generated by a current flowing through the conductor in the first axial direction, is applied to the magnetic detection unit. The first soft magnet includes a first portion, a second portion disposed between the conductor and the first portion, and a third portion magnetically connecting the first portion and the second portion. The first soft magnet is separated from both the conductor and the magnetic detection portion, and surrounds the magnetic detection portion with a first portion, a second portion, and a third portion along a first plane orthogonal to the second axis direction. 本发明的电流传感器具有磁检测部和第一软磁体。磁检测部被施加第二轴方向的磁通量，该第二轴方向的磁通量由沿着第一轴方向流过导体的电流产生。第一软磁体包括：第一部分，配置在导体与第一部分之间的第二部分，以及磁连接第一部分与第二部分的第三部分。第一软磁体与导体和磁检测部的双方分开，并且沿着与第二轴方向正交的第一平面以第一部分、第二部分和第三部分环绕磁检测部。