The ornamental design for a surgeabsorber, as shown and described.
FIG. 1 is a front perspective view of the design for a surge absorber, showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a back view thereof;
FIG. 4 is a first side view thereof;
FIG. 5 is a second side view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken line showing of electrical leads at the top and bottom of the surge absorber shows unclaimed subject matter only and form no part of the claimed design.