An aspect of the invention is to provide an improved circuit breaker, the general nature of which can be stated as including a first conductor, a second conductor, a set of contacts, and an arc extinction system. The first conductor includes an elongated portion, and the second conductor includes a movable arm. The set of contacts includes at least a first stationary contact and at least a first movable contact, the at least a first movable contact and the at least a first stationary contact are separable to interrupt a circuit that includes the the first and second conductors. The at least a first stationary contact is disposed on the first conductor, and the at least a first movable contact is disposed on the movable arm. The arc extinction system includes at least a first insulator disposed adjacent the at least a first stationary contact. The at least a first insulator is structured to output a gas upon an initiation of an arc between the at least a first stationary contact and the at least a first movable contact to resist movement of the arc in a direction generally toward the at least a first insulator. The elongated portion extends adjacent at least a portion of the movable arm to form a reverse loop with the at least a portion of the movable arm. At least a portion of the at least a first insulator is disposed between at least a portion of the elongated portion of the first conductor and the at least a portion of the movable arm.
An arc extinction system comprising a first insulator and a second insulator disposed adjacent and at alternate sides of the at least a first stationary contact, the first insulator being structured to output a gas upon an initiation of an arc between the at least a first stationary contact and the at least a first stationary contact and the at least a first movable contact to resist movement of the arc in a direction generally toward the first insulator, the second insulator being structured to output a gas upon an initiation of an arc between the at least a first stationary contact and the at least a first movable contact to resist movement of the arc in a direction generally toward the second insulator.
Post time: Feb-17-2022