The ornamental design for a lever for electricalsocketconnector assembly, as shown and described.
FIG. 1 is a perspective view of a lever for electrical socket connector assembly, showing our new design, in a typical usage environment, wherein the lever is in a released position;
FIG. 2 is a left side elevational view thereof; and,
FIG. 3 is another perspective view thereof, in a typical usage environment, wherein the lever is in a locked and retained position.
The broken line portion of the figure drawings is included to show unclaimed subject matter and usage environment only and forms no part of the claimed design.