A power supply circuit breaking device includes a first connector housing, a second connector housing, a main lock unit locking in a finally fitted state in which the second connector housing is completely fitted to the first connector housing, a sub-lock unit locking in a temporarily fitted state in which a part of the second connector housing is fitted to the first connector housing, a main switch unit switched on in the finally fitted state and the temporarily fitted state, and a sub-switch unit switched on in the finally fitted state and switched off in the temporarily fitted state. The sub-lock unit includes a sub-lock claw formed in the first connecter housing, and an operation portion provided in the second connector housing and having an engaging plate portion engaged with the sub-lock claw in the temporarily fitted state.

A lever (24) mounted on a male housing (10) is formed with a connecting cam surface (29) capable of pressing a cam pin (41) of a female housing (40) while being kept out of contact with cam projections (23) in the process of rotating the lever (24) from an initial position to a connection position, and the lever (24) is formed with an escaping space (31). In the process of rotating the lever (24) from the initial position to the connection position in a state where the male housing (10) and the female housing (40) are separated and the moving plate (18) is at a protecting position, the cam projections (23) of the moving plate (18) are accommodated into the escaping space (31) while being kept out of contact with the connecting cam surface (29).

A lever (24) mounted on a male housing (10) is formed with a connecting cam surface (29) capable of pressing a cam pin (41) of a female housing (40) while being kept out of contact with cam projections (23) in the process of rotating the lever (24) from an initial position to a connection position, and the lever (24) is formed with an escaping space (31). In the process of rotating the lever (24) from the initial position to the connection position in a state where the male housing (10) and the female housing (40) are separated and the moving plate (18) is at a protecting position, the cam projections (23) of the moving plate (18) are accommodated into the escaping space (31) while being kept out of contact with the connecting cam surface (29).

The invention teaches how to establish 1 to 1 connection between a first group of n electrical signals to a second group of n electrical signals. A first connector half with a first group of n1 contacts equally spaced around a circle and a second connector half with a second group n2 connectors, also equally spaced around a circle, with n11=n2n. The angular extent of the individual contacts from the first group is e1, and that from the second group is e2. The angular extent of the gap between individual contacts from the second group is g2. Following relationship must be satisfied: e1<g2 and e2>(360/n1e1). A switch interconnect means for connecting arbitrarily selected n contacts out of a first group of n1 contacts where (n11)n to n signals from a first group of n signals. The minimum number of signals required for doing this is n+(n1n)*n. A single pole switch is connected from each of the n signals from the first group to each of the n arbitrarily selected contacts from the first group of n1 contacts. Each of the remaining n1n contacts from first group, is connected to one end of a group of n switches. The other end of each switch from this group of switches is connected to each of the n signals from second group.

The invention teaches how to establish 1 to 1 connection between a first group of n electrical signals to a second group of n electrical signals. A first connector half with a first group of n1 contacts equally spaced around a circle and a second connector half with a second group n2 connectors, also equally spaced around a circle, with n11=n2n. The angular extent of the individual contacts from the first group is e1, and that from the second group is e2. The angular extent of the gap between individual contacts from the second group is g2. Following relationship must be satisfied: e1<g2 and e2>(360/n1e1). A switch interconnect means for connecting arbitrarily selected n contacts out of a first group of n1 contacts where (n11)n to n signals from a first group of n signals. The minimum number of signals required for doing this is n+(n1n)*n. A single pole switch is connected from each of the n signals from the first group to each of the n arbitrarily selected contacts from the first group of n1 contacts. Each of the remaining n1n contacts from first group, is connected to one end of a group of n switches. The other end of each switch from this group of switches is connected to each of the n signals from second group.

A cable connector includes a first plug, a second plug opposite the first plug, a cable connected with the first plug and second plug, and a LED light located in the first plug or the second plug, wherein the cable is provided with a braid layer located at the outermost side of the cable, the braid layer is composed of metal enameled wire mixed fibers, and the cable causes the LED light to be illuminated by capacitive sensing through proximity.

A system (1, 100) with socket (20, 120)/plug (10, 110) is described, designed to prevent access to the electrical phase contacts (32, 132) and neutral contacts (33, 133) of the socket (10, 120) when the plug (10, 110) is not inserted in the socket (20, 120), and designed to ensure a phase to phase and neutral to neutral connection, in which, inside the socket (20, 120) there is a contact holder element (30) which, following the insertion of the plug (10, 110), retracts and interacts with a system of inclined guides (25) obtained in a structural rear part (24, 124) of the socket (20, 120), causing a transversal movement of the electrical phase contacts (32, 132) and neutral contacts (33, 133), able to make a connection with the corresponding electrical phase contacts (13, 113) and neutral contacts (14, 114) present on the plug (10, 110).

A system (1, 100) with socket (20, 120)/plug (10, 110) is described, designed to prevent access to the electrical phase contacts (32, 132) and neutral contacts (33, 133) of the socket (10, 120) when the plug (10, 110) is not inserted in the socket (20, 120), and designed to ensure a phase to phase and neutral to neutral connection, in which, inside the socket (20, 120) there is a contact holder element (30) which, following the insertion of the plug (10, 110), retracts and interacts with a system of inclined guides (25) obtained in a structural rear part (24, 124) of the socket (20, 120), causing a transversal movement of the electrical phase contacts (32, 132) and neutral contacts (33, 133), able to make a connection with the corresponding electrical phase contacts (13, 113) and neutral contacts (14, 114) present on the plug (10, 110).

A short-canceling projection (35) has a support (36) and two plate-shaped insulating parts (37). With housings (10, 30) mated, the support (36) partitions two elastic contact pieces (24) of a short terminal (22). Plate-shaped insulating portions (37) protrude in opposite directions relative to the support (36), and, with the housings (10, 30) mated, enter between two female terminal fittings (12) and the elastic contact pieces (24) and cancel shorting between the female terminal fittings (12). Correction parts (41, 42, 43) are formed on the support (36) and the plate-shaped insulating portions (37) and make contact with the first housing (10) to displace the short-canceling projection (35) in the direction of approaching the short terminal (22).

A short-canceling projection (35) has a support (36) and two plate-shaped insulating parts (37). With housings (10, 30) mated, the support (36) partitions two elastic contact pieces (24) of a short terminal (22). Plate-shaped insulating portions (37) protrude in opposite directions relative to the support (36), and, with the housings (10, 30) mated, enter between two female terminal fittings (12) and the elastic contact pieces (24) and cancel shorting between the female terminal fittings (12). Correction parts (41, 42, 43) are formed on the support (36) and the plate-shaped insulating portions (37) and make contact with the first housing (10) to displace the short-canceling projection (35) in the direction of approaching the short terminal (22).