RCD

Definition: Residual Current Device. A protection device which is actuated by the residual current.

Related Links

Residual-current device – Wikipedia
Residual current devices (RCDs) and Ground fault interrupters (GFIs)
RCDs Explained | Electrical Safety First
What is the difference between a residual current device (RCD) and a residual circuit breaker with overcurrent protection (RCBO)? – Energuide

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