Electrical connector, comprising a first connection element and a second connection element, complementary to the first connection element, the two connection elements (100, 200) being able to be coupled to one another according to a coupling axis (X3-X3), the first and the second connection element comprising: - at least one pin (108, 112, 114) carried by the first element or the second element and at least one respective contact (208, 212, 214) carried by the second element or the first element, - a bayonet-type locking mechanism (104, 218) of the connector comprising at least one locking pin arranged on a body of the first connection element and at least one locking ring mounted rotatingly around a body of the second connection element and comprising a locking groove with an outlet and a locking notch wherein the locking pin is able to be locked axially in relation to the body of the second connection element. - means for indexing (106, 204), making it possible to position the body of the first element and the body of the second connection element, one in relation to the other around the coupling axis (X3-X3) in an indexed configuration which intervenes, during coupling, before the engagement of the locking pin in the locking groove, characterised - in that the second connection element comprises a safety ring mounted mobile in axial translation in relation to the locking ring, and comprising at least one safety catch, - in that the safety ring is able to be pushed back by the locking pin during coupling between, a first position wherein the safety catch blocks the passage of the pin between the locking notch and the outlet, and a second position wherein the safety catch authorises the passage of the pin, the safety ring being drawn back elastically to its first position, - in that each locking groove comprises at the front, a chamfer (2362, 2364) delimiting said outlet, and - in that the rotation range (γ232) of the locking ring in relation to the body of the second connection element around the coupling axis (X3-X3) is limited, and - in that in the indexed configuration of the bodies and of the first and second elements (100, 200), the axis of travel (X4-X4) of the pin intersects said outlet of the locking groove over the entire rotation range (γ232) of the locking ring. - at least one pin (108, 112, 114) carried by the first element or the second element and at least one respective contact (208, 212, 214) carried by the second element or the first element, - a bayonet-type locking mechanism (104, 218) of the connector comprising at least one locking pin arranged on a body of the first connection element and at least one locking ring mounted rotatingly around a body of the second connection element and comprising a locking groove with an outlet and a locking notch wherein the locking pin is able to be locked axially in relation to the body of the second connection element. - means for indexing (106, 204), making it possible to position the body of the first element and the body of the second connection element, one in relation to the other around the coupling axis (X3-X3) in an indexed configuration which intervenes, during coupling, before the engagement of the locking pin in the locking groove, characterised - in that the second connection element comprises a safety ring mounted mobile in axial translation in relation to the locking ring, and comprising at least one safety catch, - in that the safety ring is able to be pushed back by the locking pin during coupling between, a first position wherein the safety catch blocks the passage of the pin between the locking notch and the outlet, and a second position wherein the safety catch authorises the passage of the pin, the safety ring being drawn back elastically to its first position, - in that each locking groove comprises at the front, a chamfer (2362, 2364) delimiting said outlet, and - in that the rotation range (γ232) of the locking ring in relation to the body of the second connection element around the coupling axis (X3-X3) is limited, and - in that in the indexed configuration of the bodies and of the first and second elements (100, 200), the axis of travel (X4-X4) of the pin intersects said outlet of the locking groove over the entire rotation range (γ232) of the locking ring.