The ornamental design for the switch for a haircuttingdevice, as shown and described.
FIG. 1 is a top perspective view of the present switch for a hair cutting device;
FIG. 2 is a left side view of same;
FIG. 3 is a right side view of the switch for a hair cutting device of FIG. 1;
FIG. 4 is a front view of same;
FIG. 5 is a top view of the switch for a hair cutting device of FIG. 1;
FIG. 6 is a bottom view of same; and,
FIG. 7 is a top perspective view of the present switch for a hair cutting device shown mounted on a hair cutting device, the latter shown in broken lines.
The broken line disclosure of a hair cutting device in FIG. 7 illustrates the environment and forms no part of the claimed design. The broken lines shown throughout the remaining figures illustrate a portion of the switch that forms no part of the claimed design.