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Collapsible contact arm drive coupling for heavy current circuit breaker operatng mechanism has shear linkage element for releasing drive coupling when given application force is exceded
Collapsible contact arm drive coupling for heavy current circuit breaker operatng mechanism has shear linkage element for releasing drive coupling when given application force is exceded
The contact arm drive coupling uses a pair of upper coupling elements attached to the circuit breaker operating mechanism (18) and coupled via a shear linkage element to a lower coupling element attached to the circuit breaker contact arm carrier.
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