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What is the part number for a Handle clamp to lock off a QOB Breaker?

Issue:
Handle clamp for QOB breakers
 
Product Line:
QO/QOB Miniature Circuit Breakers 
 
Environment:
QO/QOB Handle Attachment Accessory
 
Cause:
Application clarification
 
Resolution:
QO1LO (single pole only) or HLO1 (1, 2, 3 pole) .
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