referring first to fig1 a and 1 b , a first embodiment of a connection terminal 1 will be described . the connection terminal 1 includes a connector body 2 and a terminal connection 20 including at least one recess 21 which extends in an extension direction 43 . more particularly , the extension direction is the direction along which an electrical conductor adapted to be connected with the connection terminal extends . as shown in fig1 b , a continuous electrical conductor 5 is inserted into the recess in the extension direction 43 . the connection terminal 1 provides an electrically conductive connection between two electrical conductors 5 such as a ground conductor 51 and a connection conductor 52 to ground an electrical device ( not shown ). the connection terminal can also be used to provide an electrical connection between two electrical conductors 5 having another function . in order to hold or retain the electrical conductor 5 within the recess 21 , the connection terminal 1 includes a holding device 31 . the holding device 31 at least partially and preferably completely closes the recess 21 . for this purpose , the holding device 31 is connected with the connector body 2 for rotation around an axis 4 extending in the extension direction 43 . the holding device 31 is configured in the shape of an l and includes a first arm 312 and a second arm 313 . in the area where the first arm 312 joins the second arm 313 , a through bore 314 is provided . the connector body 2 includes a bearing bore 24 . in a mounted state , the bearing bore 24 of the connector body 2 and the through bore 314 of the holding device 31 are arranged in alignment with one another to receive a rotary shaft 32 which extends concentrically with the axis 4 . the holding device 31 is mounted in a fixed manner on the rotary shaft 32 . the rotary shaft 32 passes through the bearing bore 24 and the through bore 314 . as a result , the holding device 31 turns or rotates with the rotary shaft 32 in a direction of rotation 41 or counter to it around the axis 4 . accordingly , the holding device can be turned in the direction of rotation 41 from an open position 0 , in which the electrical conductor 5 can be inserted in the recess 21 , to a closed position g , in which the holding device 31 holds the electrical conductor 5 in a radial direction 40 around the axis 4 in the recess 21 . the open 0 and closed g positions of the holding device are shown in particular in connection with the embodiment of fig3 b and 3 c . the holding device 31 has a contact surface 311 for connection with the electrical conductor 5 . the contact surface 311 is arranged on the first and second arms 312 , 313 . it extends on an inner surface of the first and second arms 312 , 313 which faces the connector body 2 particularly when the holding device is in the closed state g . in order to place the electrical conductor 5 in the recess 21 , the electrical conductor 5 is placed against a contact surface 311 of the holding device when the device is in the open state 0 as shown in fig1 b . by rotating the holding device 31 in the direction of rotation 41 , the electrical conductor is introduced into the recess 21 which is closed simultaneously by the holding device 31 and particularly by the first arm 312 of the holding device 31 as shown in fig1 b . in the closed state g of the holding device 31 , the electrical conductor 5 is held with the first arm 312 of the holding device 31 in the recess 21 . the first arm 312 almost completely closes the recess 21 . the first arm 312 and the connector body 2 therefore jointly almost completely surround the electrical conductor 5 in the closed position g . the electrical conductor 5 is then held captive in the recess 21 . the recess 21 is dimensioned so that , in the closed position g , the electrical conductor 5 contacts the connector body 2 in an electrically conductive manner . for that purpose , the connector body 2 is electrically conductive so that no additional components are needed for producing an electrically conductive contact between the electrical conductor 5 such as the ground conductor 51 and an additional electrical conductor 5 such as the connection conductor 52 connected to the connector body 2 . in order to hold the holding device 31 in the closed position g , the terminal connection 20 further includes a clamping device 33 . the clamping device 33 is preferably a clamping screw . the clamping screw is connected with a through bore 23 of the connector body 2 which extends transversely to the extension direction 43 and is adjusted via rotation in a clamping direction 42 from a home position p into a securing position s securing the holding device 31 in the closed position g . the clamping device 33 has a clamping surface 331 , which is arranged on a lower end 332 of the clamping device 33 facing the recess 21 . the clamping surface 331 extends transversely to the clamping direction 42 . in the embodiment shown in fig1 a and 1 b , the clamping device 33 when rotated into the securing position s presses or clamps the electrical conductor 5 into the recess 21 when the holding device 31 is in the closed position g . for the clamping device 33 to hold the holding device 31 in the closed position g , the second arm 313 of the holding device is provided . the second arm 313 is at least partially arranged in a receiving groove 22 which is arranged under the recess 21 of the connector body . the receiving groove 22 extends into the connector body 2 