Abstract: In a method for the determination of an electrical contact property in a contact region between a first contact element of a first plug device and a second complementary contact element of a second plug device, a property of a current path including the first contact element, the contact region, and from the second plug device only the second contact element is evaluated and an induction voltage is generated in the current path for a measurement in the current path to thereby enable to draw a conclusion about the electrical contact property.

Abstract: In a method for the determination of an electrical contact property in a contact region between a first contact element of a first plug device and a second complementary contact element of a second plug device, a property of a current path including the first contact element, the contact region, and from the second plug device only the second contact element is evaluated and an induction voltage is generated in the current path for a measurement in the current path to thereby enable to draw a conclusion about the electrical contact property.

Abstract: A multi-pole plug assembly, in which the positions of a first contact element and a second contact element can be exchanged by means of a turning device is disclosed. The first and second contact elements can be different in terms of their plugging compatibility, for example, in that they are configured as contact pins of different diameters. In addition or alternatively, the first contact element can be connected to an outer conductor, and the second contact element can be connected to a protective conductor or a neutral conductor. The plug assembly can be embodied as a four-pole plug and configured in such a way that the first and second contact pins can adopt the positions 3h and 6h (or vice versa) in relation to a distinctive nose. Within the scope of DIN Standard EN 60309-2, two electrically similar configurations can be realized in this way.

Abstract: A plug-and-socket device includes a plug pin, and a contact sleeve having a cavity extending in a direction of an insertion axis for receiving the plug pin. The contact sleeve includes at least two contact fingers arranged in parallel relationship to one another around the cavity and configured to move elastically apart while expanding the cavity when the plug pin is inserted. At least one of the at least two contact fingers is formed on an inner side in facing relation to the cavity with at least one depression which lies in a contact surface on the inner side and defines with the contact surface an edge angle of less than approx. 100°. The contact surface represents on the inner side of the contact finger a surface which comes into contact with the plug pin, when the plug pin is inserted.

Abstract: A multi-pole plug assembly, in which the positions of a first contact element and a second contact element can be exchanged by means of a turning device is disclosed. The first and second contact elements can be different in terms of their plugging compatibility, for example, in that they are configured as contact pins of different diameters. In addition or alternatively, the first contact element can be connected to an outer conductor, and the second contact element can be connected to a protective conductor or a neutral conductor. The plug assembly can be embodied as a four-pole plug and configured in such a way that the first and second contact pins can adopt the positions 3h and 6h (or vice versa) in relation to a distinctive nose. Within the scope of DIN Standard EN 60309-2, two electrically similar configurations can be realized in this way.

Abstract: A plug-and-socket device includes a plug pin, and a contact sleeve having a cavity extending in a direction of an insertion axis for receiving the plug pin. The contact sleeve includes at least two contact fingers arranged in parallel relationship to one another around the cavity and configured to move elastically apart while expanding the cavity when the plug pin is inserted. At least one of the at least two contact fingers is formed on an inner side in facing relation to the cavity with at least one depression which lies in a contact surface on the inner side and defines with the contact surface an edge angle of less than approx. 100°. The contact surface represents on the inner side of the contact finger a surface which comes into contact with the plug pin, when the plug pin is inserted.

Abstract: A plug-in device system has a closure unit blocking access to a first plug-in device element, for example a socket. The closure unit includes a rotary bezel which is coupled via a coupling to at least one shutter such that the rotation of the bezel effects a movement of the shutter from a closed position in an open position. Preferably, a locking assembly is additionally provided, which blocks movement of the rotary bezel and/or shutter in the closed position as long as no pressure is applied to the shutter. In addition, a safety device can be provided, which prevents the shutter from opening when a direct force is applied.

Abstract: A plug-in device system has a closure unit blocking access to a first plug-in device element, for example a socket. The closure unit includes a rotary bezel which is coupled via a coupling to at least one shutter such that the rotation of the bezel effects a movement of the shutter from a closed position in an open position. Preferably, a locking assembly is additionally provided, which blocks movement of the rotary bezel and/or shutter in the closed position as long as no pressure is applied to the shutter. In addition, a safety device can be provided, which prevents the shutter from opening when a direct force is applied.

Abstract: A plug-in device system has a closure unit blocking access to a first plug-in device element, for example a socket. The closure unit includes a rotary bezel which is coupled via a coupling to at least one shutter such that the rotation of the bezel effects a movement of the shutter from a closed position in an open position. Preferably, a locking assembly is additionally provided, which blocks movement of the rotary bezel and/or shutter in the closed position as long as no pressure is applied to the shutter. In addition, a safety device can be provided, which prevents the shutter from opening when a direct force is applied.

Abstract: An electrical plug device has a contact module in which a complimentary plug device element can be inserted from an access site along a insertion axis. The plug device includes a closure unit having one or more cover elements which move from a rest position to an open position when the complimentary plug device element is inserted. The cover elements may have sloped guide surfaces and can be radially urged apart from each other.

Abstract: An electrical plug device has a contact module in which a complimentary plug device element can be inserted from an access site along a insertion axis. The plug device includes a closure unit having one or more cover elements which move from a rest position to an open position when the complimentary plug device element is inserted. The cover elements may have sloped guide surfaces and can be radially urged apart from each other.

Abstract: A plug assembly with strain relief includes a housing and a clamping basket which has radially movable clamping fingers. The clamping basket defines an axis and is constructed to allow insertion of a cable into the housing in a direction of the axis. A rotary sleeve is supported on the housing for rotation but substantially fixed in an axial position with respect to the housing. The rotary sleeve is hereby configured to move an element (e.g. the clamping basket itself, or a pinch ring) in the axial direction, when rotated, to thereby modify a radial position of the clamping fingers.

Abstract: A plug assembly with strain relief includes a housing and a clamping basket which has radially movable clamping fingers. The clamping basket defines an axis and is constructed to allow insertion of a cable into the housing in a direction of the axis. A rotary sleeve is supported on the housing for rotation but substantially fixed in an axial position with respect to the housing. The rotary sleeve is hereby configured to move an element (e.g. the clamping basket itself or a pinch ring) in the axial direction, when rotated, to thereby modify a radial position of the clamping fingers.