A sensor device for use in detecting current in a conductor is provided. The sensor includes a non-magnetic substrate defining an aperture structured to receive a conductor therein, a coil comprising a plurality of turns wound about at least a portion of the substrate, and a housing for enclosing the substrate and coil. The housing includes a dielectric material having a dielectric constant and positioned adjacent to the coil and at least partially within the aperture such that the dielectric material is disposed between the coil and the conductor when the conductor is received through the aperture and at least one spacer coupled to the aperture to facilitate maintaining a position of the coil relative to the conductor, wherein each of the spacers is positioned offset from the dielectric material such that each of the spacers does not radially extend between the coil and the conductor.