They're slowly spreading across Europe. Germany's had (and cursed) them for a few years, although I've gathered they're no longer required, only recommended. I'm quite curious about Austria's new regs, I'll hopefully get some info on them next week. The last thing I've read about AFDDs is that there isn't much evidence of advantages in fire safety over blanket RCD protection. Most of the data seem to be from the US where, as we all know, earth leakage protection of entire circuits is fairly uncommon.
