Spring clamping connection terminal comprising a housing or cage for receiving a bare end portion of an electrical rigid or flexible cable, conductor or wire and lodging at least one clamping arrangement which comprises a spring force loaded arm automatically movable between a retracted position wherein said arm is located outside a passage or channel following a wire insertion opening of said housing, and allows obstacle free introduction of said bare end portion into said passage or channel, and an extended position in which said arm is at least partly located in said passage or channel and is able to come into contact under elastic constraint with said bare end portion of said electrical conductor or wire received within said passage or channel, thus securing the insertion of said end portion of the considered conductor or wire, wherein said clamping arrangement also comprises: means (8, 9) for locking said arm in its retracted position, by engagement with a respective anchoring site, trigger means able to release the spring loaded arm from its locked retracted position and being configured to be physically activated by the bare end portion of said wire or conductor, a contact part or surface on said trigger means, to be hit or pressed on by an extremity of the bare end portion of the electrical conductor or wire in order to release the spring loaded arm from its locked retracted position, wherein said trigger means is located and arranged beyond the arm and the site, in a direction of insertion of the wire or conductor, and consists of a lever arm extending in said direction, the contact part consisting of a free end portion of said lever arm, wherein the connection terminal also comprises an integrated clamping release means able to displace the spring force loaded arm from its extended position into its retracted one, against the spring force, the locking means (8, 9) providing an automatical locking of said arm in its retracted position when said position is reached, said reset means being associated with and acting on one the spring loaded arm, connection terminal characterized in that the reset means consists in an electrically insulated lever mounted through a hinged link onto said housing and comprising a pushing part (15") able to contact the spring loaded arm over all its pivoting movement between its retracted position and its extended position and a pressing part, in the shape of a push button for contact with a finger of a user and in that the lever comprises means preventing mutual engagement of the locking means (8, 9) upon actuation of said lever when a conductor or wire is present in the passage, and clamped by the concerned arm, in that the means preventing mutual engagement of the locking means (8, 9) consist of means able to use the presence of at least one wire in the passage, or in at least one passage in case of a same reset means associated with several passages, to limit the displacement of the reset means so that it cannot reach the position wherein an automatical mutual engagement of the locking means (8, 9) takes place; and in that the insulated pivoting lever forming the reset means is provided, at or near a free end of said reset means opposed to it hinged end, with a projecting portion, such as a wall or a wing part, extending in a parallel manner to and in the same direction than the pushing part (15"), a free edge of said projecting portion configured to contact a conductor or wire located within a concerned passage and stopping the pivoting displacement of said lever before its pushing part (15") is able to displace the concerned spring loaded arm sufficiently to cause mutual engagement of the locking means (8, 9). means (8, 9) for locking said arm in its retracted position, by engagement with a respective anchoring site, trigger means able to release the spring loaded arm from its locked retracted position and being configured to be physically activated by the bare end portion of said wire or conductor, a contact part or surface on said trigger means, to be hit or pressed on by an extremity of the bare end portion of the electrical conductor or wire in order to release the spring loaded arm from its locked retracted position, wherein said trigger means is located and arranged beyond the arm and the site, in a direction of insertion of the wire or conductor, and consists of a lever arm extending in said direction, the contact part consisting of a free end portion of said lever arm, wherein the connection terminal also comprises an integrated clamping release means able to displace the spring force loaded arm from its extended position into its retracted one, against the spring force, the locking means (8, 9) providing an automatical locking of said arm in its retracted position when said position is reached, said reset means being associated with and acting on one the spring loaded arm, connection terminal characterized in that the reset means consists in an electrically insulated lever mounted through a hinged link onto said housing and comprising a pushing part (15") able to contact the spring loaded arm over all its pivoting movement between its retracted position and its extended position and a pressing part, in the shape of a push button for contact with a finger of a user and in that the lever comprises means preventing mutual engagement of the locking means (8, 9) upon actuation of said lever when a conductor or wire is present in the passage, and clamped by the concerned arm,