| 摘要 |
An instant trip device of a circuit breaker comprises a magnet; a support; an armature provided between the magnet and the support and including a rotation center portion and a rotating part is disposed to be rotatable with respect to the rotation center portion; and an armature spring configured to apply an elastic force in a direction where the rotating part of the armature becomes farther away from the magnet, wherein a groove of which one side is opened is formed at the support to support the rotation center portion, wherein a boss is formed at the rotation center portion to be inserted into the groove, and wherein the armature spring is an extension spring in which one end of the armature spring is supported by a first hanger included in the support, and the other end is supported by a second hanger included in the rotating part. |
