Residual Current Device Function. These electrical wiring devices are designed to quickly and automatically disconnect a circuit when it detects that. A residual current device residual current circuit breaker or ground fault circuit interrupter is a device that quickly breaks an electrical circuit to prevent serious harm from an ongoing electric shock.
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In addition to detecting residual current wave forms of type a residual current protective devices of type b are used to detect smooth dc residual currents. It is more advanced than a standard circuit breaker and works by monitoring the flow of electrical current between live and neutral conductors. A residual current device rcd is designed to shut off the electrical supply in the event of a fault.
The main application is to prevent electrocution but rcds can also be used to protect equipment especially against fire.
Injury may still occur in some cases for example if a human falls after receiving a shock or if the person touches both conductors at the same time which an rcd won t prevent. Faults including damage to cables or short circuits will result in an inequality in the flow of energy and will trigger the circuit breaker immediately. It can also provide some protection against electrical fires. Injury may still occur in some cases for example if a human falls after receiving a shock or if the person touches both conductors at the same time which an rcd won t prevent.
