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What is meant by enhanced discrimination by cascading ?

Enhanced discrimination is the result of the exclusive Compact NSX Roto-active breaking technique which operates as follows: due to the short-circuit current (electrodynamics forces), the contacts in both devices simultaneously separate. The result is major limitation of the short-circuit current

The dissipated energy provokes the reflex tripping of the downstream device, but is insufficient to trip the upstream device

kindly find attached PDF for more clarifications

 

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