TERMINAL BLOCK

The invention relates to a terminal block (100) having an insulating material housing (10), which has a first connection plane (11a, 11b, 11c, 11d) and at least one second connection plane (11a, 11b, 11c, 11d), wherein a bus bar (12a, 12b, 12c, 12d) and two conductor connection units (13a', 13a'', 13b', 13b'', 13c', 13c'', 13d', 13d''), which are arranged opposite each other and connected to the bus bar (12a, 12b, 12c, 12d) in an electrically contacting manner, are arranged in each connection plane (11a, 11b, 11c, 11d), wherein at least one test plug opening (22) for receiving a test plug (200) is designed in the insulating material housing (10), wherein the test plug opening (22) is arranged between a conductor connection unit (13a', 13a'', 13b', 13b'', 13c', 13c'', 13d', 13d'') of the first connection plane (11a, 11b, 11c, 11d) and a conductor connection unit (13a', 13a'', 13b', 13b'', 13c', 13c'', 13d', 13d'') of the second connection plane (11a, 11b, 11c, 11d) arranged adjacent thereto.