The ornamental design for a switchgearhousing, as shown and described herein.
FIG. 1 is an isometric view of the back, left side and top of a switch gear housing of the present invention;
FIG. 2 is an isometric view of the front, left side and top thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is an elevational view of right side thereof;
FIG. 6 is an elevational view of left side thereof;
FIG. 7 is a top elevational view thereof; and,
FIG. 8 is a bottom elevational view thereof.
The subject matter shown in the figures above in dashed lines, including the location and number of bolt holes in the flanges, forms no part of the claimed invention.