The ornamental design for a tripunit for switchingdevices, as shown and described.
FIG. 1 is a perspective side view of a trip unit for switching devices.
FIG. 2 is a front side view of the trip unit shown in FIG. 1.
FIG. 3 is a back side view of the trip unit shown in FIG. 1.
FIG. 4 is a left side view of the trip unit shown in FIG. 1.
FIG. 5 is a right side view of the trip unit shown in FIG. 1.
FIG. 6 is a top view of the trip unit shown in FIG. 1; and,
FIG. 7 is a bottom view of the trip unit shown in FIG. 1.
The broken lines shown in the figures are for the purpose of illustrating portions of the trip unit for switching devices that form no part of the claimed design.