Patent ID: 8308516

Claim:
A spring terminal element ( 1 ) having a busbar piece ( 2 ), a tensioning bracket ( 3 ), which is mounted on the busbar piece ( 2 ) such that it can move relative to the busbar piece ( 2 ) and has a clamping edge ( 5 a , 5 b ), which engages under the busbar piece ( 2 ), for clamping an electrical conductor (L) between the clamping edge ( 5 a , 5 b ) and the busbar piece ( 2 ), and a helical spring ( 8 ), which is operatively connected to the busbar piece ( 2 ) and to the tensioning bracket ( 3 ) and exerts a spring force between the tensioning bracket ( 3 ) and the busbar piece, wherein an operating cylinder ( 10 , 19 ) with a screw thread is mounted such that it can rotate and fixed in position in the extent direction of the operating cylinder ( 10 , 19 ) on the tensioning bracket ( 3 ) or on the busbar piece ( 2 ), wherein the operating cylinder ( 10 , 19 ) is arranged with its screw thread ( 11 ) essentially in the internal area of the tensioning bracket ( 3 ), at least in the clamping state when it is clamped on an electrical conductor (L), and wherein the screw thread ( 11 ) on the operating cylinder ( 10 , 19 ) engages with a screw thread ( 12 ) on an operating section ( 13 ), which is coupled to the tensioning bracket ( 3 ) or to the busbar piece ( 2 ), in order to move the tensioning bracket relative to the busbar piece ( 2 ) during rotation of the operating cylinder ( 10 , 19 ).