* It will not fit in a Square D QO panel. A Cutler Hammer CH (Tan handle)
breaker will only fit in a Cutler Hammer CH panel. The other type of Cutler
Hammer breaker (Black handle) may fit in a Square D Homeline panel, but it
is not approved for that. Check the labeling on the panel or cover and it
will tell you what circuit breakers are approved for that panel.
I don't and that recall was more than 25 years ago for panels made at least
35 years ago. I recall it because we had a store using that panel.
The owner did not want to upgrade the service so we just kept replacing
breakers as they died. The building is still in use so it has not burnt
down since then. :)
Breakers are designed to trip easier as they age, so a old breaker on
a heavily loaded circuit that trips perodicaly will eventually become
more sensitive and trip more.
I have seen this in my job too.
I used to fix machines at a circuit breaker manufacturer. it was a
fascinating plant, sadly 2/3rds has been torn down only a small
facility remains today... with very few workers:(
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