The invention relates to a plug connector (1) for telecommunications and data technology, for connection of a balanced data cable, with the plug connector (1) having an electrically insulating plug connector housing (2) as well as first contacts (8) and second contacts (7), with the first contacts making contact with a plurality of conductor pairs in a balanced data cable, and with the second contacts being able to make electrical contact with the contacts of a complementary plug connector, with in each case two first contacts being associated with one conductor pair and with each first contact being associated with one second contact, with the first contacts being galvanically connected to their associated second contacts, and with all the conductor pairs each being associated with a common-mode filter arrangement.