What is the difference between FFTK Series 1 and Series 2 and between firmware versions 1.20 and 1.60?

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Issue:
Difference between FFTK Series

Product Line:
Circuit Breakers

Resolution:
Series 1 has the old display, which became obsolete. Series 2 has the new display. Both work exactly the same.
Series 2 comes with firmware version 1.60, while Series 1 can be upgraded to this version.

Firmware version 1.60 allows the use of the new display. In addition to that, it fixes a bug where incorrect parameters were populated in the Configure Circuit Breaker Parameters screen.