Patent ID: 8558126

Claim:
A circuit breaker comprising: four single pole units, each single pole unit including a movable contact, a stationary contact, and a rotatable member connected to the movable contact, the rotatable member including a first opening and a second opening; a switching mechanism that provides force for moving the movable contacts into a contacting position with the stationary contacts and maintaining the contact position; a pair of rotation pins that concurrently transfer force from the switching mechanism to the rotatable members, the pair of rotation pins including a first rotation pin positioned in the first openings of the rotatable members and a second rotation pin positioned in the second openings of the rotatable members, wherein the first rotation pin applies force in a first direction to a surface of each rotatable member within the first opening, and the second rotation pin applies force in a second direction to a surface of each rotatable member within the second opening; and a plate positioned between one of the single pole units farthest away from the switching mechanism and one of the single pole units adjacent thereto, the plate including a first surface, a first hole in the first surface, a second hole in the first surface, a first portion that extends from the first surface away from the plate, and a second portion that extends from the first surface away from the plate, wherein the first rotation pin is positioned in the first hole, the first portion applies a first pressure in the first direction to the first rotation pin, the second rotation pin is positioned in the second hole, and the second portion applies a second pressure in the second direction to the second rotation pin.