The present disclosure provides a connector, which relates to the technical field of electrical connection devices, so as to solve the problem of poor connection stability of connectors in existing technologies. The connector includes a mounting base and a binding post, wherein the binding post has both sides symmetrically provided with a fixed fin, the mounting base defines thereon a mounting groove for mounting the binding post, two sides of the mounting groove define a limit groove, and the fixed fin is clamped in the limit groove so as to enable the binding post to be limited to the mounting groove. The connector according to the present disclosure has good connection stability and can effectively transmit current or signal, enabling an effective cooperation between connected devices.

A method and system for contact identification on a connector is provided. Specifically, a contact identification attachment to be affixed onto a connector may include an insert containing a plurality of cutouts and one or more indicators corresponding to the cutouts. The cutouts may correspond to the contacts on the connector. Using the indicators as aids, a user may connect proper wires to the proper contacts on the connector.

An interface circuit having releasable electrical connectors and as little as a single relay providing a standardized connection between panel controls intended for three-wire, two-wire or combination three-wire/two-wire control and a motor drive or motor controller. In this way, greatly simplified manufacturing of control cabinets may be provided with variations in control strategy being implemented simply by the provision of different panel controls having prewired harnesses and connectors.

The invention provides a connection head (40) for using with a supply cable for supplying power to a device, which device is within a housing. A first end (41) of the connection head is for mounting outside the housing of the device. A second end (43) of the connection head is for mounting inside the housing of the device. A closed loop antenna has at least one coil and a pair of feed lines, wherein the feed lines extend from the first end (41) to the second end (43), and the at least one coil is located within the first end (41). The connection head of the supply cable provides protection for an antenna and enables the antenna to be mounted outside the housing.

A method for implementing-a wiring on a matrix of conductor connection devices such as terminal conductor connection devices for connection of the ends of a conductor to at least one series terminal block uses at least one luminous element to identify conductor connection devices which are illuminated in the matrix directly or indirectly in accordance with a wiring diagram. The conductor connection devices that are illuminated by the luminous element and that are to be interconnected are connected to conductors, the ends of which are inserted in the conductor connection devices to establish a respective conducting wiring connection.

A cable enclosure includes a housing defining an opening through which an interior of the housing is accessible. An end plate is releasably secured to the housing to cover the opening such that the interior of the housing is not accessible. The end plate includes a first conductive leg in electrical communication with a first cable within the housing. The end plate also includes a second conductive leg in electrical communication with a second cable within the housing. The end plate further includes a conductive member movable between a first position and a second position. When in the first position, the conductive member is in contact with the first conductive leg and the second conductive leg. When in the second position, the conductive member is not in contact with at least one of the first conductive leg or the second conductive leg.

Labeling material for marking electrical installations, comprising a top layer, the top layer having a top surface which is designed for printing and a joining surface facing away from the top surface, comprising a foam layer, comprising at least one shaped element for form-fitting attachment to a receptacle, the foam layer comprising a foamed material, the foam layer being integrally bonded to the top layer in the region of the joining surface, and the shaped element being arranged at a spacing from the top layer.

Marking profile for identifying electrical installations, comprising a marking region which has a cover surface to be labeled, comprising a support region which adjoins the marking region on the opposite side of the cover surface, comprising at least one shaped element for interlockingly securing to a receiving section, wherein the marking profile has an extruded plastic profile or consists of an extruded plastic profile and wherein the plastic profile has a constant cross-section when viewed along its longitudinal extension.

The middle section and the tail section are mounted in a wire inlet of a terminal device. The aid sleeve is formed with an internal guide hole. A wire collection section is disposed on one side of the head section distal from the middle section. A recessed guide channel is disposed on one side of the wire collection section proximal to the guide hole. The recessed guide channel includes two lateral outer arched channels with larger curvature radius. The two lateral outer arched channels gradually extend toward a middle bottom face to form an inner arched channel with smaller curvature radius. The recessed guide channel can gradually bind the forked conductor end section of a multi-strand conductive wire, whereby the wire can be quickly plugged into the guide hole.

A test system and method for relay connection and testing of a power transmission and distribution grid including a fixed connection block connected to the power transmission and distribution grid, and a mobile plug which connects the fixed connection block or a mobile test block with the relay when the mobile plug is inserted into the fixed connection block or the mobile test block. The mobile test block provides a connection to an external relay testing device when the mobile test plug is inserted into the mobile test block, the fixed connection block provides internal shorting that is activated when the mobile plug is not inserted into the fixed connection block and is deactivated when the mobile plug is inserted into the fixed connection block, and the fixed connection block, mobile plug, and the mobile test block provides an interaction between a power transmission and distribution grid side and a relay side. This allows a quick recovery when relays are damaged in a cyber-attack.