Connection terminal with - an insulating material housing, which has a conductor insertion channel, which extends in the direction of a conductor insertion axis with an at least partially circumferential conductor channel wall arranged coaxially to the conductor insertion axis, and an actuating channel arranged next to the conductor insertion channel, - a U-shaped curved leg spring, which has a contact leg, a clamping leg and a spring bow connecting the contact leg to the clamping leg, - a conductor rail with a connection opening and - a longitudinally displaceable actuating pusher accommodated in the actuating channel, wherein the leg spring is inserted into the connection opening, the contact leg is supported on the conductor rail and a clamping edge of the clamping leg with a contact region of the conductor rail forms a spring clamping connection for clamping an electrical conductor inserted into the conductor insertion channel, wherein the actuating pusher projects into the connection opening in the actuating state, in which the clamping leg is displaced towards the contact leg by the actuating pusher, characterized in that the central actuating axis of the actuating channel, defined by the longitudinal displacement direction of the actuating pusher in the actuating channel, is offset from the central axis of the connection opening in the width direction of the connection opening, and an actuating head received in the actuating channel is thicker in the width direction than the adjoining section of the actuating pusher leading to the connection opening, wherein the actuating pusher is symmetrical overall in that the same symmetrical actuating pusher can be used at both ends of a terminal block in a mirror-image relationship to one another. - an insulating material housing, which has a conductor insertion channel, which extends in the direction of a conductor insertion axis with an at least partially circumferential conductor channel wall arranged coaxially to the conductor insertion axis, and an actuating channel arranged next to the conductor insertion channel, - a U-shaped curved leg spring, which has a contact leg, a clamping leg and a spring bow connecting the contact leg to the clamping leg, - a conductor rail with a connection opening and - a longitudinally displaceable actuating pusher accommodated in the actuating channel, wherein the leg spring is inserted into the connection opening, the contact leg is supported on the conductor rail and a clamping edge of the clamping leg with a contact region of the conductor rail forms a spring clamping connection for clamping an electrical conductor inserted into the conductor insertion channel, wherein the actuating pusher projects into the connection opening in the actuating state, in which the clamping leg is displaced towards the contact leg by the actuating pusher, characterized in that the central actuating axis of the actuating channel, defined by the longitudinal displacement direction of the actuating pusher in the actuating channel, is offset from the central axis of the connection opening in the width direction of the connection opening, and an actuating head received in the actuating channel is thicker in the width direction than the adjoining section of the actuating pusher leading to the connection opening, wherein the actuating pusher is symmetrical overall in that the same symmetrical actuating pusher can be used at both ends of a terminal block in a mirror-image relationship to one another.