| 摘要 |
PROBLEM TO BE SOLVED: To provide a movable contactor assembly of a circuit breaker for a current-limiting type wiring, capable of improving the efficiency of power transmission, capable of simplifying a structure component to improve assembling productivity, and capable of manufacturing a spring support mechanism quickly at low cost. SOLUTION: The movable contactor assembly includes a terminal base formed of an electric conductor and fixed and arranged at an outer case, a plurality of movable contactors provided at each phase of alternating current, having a cam surface and rotating to a separation direction from a fixed contactor at current-limiting operation, a holder plate supporting the movable contactors from both sides, a plurality of first springs granting biasing force to movable contactors in a contact direction with the fixed contactor at a closed circuit state of the circuit breaker of a wiring, and in a separation direction from the fixed contactor at current-limiting operation, a plurality of extended plates faced to and electrically connected with a side of an end of the movable contactors, a plurality of flexible wire plates electrically connecting between the movable contact and the terminal base and having a part bendable to a side of the movable contactors or the extended plates, and a second spring granting biasing force to the flexible wire plates so as to adhere to the movable contactors. COPYRIGHT: (C)2011,JPO&INPIT
|
