Newsletters
Details: Newsletter 1: RCCB
“Residual current circuit breaker”
(Download:Boletin 001 EN SFG 2017 05 03)
Known for acronym in English (RCCB), also known as residual current device (RCD, “residual current device”), is a component that instantly cuts an electrical circuit to prevent serious damage from an electrical shock in process. Damage can continue to occur even after receiving an impact, for example by a fall. |
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This electrical installation device is designed to quickly and automatically disconnect the circuit when an unbalanced current is detected. |
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Under normal circumstances, both conductors, line and neutral, are expected to conduct equal currents and any difference indicates a short circuit or other electrical abnormality, such as a leak, is present. A leak indicates that there is a risk of electrocution which can damage a person. |
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A current leak can result in electrocution damage or death, especially if current leakage passes through the human torso. A current of approximately 30mA is potentially sufficient to cause cardiac arrest or serious injury if it persists for more than a fraction of a second. RCCBs are designed to disconnect wires quickly to prevent severe damage from such events, typically described as that the RCCB is powered. |