Schneider Electric Industries Sas

Philippe Legendre

Jean-Paul Gonnet

Denis Giraud

Jean Laurent Pozzobon

Jean-Laurent Pozzobon

The invention relates to an electric contact device that is part of an electric switching device able to allow or interrupt the passage of the electric current, comprising at least one moving support () and a contact pad () mounted on the moving support (), the moving support () being able to move to position the contact pad () in contact with a fixed contact surface () connected to an electrical conductor, the contact pad () comprising a contact surface () designed to cooperate with said fixed contact surface (). The contact surface () of the contact pad () comprises a first spherical portion, comprising an actual zone of contact with said fixed contact surface () in the position allowing the passage of current, and, in the continuation of the first spherical portion, a second convex portion with a variable shape going from spherical to cylindrical. The invention also relates to a low-voltage single-pole phase unit comprising such an electrical contact device.

Electrical contact device and low-voltage single-pole phase unit incorporating such an electrical contact device

The invention relates to a single-pole switching unit having a housing comprising a moving contact bridge and a pair of fixed contacts cooperating with said moving contact bridge and respectively connected to a current intake conductor, two electric arc cutoff chambers respectively opening onto an open volume of the moving contact bridge, each cutoff chamber being connected to at least one exhaust channel (). The exhaust channel () comprises a rotating gate () designed to be rotated around an axis substantially perpendicular to the exhaust channel () by the passage of switching gases. The rotating gate () comprises an edge () positioned across from an inner wall () of the exhaust channel, in the first obstruction position. The arrangement of the rotating gate () and the inner wall () is such that the distance between said edge () and said inner wall () remains constant and equal to said first distance up to a first threshold value of the angle of rotation of the rotating gate (), then increases linearly up to a second rotation angle threshold value corresponding to complete opening of the discharge channel. The invention also relates to a switching unit comprising at least one single-pole switching unit.

Single-pole switching unit and switching unit comprising one such unit

The present invention relates to a transposition device for a prefabricated electrical canalization, said canalization includes a certain number of conducting bars distributing different phases including or not the neutral, the bars extending substantially parallel to one another, the transposition device being designed to reverse the position of at least two bars with respect to one another in the canalization. This device is characterized in that it is designed to be incorporated in said canalization, and includes the same number of portions of bar as the number of above-mentioned bars of the canalization, at least one of these portions of bar being interrupted inside the device so as to form two parts of portions of bars, these parts includes at their ends a fold towards the outside of said device thus forming an end part that is outwardly offset so as to increase the space between these end parts.

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Grenoble, France

Philippe Legendre