The ornamental design for a trailerblock for an electrical disconnect, as shown and described.
FIG. 1 illustrates a perspective view of the design for the trailer block, wherein parts of the system are shown in broken lines for illustrative purposes;
FIG. 2 illustrates a front view thereof set forth in FIG. 1;
FIG. 3 illustrates a rear view thereof set forth in FIG. 1;
FIG. 4 illustrates a left plan view thereof set forth in FIG. 1.
FIG. 5 illustrates a right plan view thereof set forth in FIG. 1.
FIG. 6 illustrates a top plan view thereof set forth in FIG. 1; and,
FIG. 7 illustrates a bottom plan view thereof set forth in FIG. 1.
In this drawing, the solid lines illustrate the claimed ornamental design, whereas the broken lines illustrate environmental features that form no part of the claimed design.