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What does Icu and Ics mean found on the label of a Powerpact breaker?

Issue:
How to interpret ICU and ICS on a Powerpact Breaker
 
Product Line:
Molded Case Circuit Breaker
 
Environment:
Applies to all Powerpact Circuit Breakers
 
Cause:
Need to know the label markings
 
Resolution:
`Icu` indicates the ultimate interrupt current the breaker can withstand, but may not be able to be put back in service.
`Ics` indicates the interrupt current the breaker can withstand and still be put back in service.
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