Assuming it's not a typo, a breaking capacity of 75 kA is impressive. I guess that means the energy let-though is also much reduced with normal sized PFC ... which could help with a lot of niggling problems e.g. too small c.p.c.s or foil shielded cables.

I do have a nagging worry about reliance on electronics for this kind of thing though - just one lighting strike just a bit too close (or other EMP of some kind or half a dozen other forms of interference) and it's likely to malfunction - will it fail safe? will it be prone to nuisance tripping?

Any ability to log running conditions and be able to review the data after an event would be a huge bonus for fault-finding.

   - Andy.

Assuming it's not a typo, a breaking capacity of 75 kA is impressive. I guess that means the energy let-though is also much reduced with normal sized PFC ... which could help with a lot of niggling problems e.g. too small c.p.c.s or foil shielded cables.

I do have a nagging worry about reliance on electronics for this kind of thing though - just one lighting strike just a bit too close (or other EMP of some kind or half a dozen other forms of interference) and it's likely to malfunction - will it fail safe? will it be prone to nuisance tripping?

Any ability to log running conditions and be able to review the data after an event would be a huge bonus for fault-finding.

   - Andy.