Typical Residual Current Detector (Rcd) - Sunrise spas Paragon Collection Series Owner's Manual

TYPICAL RESIDUAL CURRENT DETECTOR
A residual current device (RCD,) is the generic term for a device that monitors the current in the line conductor and
the neutral conductor of a circuit in an earthed system.
In a circuit that's operating properly, 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 that will be detected by the device. If
the residual current exceeds the rated sensitivity of the RCD, it will automatically activate a tripping of the faulty circuit.
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DOC: OM-PARAGON-18E
<- Two Pole RCD
Typical specifications are as follows:
Residual Current Devices ( RCD's ) range
Sensitivity - from 10 to 500mA
Voltage - 2 poles : 230V; 3/4 poles: 230/400V
Connection capacity
- 25A: 6/10 mm² (flexible/ rigid cable)
- 40,60A: 16/25 mm²
- 80,100A: 35/50 mm²
<- Four Pole RCD
European Sunrise Spas 2018 Paragon Collection Owner's Manual
(RCD)