| 摘要 |
PURPOSE: A molded case circuit breaker is provided to obtain an assembly structure of a current-interrupting section equipped with a bridging rotary contact shoe. CONSTITUTION: A molded case circuit breaker comprises a switching mechanism, and a current-interrupting section connected to the switching mechanism, and including an insulated case(6), a pair of fixed contact shoes(7A) disposed inside the insulated case to face each other, each of the fixed contact shoes having a substantially linear conductor portion, a tip portion and a terminal portion, a rotary contact shoe disposed between the fixed contact shoes so that the fixed contact shoes and the rotary contact shoe form a Z-shape conducting path when the switching mechanism is on, and the rotary contact shoe is rotated to be separated from the fixed contact shoe by an electromagnetic counter force when an overcurrent flow through the Z-shape conducting path, and a contact shoe holder(9) linked to the switching mechanism and holding the rotary contact shoe.
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