公开(公告)号：EP3389070A1

公开(公告)日：2018-10-17

申请号：EP17166488.1

申请日：2017-04-13

Applicant: ABB Schweiz AG

Inventor： Gati, Rudolf ,  Bator, Matthias ,  Prestini, Osvaldo ,  Cisana, Pierluigi ,  Strassel, Thorsten

IPC: H01H9/36 ,  H01H9/34

CPC classification number: H01H9/36 ,  H01H9/342

Abstract: An arc chamber (10) for a DC circuit breaker comprises an entry side (E) adapted to receive an electric arc (50), which was generated outside of the arc chamber (10) and which propagates in a forward direction (F), a plurality of stacked splitter plates (11a ... 11f), and at least one inhibitor barrier (20a, 20b). The at least one inhibitor barrier (20a, 20b) is arranged on the entry side (E) to inhibit a reverse propagation of the electric arc (50) out of the arc chamber (10) in a reverse direction (R).
DC circuit breaker comprising an arc chamber. Use of an arc chamber with a circuit breaker in a DC electrical system.

公开(公告)号：EP3872826A1

公开(公告)日：2021-09-01

申请号：EP20159685.5

申请日：2020-02-27

Applicant: ABB Schweiz AG

Inventor： Lantz, Gabriel ,  Bator, Matthias ,  Abplanalp, Markus ,  Suetterlin, Ralf-Patrick

IPC: H01H9/32

Abstract: A switching device for low-voltage or medium-voltage applications comprises for each electric pole at least a fixed contact 20 and at least a movable contact 30. Each movable contact is reversibly movable between a coupled position C, at which said movable contact is coupled with a corresponding fixed contact, and an uncoupled position O, at which said movable contact is separated from said fixed contact by a separation gap 40. An arc-diverting element 50 made of electrically insulating material, which may be a degassing material such as PTFE, is interposed between the contacts 20, 30 in the uncoupled position O. The arc-diverting element may be part of a flexible lamina (500) fixed to a supporting surface (72) of an arc-quenching arrangement (70), or a plunger (50) coupled to the movable contact by a kinematic chain (505).