Buzzing in Electric Panel

I ran across this yesterday. I heard a buzzing in an electric panel and it seems to be coming from 1 or 2 breakers. My thought is the breakers are going bad. I recommended an electrical contractor further evaluate. Has anyone else run across buzzing in a panel? The panel was a Siemens.

Thanks in advance for all feedback


Could be bad breakers, but it may also be an arcing connection. In any event, it should be deferred.

Yes it is representative usually of a loose hidden connection on the Hot bus bar or the breaker is failing.

Were they AFCIs?

The buzzing was not on an AFCI breaker.

I appreciate the feedback everyone.

Thanks again