BALANCE-TYPE ELECTRIC CURRENT SENSOR

[Object] There is provided a magnetic balance type current sensor that includes a magnetic detection element and a plurality of coils. The characteristics of the magnetic detection element change depending on an induced magnetic field induced by a current to be measured, and each of the plurality of coils includes a coil wire section disposed on a surface located away from a reference plane containing a sensitivity axis direction of the magnetic detection element. Each of the plurality of coils includes a lead wire section whose one end portion is connected to one end portion of the coil wire section, and each of the plurality of coils includes two electrode sections that are individually located at each end of each of the plurality of coils and that are electrically connected individually to the coil wire section and to the lead wire section. Each of the plurality of coils is capable of generating a canceling magnetic field when a feedback current is passed by using the two electrode sections as an applying section. The lead wire sections and the coil wire sections have crossing portions in each of which one of the lead wire sections and one of the coil wire sections are layered with an insulating section interposed so as to overlap each other in a first direction, which is a winding axis direction of the coil wire sections. The two electrode sections are located outside envelope curves of the coil wire sections when viewed in the first direction. The magnetic balance type current sensor is capable of efficiently responding to various requirements concerning measurement ranges and the like.