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

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
QO Circuit Breakers
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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