Which circuit breaker is used to prevent an electric shock ?

A Residual Current Circuit Breaker (RCCB) is specifically designed to prevent electric shocks by quickly disconnecting the circuit when it detects a leakage current. It monitors the difference between the live and neutral currents in a circuit; if this difference exceeds a preset threshold, indicating that some current is leaking to ground (such as through a person), the RCCB trips and cuts off the power supply. This rapid action helps prevent severe electric shocks and potential fatalities by minimizing the duration of exposure to dangerous currents.

Yes, RCCBs (Residual Current Circuit Breakers) are designed to protect against electric shocks by quickly disconnecting the circuit when they detect a leakage current. This leakage current could occur if a person comes into contact with a live conductor, creating a path to ground. The RCCB senses this imbalance and trips to interrupt the flow of electricity, thereby preventing prolonged exposure to potentially lethal electric shocks. RCCBs are commonly used in residential, commercial, and industrial settings to enhance electrical safety.

An Earth Leakage Circuit Breaker (ELCB) is a device used for the prevention of electric shocks. It operates similarly to an RCCB by detecting small leakage currents that could indicate an electrical fault or a person coming into contact with live parts. The ELCB interrupts the circuit rapidly when such a fault occurs, thereby minimizing the risk of electric shock. ELCBs are particularly effective in older electrical installations where grounding may be inadequate, as they provide an additional layer of protection against electric shock hazards.

A Miniature Circuit Breaker (MCB) primarily serves to protect electrical circuits from overcurrents and short circuits rather than specifically preventing electric shocks. While MCBs do provide some level of protection against electrical faults that could potentially lead to shocks, their main function is to trip and disconnect the circuit in case of overcurrent conditions. MCBs are commonly used in electrical distribution boards to protect wiring and electrical appliances from damage due to excessive current flow. However, for enhanced protection against electric shocks, especially in scenarios involving leakage currents, RCCBs or ELCBs are typically employed in conjunction with MCBs.

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