Abstract: A connection arrangement which includes a conducting slotted connection part (3) fixed in a recess in an insulating housing (5) is provided with fixing means (52, 53) enabling a connection tool (6) to be positioned and fixed relative to the housing during a connection operation. The connection tool (6) includes bearing means (72, 73) enabling it to be positioned on the housing and a rigid wire inserting blade (60) which penetrates into the housing along the slot via a tool insertion orifice (51). A rigid insertion blade (60) co-operates with two flexible blades (62) in order to fix the tool in the insertion orifice (51).