A
current sensor assembly includes a sensor coil, an electrostatic shield coil, a core, a housing, and a
magnetic shield. The sensing coil, electrostatic shield coil, core, housing, and
magnetic shield can be of toroidal symmetry and arranged coaxially about a pair of primary current conductors. The conductors can be either asymmetric or symmetric with respect to the geometric center of the remaining sensor
assembly. The core and a secondary winding make up a
current sensor. The core is cylindrically shaped and fabricated of non-magnetic material. The secondary winding is wound over the cylindrical core to form a toroidally shaped winding. When assembled into the
current sensor assembly, the core and windings are disposed around two single turn primary windings through which AC currents to be measured flow. Alternatively, the conductor can be flat and the sensor can be a
solid state sensor that includes an electrostatic shield. The conductor can have a
magnetic flux concentrator positioned about the conductor in the same region where the sensor is located.