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What does the BH suffix mean on the end of a Powerpact M-, P- or R- frame circuit breaker?

Issue:
Define breaker suffix
 
Product Line:
Powerpact Molded Case Circuit Breakers
 
Environment:
Breaker Suffixes
 
Cause:
Need to know what the BH stands for
 
Resolution:
The BH suffix is a factory installed Alarm switch with 1N.O/1N.C contacts. The field installable part number is S29452.
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