Choice of sensitivity
The sensitivity of an earth leakage protection device depends mainly on the function it has to perform:

• Protection from electric shock by direct contact.
• Protection from electric shock by indirect contact.
• Protection from fire due to current leakage.

The following table gives a reminder of:

• The circuits that must be protected against these various risks (obligation or recommendation).
• The type of earth leakage protection device to be used in each case, its sensitivity, and its location in the distribution diagram.

Released for:Schneider Electric Thailand