The ornamental design for ground fault circuit interrupter, as shown and described.
FIG. 1 is a front elevation of a ground fault circuit interrupter according to a first embodiment;
FIG. 2 is a front perspective view of the ground fault circuit interrupter of FIG. 1;
FIG. 3 is a rear perspective view of the ground fault circuit interrupter of FIG. 1;
FIG. 4 is a front elevation of a ground fault circuit interrupter according to a second embodiment;
FIG. 5 is a front perspective view of the ground fault circuit interrupter of FIG. 4; and,
FIG. 6 is a rear perspective view of the ground fault circuit interrupter of FIG. 4.
In the drawings, the broken lines shown in the top panel, port plug, and openings depict unclaimed environmental subject matter. All other broken lines in the drawings depict the boundaries of the claim and form no part of the claimed design.