An assembly is provided for a connector of an electrical wiring device having a base with a plurality of electrical terminals having a connecting screw. The assembly includes a plurality of terminal connector with a base extending from the first end and having a screw hole for coupling to one of the electrical terminals by a connecting screw. The leg has a screw hole receiving a coupling screw for electrically connecting a wire to the terminal connector and the terminal of the electrical wiring device. A clamping member receives the coupling screw for clamping the wire between the leg and clamping member. A cover encloses the terminal connectors and includes one or more apertures directing a wire through the cover to the terminal connector assembly to clamp the wire in place Access openings are provided in a wall of the cover to access the coupling screws for clamping wires to the terminal connector assembly.

Touch-protected contact part for connecting battery modules configured to be connected with a mating contact part in a plugging direction includes a contact element made from a first material, a connection element that penetrates the contact element and that is electro-conductively connected with the contact element, and a contact housing that holds the contact element and the connection element; wherein the connection element is held in the contact housing in a plugging position, in which the connection element protrudes from the contact element in the plugging direction, and the part of the connection element penetrating the contact element and protruding from the contact element is made from a second material that has a greater electrical resistance than the electrical resistance of the first material.

A fixing bolt for fixing a stranded conductor wire has a tapered section extending along a central axis direction of the fixing bolt. The tapered section establishes an electrical contact with the stranded conductor wire. A first portion of the tapered section is an arched cone frustum that is arched with respect to the central axis direction.

A break-off bolt for securing a conductor within a connector includes a first thread section, a second thread section and a torque-limiting section arranged between the first thread section and the second thread section. The first thread section and the second thread section comprise the same external thread having a minor diameter. The torque-limiting section has at least one of no thread with an outer diameter larger than the minor diameter of the external thread or an external thread having a minor diameter larger than the minor diameter of the external thread of the first and second thread sections.

A terminal connection structure includes: a first connector including a first terminal; a second connector including a second terminal electrically connected to the first terminal; and a fastener configured to fasten the first terminal and the second terminal. The first connector includes a first opening and a protruding portion. The second connector includes a second opening configured to expose a second contact portion of the second terminal and an inserted portion of the second terminal. The fastener includes a bolt and a thickness adjustment portion sandwiched between a contact location between the first contact portion and the second contact portion and a seat surface portion of the bolt, and fastens the first terminal and the second terminal in a state in which the first connector and the second connector are fitted to each other, in which the protruding portion is inserted into the inserted portion.

A terminal connection structure includes: a first connector including a first terminal; a second connector including a second terminal; and a fastener configured to fasten the first terminal and the second terminal. The first connector includes a first opening configured to expose a first contact portion of the first terminal, and a protruding portion protruding toward the second connector. The second connector includes a second opening configured to expose a second contact portion of the second terminal and an inserted portion of the second terminal. The fastener fastens the first terminal and the second terminal in a state in which the first connector and the second connector are fitted to each other, in which the protruding portion is inserted into the inserted portion, and in which the first contact portion and the second contact portion are in contact with each other.

An electrical terminal includes a first terminal cap, a second terminal cap, a blind-hole nut, a socket, first terminal barrel, and a threaded stud. The first terminal cap is couplable to a first side of a busbar. The second terminal cap is couplable to a second side of the busbar and is connected to the first terminal cap. The blind-hole nut is disposed in the second terminal cap. The socket is couplable to a device and is configured to engage the first terminal cap. The first terminal barrel dispose in the socket and is positioned to electrically engage the busbar. The threaded stud is disposed in the socket and is operational to engage the blind-hole nut. The electrical terminal is finger proof on at least one side of the busbar.

An electrical connector includes a clamp body having a base, a side portion, and an upper portion. The clamp body defines a cable groove configured to receive a primary conductor and an aperture for receiving a secondary conductor. A primary fastener is movably connected to the clamp body. The primary fastener has a first section and second section telescopically connected to the first section. A keeper is connected to the clamp body and moveable with the primary fastener to secure the primary conductor in the cable groove. A secondary fastener is configured to receive the secondary conductor in the aperture.