The ornamental design for a powerswitch, as shown and described.
FIG. 1 is a perspective view of a power switch for processing circuitry, the power switch of our new design being shown with a housing;
FIG. 2 is a top view of the power switch and the housing;
FIG. 3 is a front view of the power switch and the housing;
FIG. 4 is a rear side view of the housing;
FIG. 5 is a right side view of the housing;
FIG. 6 is a left side view of the housing; and,
FIG. 7 is a bottom plan view of the housing.
The inside bottom of the power switch is non-ornamental and does not form a part of our new design. The broken lines in FIGS. 1-7 showing structure of the housing are illustrative of environmental structure only and do not form a part of the claimed design.