Areva T&d Sa

Alstom Technology Limited

Dan Penache

Michel Perret

Denis Dufournet

Michel Tresy

A current interrupting chamber comprising a moving assembly movable axially between a start position and an end position of an operation of opening the circuit-breaker. The current interrupting chamber includes a first compression chamber; a hollow drive tube having ports for bringing the interior of the drive tube into communication with the outside of the current interrupting chamber; a second compression chamber; and a structure for obstructing the ports of the drive tube from the start position of an operation of opening the circuit-breaker and up to an intermediate position which is reached between the position of separation of two arcing contacts from each other and the end position of an operation of opening the circuit-breaker.

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Chavanoz, France

Dan Penache