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Is the QO, QOB, QOU breaker a UL489 listed cicuit breaker or a UL1077 recognized component, supplementary protector?

Issue:
Is the QO, QOB, QOU breaker a UL489 listed cicuit breaker or a  UL1077 recognized component, supplementary protector?

Product Line:

Environment:

Cause:

Resolution:
QO, QOB and QOU are UL489 circuit breakers and are labeled as such.   The QYU is a UL1077 supplementary protector.


CTA-ID : 1863
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