CIRCUIT BREAKER WITH MAGNETIC BLOW-OUT MEANS AND ROTATING ARC

摘要

1. Switch with magnetic blow-out in arc rotation comprising : - a pair of separable contacts (24, 42) each having a ring-shaped electrode forming a rotation track of the root of an arc drawn when said contacts are separated, - a tubular coil (44) coaxial to said electrodes and having a terminal side (52) coupled to one of said ring-shaped electrodes on the opposite side of said track, said coil (44) being electrically connected on the one hand to one of the switch terminals (64, 66), and on the other hand to the coupled electrode so as to be electrically supplied in series of an arc tied on the coupled electrode and to generate a radial magnetic field in the extension zone of said arc. - a conducting ferromagnetic core (38) coaxially extending inside the coil (44) to intensify the magnetic field of the arc blow-out, the front side (50) of the core (38) being adjacent and separated from said coupled electrode by a free gap, characterized in that said core (38) is electrically connected to said coupled electrode.