Circuit breaker having a plurality of breaker chambers arranged in parallel, with a common transmission and reduced length

A high or very high voltage circuit breaker comprising, for each phase, a metal tank in which there are mounted at least two breaker chambers connected electrically in series with each other, each breaker chamber including a pair of main contacts and a pair of arcing contacts, each of which is integral with one of the main contacts, wherein:

• the breaker chambers are arranged arallel to each other in the tank;
• the ends of the chambers, through which at least one pair of movable contacts of each chamber is driven, are situated in a common plane;
• and
• the mechanical transmission assembly, which effects the simultaneous transmission of movement and which determines identical path lengths for the movement of the movable contacts of at least two said chambers, comprises, firstly, at least two bars of identical lengths, each of which is coupled with the pair of movable contacts of one of the said chambers, and secondly, drive means coupled to the said bars and adapted to be coupled to at least one drive rod outside the tank or extending through a wall of the tank.