Residual Current devices - RCD's
A residual current device (RCD) is the generic term for a device which monitors the current in the line conductor and the neutral conductor of a circuit in an earthed system.
For use in domestic, commercial and industrial installations.
In a normal healthy circuit, the vector sum of the live and neutral current values added together will be zero. Current flowing to earth, due to a line earth fault, will return via the earth conductor, and regardless of load conditions, will be registered as a fault.
This current flow will give rise to a residual current (Ires) which will be detected by the device. If the Ires exceeds the rated sensitivity of the RCD, it will automatically activate a tripping of the faulty circuit, thereby protecting people, equipment and buildings from the risk of electrocution and fire.
This current flow will give rise to a residual current (Ires) which will be detected by the device. If the Ires exceeds the rated sensitivity of the RCD, it will automatically activate a tripping of the faulty circuit, thereby protecting people, equipment and buildings from the risk of electrocution and fire.
Residual Current Devices ( RCD's ) range
- Sensivity
- Voltage
- 3/4 poles: 230/400V
- Connection capacity
