On 4 Sep,
Andy Burns wrote:

You want to see the price of the fast acting fuses recommended to
protect the solid state relays controlling dad's kiln, I think he has
given up on the fuses as the relays are cheaper to replace.

I came across that in a 110 volt 3 phase to DC transformer many years ago.
The fast acting fuses were failing frequently costing about £3 to replace.
The diodes they were protecting were about 80p each.

After replacing the fuses with cheaper ones fast enough to protect for
overload, neither the fuses or the diodes failed.

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