A conductor connection contact element for clamping an electrical conductor, having a power rail piece and a clamping spring. The power rail piece is formed from a sheet-metal part with an oppositely situated second side wall, a base section and an oppositely situated cover section. The side walls, together with the base section and the cover section, border a conductor insertion channel. The clamping spring is arranged on the power rail piece. The clamping spring has an abutment section and a clamping section with a clamping edge for clamping the electrical conductor. The abutment section is arranged on the base section of the power rail piece. The freely movable end of the clamping section extends toward the cover section. An actuation section which is accessible to an actuation tool lies adjacent to the clamping edge in the direction of the side wall.