Solid State Relay 84137120N

Electromechanical Relays
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I am searching for Solid State Relay with part number GN84137120 of Crouzet make.

I can see Manufacturer Product Number 84137120N , can some one confirm here what is significance of last character N here?

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What exactly the difference between the obsolete product and the “new generation” are is difficult to discern, but in any case, the “N” version is the manufacturer-recommended replacement for a product that is no longer in production.