Electrical wiring devices that incorporate screwless wire terminal connections are described. The electrical wiring devices include for example, single and duplex blade-type electrical receptacles, blade-type locking electrical receptacles, single or multi-pole electrical switches, combination switches and blade-type receptacles, blade-type plugs for electrical cords, blade-type connectors for electrical cords, male and female inlet connectors and pin-in-sleeve connectors. The electrical wiring devices include a plurality of contact assemblies having a horizontally moving or rotating activating member that permits wires to be inserted into or removed from the contact assemblies.

A cover element for covering a spring-loaded clamping device which can be connected to a printed circuit board. A connecting section connects the cover element with a connecting section of the spring-loaded clamping device and a cover portion covers a conductor mount of the spring-loaded clamping device. The cover portion has an opening channel for form-fitting and/or force-fit mounting of a connecting strand, through which a conductor of the connecting strand can be guided and inserted into the conductor mount of the spring-loaded clamping device. A clamping system and a method for manufacturing the cover element are also provided.

A modular I/O device includes a terminal base with a terminal block that includes a plurality of wiring connectors. An auxiliary wiring device includes a plurality of auxiliary wiring connectors and is selectively physically connectable to the terminal base in an operative position and selectively physically removable from the terminal base. The terminal block includes a receiver and the auxiliary wiring device includes a body including at least one mounting tab that projects outwardly from the body and that is located in the receiver. The receiver includes a projecting lip about which the auxiliary wiring device is pivotable relative to the receiver on a pivot axis. The terminal base includes at least one catch and the auxiliary wiring device further includes at least one latch arm that is adapted to engage the catch when the auxiliary wiring device is physically connected to said terminal base in its operative position.

A terminal block includes an insulating casing defining a recess receiving a conductive bar and a retaining spring. The conductive bar includes a base portion, a support leg attached to the base portion and a cooperating leg attached to the base portion. In a mounted position of the conductive bar and the retaining spring within the recess, the support leg engages with a support part of the retaining spring, and the cooperating leg is positioned to engage with a conductor inserted into a plug of the terminal block.

A holding and contacting device is disclosed. In an embodiment a holding and contacting device includes a cage defining a cable path through the cage and a spring element protruding into the cable path and configured to apply a clamping force onto a cable placed along the cable path, wherein the spring element and the cage comprise a metal.

A modular I/O device includes a terminal base with a terminal block that includes a plurality of wiring connectors. An auxiliary wiring device includes a plurality of auxiliary wiring connectors and is selectively physically connectable to the terminal base in an operative position and selectively physically removable from the terminal base. The terminal block includes a receiver and the auxiliary wiring device includes a body including at least one mounting tab that projects outwardly from the body and that is located in the receiver. The receiver includes a projecting lip about which the auxiliary wiring device is pivotable relative to the receiver on a pivot axis. The terminal base includes at least one catch and the auxiliary wiring device further includes at least one latch arm that is adapted to engage the catch when the auxiliary wiring device is physically connected to said terminal base in its operative position.

Electric switchboard terminal block having a body (310) extending in a lengthwise longitudinal direction (X-X), widthwise transverse direction (Y-Y) and heightwise vertical direction (Z-Z), and comprising a front face (310a) and lateral flanks (310b) situated opposite each other in the longitudinal direction (X-X), each flank having a first seat (320) for housing a label (30), and comprising a recess (330) with a substantially trapezium-like vertical cross-section arranged in a central position in the longitudinal direction (X-X) and having a greater base open on the front face (310a) of the terminal block and smaller base open towards the inside thereof, said recess (330) having at least one further seat (331;333) for housing at least one additional label (30).

A pushbutton-equipped patch cord connecting metal terminal is disclosed. The metal terminal has a base on which weld legs are formed. The base has its front part bent backward to form an arc-shaped resilient portion. The arc-shaped resilient portion has its tail end extending backward to form a tilted resilient arm that points the upper rear of the metal terminal. A pushbutton is formed at a lateral of the resilient arm. Also provided is a patch cord connector is composed of the metal terminal and a housing seat. The metal terminal and the connector are structurally simple and easy to use, while ensuring good electrical connection to a patch cord as well as convenient repeated plugging and unplugging of the patch cord.

A wire plug-in aid sleeve structure for wire connection terminal is assembled in a wire plug-in hole of the terminal. The aid sleeve includes a head section, a belly section connected with the head section and a tail section connected with the belly section. The head section, the belly section and the tail section together define a guide hole for the conductive wire to plug in. The tail section has a first side and a second side positioned on a peripheral section of the guide hole. After the conductive wire passes through the guide hole into the terminal, the metal leaf spring disposed in the terminal is facilitated to press the conductive wire toward the first side or second side.

A contacting device for contacting an electrical conductor to an electrical conductor track includes a housing having openings for inserting the conductor and the conductor track into a cavity. A contact clip is in the cavity, and is a single element that includes a first portion having an end to press the conductor onto the conductor track, and a second portion from which a protrusion protrudes. The contact clip is bent in the cavity so that the first portion is under bending stress and the end of the first portion is pressed against the protrusion. The second portion is arranged in the housing such that it and the protrusion are displaced when a force acts on the second portion, as a result of which the end of the first portion is released from abutting the protrusion and is pressed against the conductor to hold the conductor on the conductor track.