Patent ID: 8295019

Claim:
A polarity reversal protection unit comprising: a pyrotechnic disconnecting unit; a detector device; a tripping element; a first connection element electrically connected to at least a consumer connection; a second connection element electrically connecting a supply support point to the first connection element, wherein the pyrotechnic disconnecting unit is arranged on at least one of the connection elements, the tripping element has a first connection electrically insulated from the connection elements and electrically connected to the detector device, and the tripping element has a second connection connected with one of the connection elements spatially within the pyrotechnic disconnecting unit, such that a case of polarity reversal connecting a current flow from the second connection of the tripping element to the first connection of the tripping element and to the detector device triggers the pyrotechnic disconnecting unit causing an electrical disconnection of the connection elements; and wherein at least one of the connection elements has an opening for passing through the insulated first connection.