I've seen some of those in my green days. It could be a De-Ion circuit breaker. See the lower breaker type codes JA, KA, LA and MA. Definitely a Westinghouse make.
Not likely. Back in the pre 80's, most manufacturers included very limited information on the breaker. You might get lucky and find a paper part number label on the end near the lugs or on the side of the breaker.
The 2nd label from the left appears to say 'Westinghouse," plus it has the Westinghouse little round logos on both ends.
I did say most, I did not say all.
I was just saying to the OP you might get lucky and find the breaker info behind the trim plate. Worth a look.I did say most, I did not say all.
When was this specific breaker produced? I know that labeling requirements changed around the mid 80's.
That sure looks just like breaker number 6.
Just an observation, I would have to severely question the veracity of any coordination study on these breakers. The trip accuracy was way less back in those days to begin with and then you are adding 40 plus years of grease hardening spring wear etc. As an electrician I would say, "Not my issue, the EE told us to do it." I would not recommend an EE stamp it though.
Back in the day, we would have everything that we see as doubtful tested. I you have a high current test set, you can sleep well at night knowing your install will do as required. Though not everyone is fortunate to have/ avail of these test sets.
Good point. I'll keep this mind, thank you.
Glad that we were able to help.
