Thread: So what is an APR fuse?
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Ralph Mowery[_3_] Ralph Mowery[_3_] is offline
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Default So what is an APR fuse?
In article ,
says...

NOT true. It is branding only. Littlefuse vs Bussman
ATO was available for registering - Auto was not - so Littlefuse
registered ATO as it's "auto" fuse. When Cooper Industries Bussman
division got into the market they used ATC for AT style COOPER.




It seems to be acombination of both. One is branding as a trademark by
companies, and there is a difference in the way they are made. One
completely closed in plastic and one with the element exposed to air.
Maybe a paten problem, I don't know.

https://www.fusetaps.com/ato-atc-15a-fuse.html


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