In The Netherlands they call them "Aardlekschakelaar"
which is translated into English
"Earth leakage switch"
They were 30 mA on non earthed circuits and 500 mA on earthed circuits bearing in mind that The Netherlands does not use the MEN system and has the earth wire separated from the neutral and connected to it's own earth mat.
These Aardlekschakelaars were usually fitted to protect a batch of 2 to 5 circuits at the time.
edited for typo's
[This message has been edited by RODALCO (edited 12-29-2006).]
