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Why is the Homeline arc fault breakers humming?

Issue:
Humming noise on Homeline arc fault breakers

Product Line:
Miniature Circuit Breakers

Environment:
Homeline Circuit Breakers

Cause:
Troubleshooting of CAFI breakers

Resolution:
The electronics inside the breaker will produce a low humming noise. This is normal and is no cause for concern.
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