UNITARY CUT-OFF BLOCK AND CUT-OFF DEVICE, IN PARTICULAR CONTACT SWITCH COMPRISING AT LEAST ONE SUCH BLOCK

摘要

The invention concerns a unitary cut-off block (80) comprising electrical cut-off means (30) having at least one fixed contact (32), comprising an electrical contact zone (37), and a movable contact (33) with at least one end comprising a contact zone (36) which can cooperate with a contact zone (37) on a fixed contact (32). At least one arc-extinguishing chamber (24) comprises a metal wall consisting of two parallel lateral plates (68) and a rear wall (72) connecting the two lateral plates (68) so as to form a U-shaped metal wall. Each arc-extinguishing chamber (24) comprises a metal deflector (69) electrically connecting a fixed contact (32) to a rear wall (72) so as to ensure electrical continuity and form an upper part of the metal wall of the arc-extinguishing chamber.