of the connection terminal 1 and is arranged transverse to the extension direction 43 of the electrical conductor . in the closed position g , the holding device second arm 313 is accommodated in the receiving groove 22 . since the electrical conductor 5 in the securing position s is pressed by the clamping device 33 in the clamping direction 42 into the recess 21 , the clamping device 33 acts indirectly on the holding device 31 in the securing position s via the electrical conductor 5 . as a result , the holding device 31 is held in the closed position g . the connection terminal 1 has a symmetric design with respect to a plane of symmetry 13 extending parallel with the extension direction 43 . the connection terminal 1 therefore includes two terminal connections 20 to which a respective continuous electrical conductor 5 can be connected . the terminal connections 20 are arranged on first and second sides 11 , 12 of the plane of symmetry 13 . in addition , for each terminal connection 20 , two spaced parallel holding devices 31 are provided . the clamping device 33 for each of the two terminal connections 20 is arranged between the two holding device 31 of each respective terminal connection 20 . fig2 shows an additional embodiment of a connection terminal 1 . however , in this connection terminal 1 only one holding device 31 is provided for each terminal connection for a respective electrical conductor 5 . the connection terminal 1 has a symmetric design with respect to an axis of symmetry 14 . it is also designed for the connection of two continuous electrical conductors 5 . the connection terminal 1 of this embodiment differs from the embodiment of fig1 moreover in that the holding devices 31 in each case act directly together with the clamping device 33 associated with the same terminal connection 20 . for this purpose , in the home position , the clamping device 33 abuts against a first contact point 315 of the second arm 313 of the holding device 31 when the holding device 31 is in the open position . by rotating the holding device 31 in the direction of rotation 41 , the holding device is rotated to the closed position g . in order to secure the holding device 31 in the closed position g , the clamping device 33 , which is preferably a clamping screw , is shifted by rotating in the clamping direction 42 until it butts against a second contact point 316 of the second arm 313 of the holding device 31 . an advantage of this embodiment is that the clamping device 33 does not press against the electrical conductor 5 . in addition , the electrical conductor 5 is clamped between the connector body 2 and the first arm 312 of the holding device 31 . as a result , the terminal connection 20 of this embodiment can be used for electrical conductors 5 of different conductor cross sections . the two closure variants work with different conductor cross sections . in the embodiment of fig2 a and 2 b , the first arm 312 of a holding device 31 in the closed position g extends counter to the clamping direction 42 beyond the recess 21 . therefore , the connector body 2 contains an indention 25 in alignment with the receiving groove 22 for the holding device 31 into which the second arm 312 protrudes when the holding device is in the closed position g . an electrical conductor 5 inserted in the recess 21 in the closed position g is therefore surrounded over its entire periphery by the connector body 2 and the holding device 31 . in the embodiment of the connection terminal 1 shown in fig3 a - 3 c , only one of the conductor connections is designed in the form of a terminal connection 20 which is arranged here on the second side 12 of the connection terminal 1 . the connection terminal 1 further includes two conventional conductor connections 26 , which are formed , for example , as push - in connections . one of the two conductor connections 26 is arranged on the first side 11 of the connection terminal 1 and the other is arranged between the terminal connection 20 and the conductor connection 26 arranged on the first side 11 . the connection terminal 1 is therefore of asymmetric design . the conventional conductor connections 26 are in each case represented diagrammatically by a conductor connection opening 261 and a clamping screw 33 which is arranged in a bore 27 . the terminal connection 20 of this connection terminal 1 is similar to those of the connection terminal 1 described in connection with fig2 a and 2 b . fig3 b and 3 c show the collaboration of the clamping device 33 with the holding device 31 in the open position 0 and in the closed position g , respectively . fig3 b and 3 c show sections through the connector body 2 of the connection terminal 1 of fig3 a on the second side 12 . the rotary shaft or pin 32 extends in the extension direction 43 and the holding device 31 is fixed on the rotary shaft 32 . in order to close the recess 21 , the holding device 31 and the rotary shaft 32 are jointly rotated around the axis 4 until the first arm 312 of the holding device engages in the indentation 25 of the connector body 2 . the rotary shaft 32 is designed as a spring cotter pin . as a result , the cotter pin is self - retaining , even in the case of severe vibrations . while the preferred forms and embodiments of the invention have been illustrated and described , it will be apparent to those of ordinary skill in the art that various changes and modifications may be made without deviating from the inventive concepts set forth above .