Double-acting arc extinguish chamber and circuit breaker

The invention belongs to the technical field of high-voltage switches, and particularly relates to a double-acting arc extinguish chamber and a circuit breaker. The double-acting arc extinguish chamber comprises a moving contact assembly, a static contact assembly and a connecting rod mechanism. The moving contact assembly comprises a moving contact seat and a nozzle. The static contact assembly comprises a static contact seat and a static arc contact. The connecting rod mechanism comprises a movable end connecting rod, a static end connecting rod and a rotating arm, and at least one part of a rod body of at least one of the movable end connecting rod and the static end connecting rod is an arc-shaped section so as to reduce the included angle between the central axis of the rod body and the tangential direction of the motion trail of the rotating arm. At least one part of at least one rod body in the movable end connecting rod or the static end connecting rod is arranged to be the arc-shaped section, so that