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Fuses ATO or ATC?

thinkingaboutitthinkingaboutit Member Posts: 1
in Battery/Electrical & Solar
The operator manual for the WFCO converter specifies ATC "Littelfuse" Type 257 fuses. So far I am only able to find ATO fuses. If it matters, would someone direct me to a seller of the ATC type? Thanks.
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    CrabTabCrabTab Member Posts: 457
    edited October 2021
    ATC is closed and ATO is open to the environment.  ATC  is considered to be more weather resistant. A general example for their uses, ATC would be used under the hood of a car and ATO (or ATC) in the driver's compartment. You should be able to find ATC fuses at Amazon, Walmart, NAPA, etc.

    2019 320 Boondock Edge     - Sold Jan 2022
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    ChanWChanW Member Posts: 3,158
    I ordered them from digikey.com. Shipping is reasonable.
    Chan  -  near Buffalo NY
    2014 S Maxx
    2011 Tacoma 4cyl ... edit: 2022 Tacoma 6cyl - oh yeah! 

     A_Little_T@b'll_Do_Ya
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