Abstract: An electric terminal block having a block housing, two conductor connection elements, two current bars, and two additional current bar pieces. Each current bar has a connection portion, and first and second contact portions, each connection portion being paired with a conductor connection element. To obtain a reliable switching sequence when plugging and unplugging an operating or test plug, the terminal housing is equipped with two spring elements, each of which has a connection portion and an elastic contact portion; each of the spring elements is electrically connected to one of the current bar pieces; the contact portions together form a second contact region for receiving the plug, and being mutually spaced when the plug is not plugged in. The contact region of the spring elements is arranged in front of the contact region of the current bars in the plug-in direction of the plug.

Abstract: An electric terminal block having a block housing, two conductor connection elements, two current bars, and two additional current bar pieces. Each current bar has a connection portion, and first and second contact portions, each connection portion being paired with a conductor connection element. To obtain a reliable switching sequence when plugging and unplugging an operating or test plug, the terminal housing is equipped with two spring elements, each of which has a connection portion and an elastic contact portion; each of the spring elements is electrically connected to one of the current bar pieces; the contact portions together form a second contact region for receiving the plug, and being mutually spaced when the plug is not plugged in. The contact region of the spring elements is arranged in front of the contact region of the current bars in the plug-in direction of the plug.

Abstract: A connection terminal having a terminal housing for securing a terminal block arrangement having a plurality of terminal blocks in a wall opening of a housing wall, and a construction unit having two connection terminals and a terminal block arrangement that are formed of a plurality of adjacently arranged terminal blocks. The connection terminal enables the terminal blocks and/or the terminal block arrangement to be mounted and/or dismounted from one side in a wall opening of a housing wall by displaceably arranging a securing element in the terminal housing, the securing element having a terminal bevel that protrudes through an opening in the terminal housing, and by movably disposing the securing element with the aid of an actuation element into a terminal position in which the terminal bevel acts against an inner edge of the wall opening in the mounted state of the connection terminal.

Abstract: A terminal strip for latching onto a mounting rail includes a terminal housing that has a first connection side and a second connection side and a busbar arranged in the terminal housing. At least two conductor connection elements are arranged in the terminal housing. The conductor connection elements each connect at least one conductor to the busbar. Each conductor connection element has a first function shaft having at least one plug-in connection receiving region and at least a second function shaft having at least one screw-connection receiving region arranged on each of the two connection sides of the terminal housing. One connection region is formed for each plug-connection receiving region and for each screw-connection receiving region in the busbar. The function shafts of one connection side are arranged in a manner spaced apart from one another.

Abstract: A terminal strip for latching onto a mounting rail includes a terminal housing that has a first connection side and a second connection side and a busbar arranged in the terminal housing. At least two conductor connection elements are arranged in the terminal housing. The conductor connection elements each connect at least one conductor to the busbar. Each conductor connection element has a first function shaft having at least one plug-in connection receiving region and at least a second function shaft having at least one screw-connection receiving region arranged on each of the two connection sides of the terminal housing. One connection region is formed for each plug-connection receiving region and for each screw-connection receiving region in the busbar. The function shafts of one connection side are arranged in a manner spaced apart from one another.

Abstract: A connection terminal having a terminal housing for securing a terminal block arrangement having a plurality of terminal blocks in a wall opening of a housing wall, and a construction unit having two connection terminals and a terminal block arrangement that are formed of a plurality of adjacently arranged terminal blocks. The connection terminal enables the terminal blocks and/or the terminal block arrangement to be mounted and/or dismounted from one side in a wall opening of a housing wall by displaceably arranging a securing element in the terminal housing, the securing element having a terminal bevel that protrudes through an opening in the terminal housing, and by movably disposing the securing element with the aid of an actuation element into a terminal position in which the terminal bevel acts against an inner edge of the wall opening in the mounted state of the connection terminal.