What is the typical rating range for RCDs used in domestic applications?

In domestic applications, the typical rating for Residual Current Devices (RCDs) is usually in the range of 10mA to 30mA. These ratings are designed primarily for personal protection, as they are sensitive enough to detect current leakage that can cause electric shocks.

The lower ratings of 10mA and 30mA are particularly relevant for circuits that supply power to sockets and appliances where the risk of electric shock is significant. Using such low thresholds helps ensure a rapid disconnection of power, thereby enhancing safety for individuals who may inadvertently come into contact with live parts.

Higher ratings, such as those in other options, typically serve different purposes. For instance, ratings above 30mA can be more appropriate for protection against fire hazards in high-powered circuits rather than personal protection. In summary, the 10mA to 30mA range is specifically tailored to domestic settings to ensure occupant safety from electric shock.