A shelf power supply system has a power supply track and a first power taking head and a retractable power supply track, the first power taking head has an external wiring. The retractable power supply track has a first moving part electrically connected to the external wiring and a second moving part being electrically connected with the first moving part and slideable thereon. The second moving part has a terminal. The invention can solve the problems that the wiring is complex and difficult to hide in the power supply system of the low-voltage lamps installed in the shelves and the laminates, suitable for the shelf support arms with different lengths, the size is small, the operation is very convenient, and one track can power multi-layer lamps, avoiding complex winding in the shelf, which is very simple operation and convenient for hidden installation in the shelf.

A power connector system includes a busbar having a conductive plate. The conductive plate has first side and a second side. The conductive plate has a thickness profile between the first side and the second side. The conductive plate has a busbar opening therethrough between the first side and the second side. The power connector system includes a busbar connector received in the busbar opening of the conductive plate. The busbar connector includes a busbar housing and a busbar contact received in a socket of the busbar housing. The busbar housing is electrically conductive and electrically connected to the conductive plate in the busbar opening. The busbar contact is electrically conductive and electrically connected to the busbar housing in the socket. The busbar contact has a mating interface configured to mechanically and electrically connect to an electrical component plugged into the socket. The busbar housing and the busbar contact are both contained within the thickness profile of the conductive plate.

A power connector system includes a busbar having a conductive plate. The conductive plate has first side and a second side. The conductive plate has a thickness profile between the first side and the second side. The conductive plate has a busbar opening therethrough between the first side and the second side. The power connector system includes a busbar connector received in the busbar opening of the conductive plate. The busbar connector includes a busbar housing and a busbar contact received in a socket of the busbar housing. The busbar housing is electrically conductive and electrically connected to the conductive plate in the busbar opening. The busbar contact is electrically conductive and electrically connected to the busbar housing in the socket. The busbar contact has a mating interface configured to mechanically and electrically connect to an electrical component plugged into the socket. The busbar housing and the busbar contact are both contained within the thickness profile of the conductive plate.

A high voltage power distributor comprises an insulated high voltage power cable, a fuse mechanically connected to a fuse holder and a busbar that is electrically connected between the cable and the fuse. The fuse, the fuse holder, the busbar and the cable are accommodated in a housing.

A high voltage power distributor comprises an insulated high voltage power cable, a fuse mechanically connected to a fuse holder and a busbar that is electrically connected between the cable and the fuse. The fuse, the fuse holder, the busbar and the cable are accommodated in a housing.

The present disclosure provides a circuit assembly that has a novel structure, with which it is possible to prevent the occurrence of a problem caused by an excessive repulsive force of a heat conductive member by controlling the repulsive force of the heat conductive member. A circuit assembly includes: a heat generation component; bus bars that are connected to connecting portions of the heat generation component; an insulating base member that holds the heat generation component and the bus bars; and an elastic heat conductive member that is in thermal contact with the bus bars. The bus bars press the heat conductive member in a mounting direction in which the bus bars are mounted on the base member. As a result of the bus bars abutting against bus bar positioning portions provided on the base member, the positions of the bus bars in the mounting direction are defined.

The invention relates to an electric unit for connecting to a DIN rail (50), having means for contacting the lines (70) of a busbar (60), said means comprising a rotatable contacting element (30, 40, 50), the outer circumference of which is equipped with contacts (32, 42, 52, 53, 62, 63). A first group of contacts (32, 52, 62) and a second group of contacts (42, 53, 63) are provided, wherein the contacts of the first group are arranged so that, when the contacting element (30, 40, 50) is rotated they contact contact lines (70) extending in a first place (A1), and the contacts of the second group are arranged so as to contact lines extending in a second plane (B1).

A busbar connector includes an insulative housing which is configured to accept a busbar assembly therein. The busbar connector is connected to an electrical device, such as a server. The busbar connector includes contact terminals which engage with busbars for distributing power. The busbar connector can include a signal housing having signal contact terminals for connection to a signal component of the busbar assembly.

A busbar connector includes an insulative housing which is configured to accept a busbar assembly therein. The busbar connector is connected to an electrical device, such as a server. The busbar connector includes contact terminals which engage with busbars for distributing power. The busbar connector can include a signal housing having signal contact terminals for connection to a signal component of the busbar assembly.

An electrical connector assembly includes a connector housing, a planar busbar having a rectangular cross section defining two opposed major surfaces and four minor surfaces, a cooling plate that is sized, shaped, and arranged to be in conductive thermal contact with a first major surface of the planar busbar, and an L-shaped busbar partially disposed within the connector housing having a first end connected to an electrical terminal and having a second end attached to, and in conductive thermal contact with, a second major surface of the planar busbar. The cooling plate is configured to reduce a temperature of the planar busbar and the attached L-shaped busbar. A method of assembling such an electrical connector is also presented.