| 摘要 |
Disclosed is circuit interrupting apparatus of the type including a pair of coaxially disposed electrically conductive contact carrier rods, one of the carrier rods mounted for reciprocative movement between a closed position whereby the carrier rods are engaged, and an open position whereby the carrier rods are disengaged, and the current flow therethrough is interrupted. Improved actuator apparatus for translating the movable carrier rod into and out of engagement with the other contact carrier rod includes a pair of racks operatively coupled by rotary gears, the racks mounted for reciprocating motion in respective parallel linear paths. One of the racks is coupled to a gear and rotary shaft arrangement for urging the rack forward to compress a closing spring coupled thereto, a latch and roller keeper arrangement temporarily holding the closing spring compressed. Another latch arrangement engages the operatively coupled rotary gear against linear motion when the closing spring is compressed, tripping means coupled to the rotary shaft then releasing the compressed closing spring, the rearward movement of the one rack powering the other rack coupled to the reciprocating contact carrier rod forward to close the contacts. An opening spring coupled to this rack is then compressed by the forward movement of the rack. The opening spring is then automatically released from compression by latch release means coupled to relay circuitry responsive to excessive current through the apparatus, or manually released by latch release means operatively coupled to the rotary shaft.
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