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Will QO breaker trip if you put a QO1LO handle clamp on it?

Issue:
Will a QO breaker still trip even if it has a handle clamp that holds it in the ON position?
 
Product Line:
Miniature Circuit Breakers
 
Environment:
QO Circuit Breakers
 
Resolution:
Yes. The breaker toggle Handle wont go in the trip position because of the handle clamp but the internal mechanism will still trip and open the contacts. 
 
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