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size and speed of fuse for AC/DC SMPS?

Discussion in 'Electronic Design' started by [email protected], Jun 25, 2007.

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  1. Guest

    I am using an off the shelf AC/DC switching power supply to run a
    small motor. The most DC current ever drawn is 3A. I am trying to pick
    out a fuse for the AC side. I am not sure if I should use fast blow or
    slow blow. The retard at ASTEC tech support said a 90A fast blow, yes
    thats right 90A. Whats the right size and speed? And why?
     
  2. kell

    kell Guest

    Call astec back. Talk to a supervisor if you have to. You didn't
    give us any info about the power supply so we can't answer your
    question.
     
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