公开(公告)号：US3973233A

公开(公告)日：1976-08-03

申请号：US506191

申请日：1974-09-13

申请人： Toshio Miyamoto ,  Teijiro Mori ,  Kiyoshi Matsuura ,  Bungo Hara

发明人： Toshio Miyamoto ,  Teijiro Mori ,  Kiyoshi Matsuura ,  Bungo Hara

IPC分类号： H01H71/12 ,  H01H71/24 ,  H01H71/28 ,  H02H7/22 ,  H01H87/00

CPC分类号： H01H71/2472 ,  H01H71/121 ,  H01H71/28 ,  H02H7/222 ,  H01H71/2454

摘要： A circuit interrupter has a pair of contacts, a self-restoring type current limiting element and a first electromagnetic trip device serially interconnected. The current limiting element is connected across a parallel connected resistor and a second electromagnetic trip device. Both trip devices have a common magnetic circuit including a single stationary core and a single movable iron piece. The first trip device responds to a shortcircuiting current flowing through it to open the contacts but the second trip device is operative to open the contacts only after the current limiting element has performed the operation of limiting a shortcircuiting current.

摘要翻译： 电路断路器具有一对触点，自恢复型限流元件和串联连接的第一电磁跳闸装置。 电流限制元件连接在并联的电阻器和第二电磁跳闸装置之间。 两个跳闸装置具有包括单个固定铁芯和单个可动铁件的共同磁路。 第一跳闸装置响应流过它的短路电流以打开触点，但是第二跳闸装置仅在电流限制元件执行限制短路电流的操作之后才可操作地打开触点。