An electrical adapter includes a post portion, an electrical terminal, and a cover. The electrical terminal extends from the post portion. The cover is slideably engaged with the post portion to selectively shield the electrical terminal.

Receptacles are provided for mating with plugs to establish electrical connections. The receptacles include a shell having a body, and a flange attached to the body. The flange has a projection extending therefrom. The receptacle also has an electrically-insulating insert positioned at least in part within the body; and one or more electrical contacts positioned at least in part within the insert. The receptacle is configured for mounting on a panel. The projection contacts a mounting surface of the panel, to establish a localized contact area that provides bonding between the receptacle and panel.

A waterproof electrical connector system enables quick and easy coupling of a first and second housing to electrically connect a first and second electrical cable connected thereto. The electrical cables extend into a fixed portion of the housings and are electrically coupled with a bridging connector that is configured in a rotating portion of the housing. The assembly of the first and second housings has a latch and latch extension that can be moved along a radial portion of a latch channel to a circumferential portion of the latch channel to enable the rotating portions of the housings to be rotated. Upon rotating the rotating portions, the electrical cables are electrically connected by the bridging connector. The two housings may be substantially the same, having the same components and the same geometry. Each housing may have an inner and outer latch channel and latch interface, making operation quick and easy.

A control attachment configured to provide power to a load is described. The control attachment may comprise a first plurality of contact elements configured to be coupled to a power adapter; a plurality of openings on a first surface and having a second plurality of contact elements configured to receive a power signal and a neutral signal, wherein the plurality of openings are adapted to receive prongs of a plug; and a transformer coupled to receive the power signal and generate a low voltage signal; wherein the second plurality of contact elements is coupled to the first plurality of contact elements.

A connector includes: a plurality of conductors; a magnetic core; a housing; and an insulator that locates a core assembling portion therein, the core assembling portion being composed of the respective intermediate portions of the plurality of conductors and the magnetic core, the housing chamber is at least partitioned into a first space in which the core assembling portion is housed and a second space in which the first electrical connection portion and the first counterpart conductor side are housed and are physically and electrically connected to each other, and the insulator is a solidified material of a liquid insulating potting agent filled in the vicinity of the core assembling portion in the first space in order to cover the core assembling portion.

An apparatus for locking air hose couplings together, such apparatus including flexible inserts wherein the apparatus is configured for holding and locking air hose couplings of different sizes. A method of locking air hose couplings together using an apparatus for locking air hose couplings together, such apparatus including flexible inserts wherein the apparatus is configured for holding and locking air hose couplings of different sizes.

A rotatable electric plug includes a plug housing including a sleeve body, a plug module including a mounting body and at least a protruding pin, and a limiting assembly coupled to the sleeve body and the mounting body. The mounting body is rotatably coupled in the sleeve body that a rotational movement of the mounting body is reversible. The mounting body has a first side and an opposed second side that a portion of the protruding pin is extended from the first side of the mounting body. The limiting assembly is arranged to block the plug module from rotating infinitely at the plug housing in one direction. The rotatable electric plug has the advantages of enabling the reversibly rotational movement of the plug module, enhancing the rotational movement of the plug module, retaining the plug module at an angular angle, and preventing the plug module from being infinitely rotated.

A connection apparatus .[.comprises.]. .Iadd.includes: .Iaddend.a platform.[.,.]..Iadd.; .Iaddend.a plug connector having a plug connector part secured to the platform and electrically connected to the circuit of the field device and a plug connector part connectable with .[.the.]. .Iadd.a .Iaddend.connection cable and complementary to the first plug connector part.[., as well as.]..Iadd.; and .Iaddend.a lid .[.held movably.]. .Iadd.moveable .Iaddend.relative to the platform for at least partially covering the plug connector.[.formed by connecting the plug connector parts.].. The lid is swingable between a first end position, in which the lid at least partially covers the plug connector, and a second end position, and is .[.additionally.]. adapted in .[.at least one.]. .Iadd.an .Iaddend.open position located between the first end position and the second end position to expose the plug connector such that the plug connector part can be separated from the plug connector part, .[.as well as.]. .Iadd.and, .Iaddend.at least in the first end position.Iadd., .Iaddend.to secure the plug connector part connected with the plug connector part.

An apparatus for locking three-phase electrical connectors together. An apparatus for locking three-phase electrical connectors together, such apparatus including flexible inserts wherein the apparatus is configured for holding and locking three-phase electrical connectors of different sizes. A method of locking three-phase electrical connectors together using an apparatus for locking three-phase electrical connectors together.

A connector to be connected to another connector includes a fixed contact, a movable contact, a housing having an opening into which the other connector is insertable, a switch that is movable in a direction in which the other connector is inserted, a cam that is rotatably supported and includes a first cam and a second cam, and a card that moves the movable contact. The connector is configured such that when the other connector is inserted into the connector, the switch is pushed and moved by the other connector, the first cam is pushed by the switch and the cam rotates, the second cam pushes the card when the cam rotates, and the card moves the movable contact to contact the fixed contact.