Delta Breaker

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finhead

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Does anyone have an illustration, or a textbook page, of a Delta breaker, as in Section 408.36 (D)? I know I've seen a picture of one, but can't remember where.

Brian
 
Mike, I have actually installed two (both were SQ D) and removed one from service in my early career. I remember even then they were allowed for "replacement only" which is what we were doing on the ones I remember installing.

I wish I could have or would have kept one.

Roger
 
Had dealings with one in the early ‘70s.
I hadn’t had very much experience in the trade at that time and it took a long time for my boss to explain to me what was happening with the breaker.
To the best of my knowledge that was the only one I have ever seen.

I am not sure but I think they were legal up till about the 78 cycle. Does anyone know for sure when they were removed from panels?
 
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