The ornamental design for a powerdistributionunit, as shown and described.
FIG. 1 is a front right perspective view of a power distribution unit showing our new design;
FIG. 2 is a right side view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is an enlarged front view with unclaimed detail removed for illustrative clarity thereof;
FIG. 7 is an enlarged rear view thereof;
FIG. 8 is an enlarged front right perspective view thereof; and,
FIG. 9 is an enlarged front left perspective view thereof.
The broken line portion of the figure drawings is included to show unclaimed subject matter only and forms no part of the claimed design. The Dot-Dash-Dot broken line portion of FIGS. 8 and 9 is included to show unclaimed boundary line and forms no part of the claimed design.