| 主权项 |
1. A switchboard base terminal block for connecting electrical wires (2,2a) comprising
an insulating body (10) formed by a substantially closed-ring frame (11) and configured so as to define at least one top side (11a) and a bottom side opposite in a vertical direction (Z-Z), and at least two respective flanks (11b) opposite in a longitudinal direction (X-X); wherein inside the body (10) there is formed at least:
a first pair of seats (12) situated outermost in the longitudinal direction (X-X) towards the flanks (11b) and open in a transverse direction (Y-Y) of width of the terminal block, for housing means (50) for retaining wires (2), and during use communicating with the exterior via a first respective opening (12a) extending in the vertical direction (Z-Z) from the top wall (11a) of the frame (11); anda first space (14) centred on a central vertical axis (Z-Z) and bounded in the longitudinal direction (X-X) by respective first partitions (14a) extending parallel to the vertical direction (Z-Z) and vertically interrupted along a heightwise section so as to allow insertion, in the transverse direction (Y-Y), of a conductor lamina (20) for restoring the electrical continuity between the wires (2),wherein said first partitions (14a) are spaced from each other in the longitudinal direction (X-X) by an amount such as to define a size of the space suitable for housing a jumper (30) of the screw type (32); an undercut (16) with base (16a) formed in the top side (11a) of the terminal block, said undercut having a first central opening (16b) for connecting with the exterior the central space (14) for insertion of the respective screw jumper (30), and means (19,19a;14c) for coupling with corresponding means (119,119a;224c) of an add-on terminal block for forming a two-tier terminal block in the vertical direction (Z-Z), wherein said coupling means are adapted for determining a stable and non-decouplable along the vertical direction coupling with corresponding coupling means of the add-on terminal block. |
