| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit breaker a handle operating direction to change from an ON state to an OFF state of which becomes the same when mounting electric power source side connecting terminal sides on a mounting bus of a distribution board so that they face each other. SOLUTION: The circuit breaker including a handle member, a link one end of which is mounted on a handle link mounting part and to be interlocked with the handle member, a presser member to which the other end of the link is connected and to be interlocked with turning motion of the handle member through the link and a contact device to be interlocked with operation of the handle through the presser member and on holding of a contact of which regulates movement of the handle link mounting part over a dead line with a line to connect the presser member, the mounting part of the link and a revolving center of the handle as the dead line is provided with a guide part to regulate a moving locus of the presser member and the link on the dead line and a handle rotational angle regulating part to regulate an rotational angle of the handle uniformly with the dead line as its center, and the handle can be mounted even when it is reversed against the link. |
