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High current fuses and holders

John Mann
Hello All,

A drive manufacturer has specified that a 450A 1kV fuse should be used on the DC bus supplying its drives.  I've only located one fuse that meets this spec, the Siemens 3NE3233 (RS 395-822). This is a size NH2 fuse, and NH2 fuseholders don't seem to go above a 400A rating e.g. the Bussmann TD2-D (RS 765-2960).

It would concern me to put a 450A fuse in a 400A-rated holder, however the current in normal operation will be about 300A and in a fuse-blow situation, well above 450A.  Would I be justified in using this part, or can anyone point me to alternative holders (or fuses)?

Thanks,

John.
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  • Former Community Member
    0 Former Community Member
    Hello,


    Try giving SIBA a call. In the past, they always managed to have fuses & holders to suit my drive applications.


    Regards,


    Jon
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  • Former Community Member
    0 Former Community Member
    Hello,


    Try giving SIBA a call. In the past, they always managed to have fuses & holders to suit my drive applications.


    Regards,


    Jon
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