Support rail system comprising: a support rail having • an elongate support profile rail having a longitudinal extension, which rail delimits an interior space and comprises an elongate coupling opening, and • an elongate busbar which extends longitudinally in the interior space of the support profile rail, the busbar comprising at least one electrical conductor for the electrical connection of electrical or electronic components via the coupling opening, the support rail system being characterized in that it further comprises: a tapping element which is detachably inserted into the interior space via the coupling opening and is electrically coupled to the busbar by means of a contact portion, the tapping element further comprising a provision element which is provided externally with respect to the support rail and is electrically connected to the contact portion by an electrical connection element, via an opening in the support profile rail which is independent of the coupling opening, in order to provide the electrical tapping of the contact portion from the busbar externally via the provision element. a support rail having • an elongate support profile rail having a longitudinal extension, which rail delimits an interior space and comprises an elongate coupling opening, and • an elongate busbar which extends longitudinally in the interior space of the support profile rail, the busbar comprising at least one electrical conductor for the electrical connection of electrical or electronic components via the coupling opening, • an elongate support profile rail having a longitudinal extension, which rail delimits an interior space and comprises an elongate coupling opening, and • an elongate busbar which extends longitudinally in the interior space of the support profile rail, the busbar comprising at least one electrical conductor for the electrical connection of electrical or electronic components via the coupling opening, the support rail system being characterized in that it further comprises: a tapping element which is detachably inserted into the interior space via the coupling opening and is electrically coupled to the busbar by means of a contact portion, the tapping element further comprising a provision element which is provided externally with respect to the support rail and is electrically connected to the contact portion by an electrical connection element, via an opening in the support profile rail which is independent of the coupling opening, in order to provide the electrical tapping of the contact portion from the busbar externally via the provision element. a tapping element which is detachably inserted into the interior space via the coupling opening and is electrically coupled to the busbar by means of a contact portion, the tapping element further comprising a provision element which is provided externally with respect to the support rail and is electrically connected to the contact portion by an electrical connection element, via an opening in the support profile rail which is independent of the coupling opening, in order to provide the electrical tapping of the contact portion from the busbar externally via the provision element.