1. A housing assembly, comprising: a housing defining (i) an open receiving chamber (3) having an open upper side, and (ii) an enclosed interior chamber, the housing having a circumferential edge which acts as a creep barrier at a creep barrier at the open upper side; and a potting compound positioned in the open receiving chamber and the enclosed interior chamber, wherein the potting compound forms a concave surface with respect to the circumferential edge at the open upper side, wherein the open receiving chamber defines, at one end, an opening to the enclosed interior chamber which adjoins the open receiving chamber, wherein the open upper side of the open receiving chamber has different heights at the transition to the enclosed interior chamber that define a height difference, wherein the circumferential edge has (i) an outward descending slope, and (ii) a continuous curvature formed by tangential transitions so as to overcome the height difference, and wherein the circumferential edge enables temporary overfilling of the open receiving chamber during a potting process thereby forming a stable convex potting compound surface.