Electrical connecting element

An electrical element for connecting an electrically insulated end of a wire, comprising a clamping sleeve in which an end of a wire is insertable and clampable;

• an insulation sleeve connectable with said clamping sleeve and provided with a connecting contact arranged so that, during a connection of said clamping sleeve with said insulation sleeve and said connecting contact of said insulation sleeve is brought into contact with an end of a wire with removal of an insulation of the wire;
• and an arresting clamping ring which connects said clamping sleeve with said insulation sleeve to prevent an unintentional loosening, said clamping ring having an inner side provided with at least one arresting hook, said insulation sleeve having an inner side provided with a peripheral bead and at least one axially oriented web which forms an abutment for said at least one arresting hook when said clamping sleeve together with said arresting clamping ring is screwed into said insulation sleeve, so that said at least one arresting hook is non-releasably arrestable over said peripheral bead and thereby prevents unscrewing of said clamping sleeve and said insulation sleeve.