公开(公告)号：US3683140A

公开(公告)日：1972-08-08

申请号：US3683140D

申请日：1971-05-21

Applicant: SQUARE D CO CANADA LTD

Inventor： PECK RONALD G

IPC: H01H71/12 ,  H01H33/12

CPC classification number: H01H71/121

Abstract: A movable contact blade of an electric circuit breaker is connected in series with a bimetallic strip forming a part of a tripping device. An arc current shunting blade is stacked on the contact blade, insulated therefrom, and connected to a load terminal strap in shunting relationship to the bimetallic strip. An arc which occurs during interruption of a severe overload current is transferred from the contact blade to the arc current shunting blade, causing the high current to bypass the bimetallic strip.

Abstract translation: 电气断路器的可动接触片与形成跳闸装置的一部分的双金属条串联。 电弧分流刀片堆叠在接触片上，与其绝缘，并连接到与双金属条分流关系的负载端子带。 在严重过载电流中断期间发生的电弧从接触片传递到电流分流叶片，导致高电流绕过双金属条。

公开(公告)号：US3562469A

公开(公告)日：1971-02-09

申请号：US3562469D

申请日：1968-11-18

Applicant: SQUARE D CO

Inventor： PECK RONALD G

IPC: H01H71/52 ,  H01H3/20 ,  H01H9/20

CPC classification number: H01H71/525 ,  H01H2300/046

Abstract: The circuit breaker has three ganged movable contact arm structures movable as a unit between open and closed positions by a spring-powered toggle mechanism coupled to a center one of the contact arm structures. The toggle mechanism includes a releasable cradle member which is released upon overload or a fault to permit the toggle mechanism to drive the contact arm structures to open position. A manual operating mechanism is provided for resetting the toggle mechanism when the contact arm structures are in the contact open position and for releasing the reset toggle mechanism for effecting closure of the contacts. During the closing operation, the cradle member interlocks with a latch on the center contact arm structure until the manual operating mechanism defeats the interlock by bending the latch by a camming action.