The ornamental design for a “mechanical activator for electrical contactor”, as shown and described.
FIG. 1 is a left perspective view of a mechanical activator for electrical contactor thereof;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a left side view thereof; and,
FIG. 7 is a right perspective view thereof.
The broken line showing of portions of the mechanical activator for electrical contactor is included for the purpose of illustrating environmental structure and forms no part of the claimed design. The mechanical activator for electrical contactor is shown with a symbolic break in its length. The appearance of any portion of the article between the break lines forms no part of the claimed design. All surfaces not shown form no part of the claimed design.