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    greatthing's Avatar
    greatthing Posts: 1, Reputation: 1
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    #1

    Nov 5, 2009, 05:59 AM
    DC and AC MCB selection
    Whether AC MCBs can be used in place of DC MCBs of same rating?
    If yes, is there any derating is required? If yes, then by how much?
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #2

    Nov 9, 2009, 06:30 PM

    Not usually, because of the methods of interrupting and arc suppression are different for AC and DC.
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