| 摘要 |
A compact and economic shield mechanism is used within circuit breaker compartments where a minimum separation distance exists between the end of the circuit breaker and the end of the compartment when the circuit breaker is first inserted within the compartment. The combination of an actuating lever and an extension spring converts the motion of the circuit breaker into a linear force sufficient to rapidly open the line and load shields within the minimum distance travelled by the breaker. The compartment line and load shields return to their closed position under a restoring force provided by the combination of a linear spring and a torsion spring when the breaker is withdrawn from the compartment.
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