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RCCBs (Residual-Current Circuit Breakers) are electrical safety devices often integrated into circuit breaker panels or distribution boards. These protective devices are designed to protect electrical circuits against overloads, current leakage, or tripping caused by indirect contact. An RCCB safeguards individuals and valuable equipment from electrical shocks, fires, or electrocution and serves as the main disconnecting switch. Additionally, RCCBs are essential components in modern electrical installations, especially in areas with a risk of electric shocks, like homes, commercial buildings, and industrial facilities.
RCCBs work by constantly monitoring the current flowing through a circuit. In case of an imbalance between the current flowing and returning from the circuit, an RCCB indicates a current leakage to the ground. In such cases, the RCCB quickly detects the imbalance and trips the circuit, cutting off the power supply and preventing potential harm to people and equipment.
Using residual circuit breakers provides unmatchable benefits, such as:
Generally, residual current circuit breakers are distinguished based on their trip sensitivity, current ratings, and tripping features. These devices come with 2, 3, or 4 poles as DIN rail mounted, while some common RCCB types include:
MCBs, miniature circuit breakers, and RCCBs are circuit protection devices with prominent but contrasting functions. MCBs are designed to protect against overcurrent and short circuits, whereas RCCBs protect against electric shocks and earth leakages only. However, their combined operations are ideal for robust and effective protection purposes.
RCCBs are widely used in areas where electrical devices are consistently on the run. They are indispensable safety tools in various industrial, commercial, and residential facilities with multiple applications, such as: