Electric protection apparatus comprising at least one breaking module controlled by a control device with electromagnetic coil

摘要

The present invention relates to an electric protection apparatus comprising at least one switching module fitted on a mounting support, and a control device with an electromagnetic coil juxtaposed with one of the above-mentioned modules, this device comprising a magnetic shield arranged in a plane substantially perpendicular to the plane of the mounting support, said shield being located between the control device and the switching module situated closer to said device, facing the coil of the control device, and comprising at least one ferromagnetic part shaped in such a way that said shield performs magnetic guiding of the arc as soon as separation of the contacts takes place so as to increase the propulsion component of the Laplacian force acting on the arc as soon as separation of the contacts takes place.

主权项

1. An electric protection apparatus comprising
at least one switching module and a control device having an electromagnetic coil located adjacent, side-by-side, said switching module, said switching module comprising a switching coil, and two contacts one of which is movable with respect to the other between a first position in which the contacts are closed and enable current to flow and an open position in which the current is interrupted between the contacts, the electromagnetic coil of the control device for commanding opening or closing of the contacts, the coil of the control device being located substantially facing the contacts of the switching module, the coil of the control device having a first axis extending in a Z direction, substantially perpendicular to a fixing plane, the switching coil of the switching module having a second axis extending in a Y direction substantially parallel to the fixing plane, the first axis extending substantially perpendicular to the second axis, a planar magnetic shield located between the control device and the switching module, closer to said control device and facing the coil of the control device, and comprising at least one ferromagnetic part dimensioned so that it covers the coil of said control device, said part for magnetic guiding of an arc to increase the propulsion component of the Laplacian force acting on the arc as soon as separation of the contacts takes place.