Is there any LV Air Circuit Breaker which offers short circuit protection inspite of defect in its built in microprocessor based protection release ?
Similar to "Reflex Tripping" in Compact NS Moulded Case Circuit Breaker of Schneider
I've previously asked Schneider if the reflex tripping of their Masterpact circuit breakers operates independently of the protection module and was told yes. You can refer this post:
Low Voltage Circuit Breakers
If may be better if you ask them again to see if this is still the case.
For backup protection, I would also suggest you consider the next upstream breaker. I think this would give a more reliable installation.
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