Hello Forum
my old Hotpoint fridge has a burnt-out ePTC
I believe it a 103N0050 as that's the ePTC that comes up when listing spairs

I see this question has been posted before
it appears 103N0011 is compatible if there is no run capacitor which I believe is my situation (and I know what a capacitor is).
103N0016 if there is a capacitor.

My question is the 103N0021 compatible as these seem to be the most commonly available?

Why are so many different 103N variants are they for different sized typess of compressor climate and or supply voltage etc.

Thank you
Iain