Abstract: A contact insert for a conductor connection terminal having a bus bar piece and a clamping spring having a clamping leg with a clamping edge for connecting an electrical conductor. The clamping edge of the clamping leg and the bus bar piece form a clamping point for the electrical conductor to be connected. At least two lateral webs are arranged on the clamping spring on mutually opposite sides of the clamping spring. The free ends of the lateral webs are connected to one another by a transverse web, and the lateral webs and the transverse web form a circumferentially closed aperture on the clamping spring. The bus bar piece extends between the lateral webs, at least when a clamping point is closed, and the bus bar piece passes through the circumferentially closed aperture at least twice.