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Posted By Topic: 3 Phase Ceramic Fuses - Surface mount

ShaneR
Nov 14 2019 08:51

Hi all

I have an old switchboard with a 3 phase protected circuit with re-wireable ceramic fuses.

Can I replace the individual ceramic fuses with 3 individual surface mount plug in MCB?

Does any upgrade require all three phases to be switched at the same time? (on overload)

I assume the other option is to replace with HRC fuses?

Thanks


   

DougP
Nov 14 2019 09:11

>Can I replace the individual ceramic fuses with 3 individual surface mount plug in MCB?

Yes. As long as they are correctly rated and you replace the base.

>Does any upgrade require all three phases to be switched at the same time? (on overload)

No.

>I assume the other option is to replace with HRC fuses?

If you want to.


But the bottom line is that a 3 pole MCB in an enclosure would be the best choice.