UNI clamping bracket according to DIN EN 62561-1, for integrating mounting systems, e.g., of PV systems into the functional potential equalization and lightning protection potential equalization according to DIN EN 62305-3. The contact plate made of stainless steel allows for the connection of different conductor materials (Cu, Al, St/tZn, and stainless steel) with common mounting systems, such as those made of aluminum, without the risk of contact corrosion. Designed with a hammer head screw M8, lock nut, and double overhang, for example, for the through-wiring of profiles.