Abstract: A terminal block equipped with connection parts which avoid the necessity of stripping the connecting wires. The terminal block (1) has a groove (13) inside which is accommodated firstly at least one connection part (3) whose lips (30, 30') form an automatic stripping and blocking slot in the axis of the groove and secondly a pusher (2) which can be manipulated from the outside and can move in translation in the groove (13) between a partial interpenetration position with the part (3) and a position allowing the insertion of suitable wire (4) between said pushing piece and the part (3). The invention relates to electric connection and more particularly to the connection of energy distribution wires.