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QO120 - What is the oil that oozes out of QO breakers?


Issue:
QO breaker and oil residue.

Product line:
Circuit Breakers

Environment:
Applies to QO and QOB type breakers

Cause:
Wire causing oil to get in breaker?

Resolution:
There are no fluids in QO breaker. The oil must be coming from some external source, perhaps running down to the breaker from the load wire.

It could be the plasticizer coming from the wiring insulation. See attached document.
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