Digikey offers the EM530DINAV53XS1 from Carlo Gavazzi,
a 3 phase energy meter.
However, that device is offered in various forms:
EM530DINAV53XS1PFA
EM530DINAV53XS1PFB
EM530DINAV53XS1PFC
And so on. And it matters, the last 3 digits affect operation.
What is Digikey offering exactly? How can I find out, and is the right place to post?