The ornamental design for electrical switchgear enclosure, as shown and described.
FIG. 1 is a perspective view of the electrical switchgear enclosure;
FIG. 2 is a right side elevation;
FIG. 3 is a front elevation;
FIG. 4 is a left side elevation;
FIG. 5 is a top plan view, the bottom plan view forming no part of the claimed design;
FIG. 6 is a back elevation;
FIG. 7 is an enlarged partial perspective view showing the encircled region 7 in FIG. 1; and,
FIG. 8 is a partial sectional view taken at line 8-8 shown in FIG. 3.
The broken lines shown in FIGS. 1-6 are for the purpose of illustrating portions of the hinges, brackets and latch of the electrical switchgear enclosure and form no part of the claimed design. The partial perspective view in FIG. 7 and the sectional view in FIG. 8 are provided for the purpose of illustrating the contour of the exterior surface of the claimed design which is not apparent from the other views of the drawings.