What Is a 30Ma Rcd?
'High Sensitivity' Rcds, Rated 30Ma or Even 10Ma, Are Designed to Disconnect the Supply Within 40Ms at 150Ma and Within 300Ms at Rated Tripping Current to...
'High sensitivity' RCDs, rated 30mA or even 10mA, are designed to disconnect the supply within 40ms at 150mA and within 300ms at rated tripping current to protect the user. 'Medium sensitivity' devices, rated 100mA or more will provide protection against fire risks but will not provide full personal protection.
What is a 30mA residual current device used for?
The most common modern application is as a safety device to detect small leakage currents (typically 5–30 mA) and disconnecting quickly enough (<30 milliseconds) to prevent device damage or electrocution.
What should a 30mA RCD trip at?
For instance, a healthy 30mA RCD should trip between 27mA and 30mA with all electrical appliances disconnected. If by conducting a ramp test your tester trips the RCD outside of these thresholds, you could have a faulty device that may be prone to nuisance tripping.
Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.
