Patent ID: 7829809

Claim:
Service switching device comprising: an insulating housing, including, at least one housing shell including a front-panel side and an opposite fastening side as well as narrow and broad sides connecting the front-panel and the fastening sides; at least one covering part, wherein the at least one housing shell and the at least one covering part are connected by first connecting means, which act on the broad sides of the at least one housing shell and the at least one covering part and hold them together whilst forming a peripheral joining line; accommodating areas for connection terminals adjacent the narrow sides; and a second connecting means provided adjacent a terminal accommodating area and in the region of the narrow side associated therewith, which second connecting means holds the at least one housing shell and the at least one covering part together at the peripheral joining line wherein the second connecting means is a snap-action hook, which is fitted in a housing interior close to the narrow side of the at least one housing shell or the at least one covering part and can be latched into a latching position with a first latching face, which is fitted to the at least one covering part or the at least one housing shell in a position corresponding to the snap-action hook, when the at least one housing shell and the at least one covering part are placed one on top of the other, the snap-action hook being a first sprung web, which protrudes at right angles with respect to the broad side of the at least one housing shell or the at least one covering part and in the region of the joining line and bears a latching tab with a second latching face at its free end, the second latching face forming an acute angle with the sprung web; and a locking element being provided which acts on the snap-action hook in a sprung manner in the direction of the latching position for preventing unlatching when the at least one covering part is spread apart from the at least one housing, shell in the region of the terminal accommodating area.