RCCB is an abbreviation for Residual Current Circuit Breaker. It is a current-operated safety device that breaks the circuit when current leaks are detected, thus ensuring protection against electric shock.
Current leakages mainly happen when the current flowing in the circuit gets branched by a person who has direct or indirect contact with the current-carrying conductor. An MCB cannot detect these irregularities, whereas it can be easily detected by the RCCB.
A major advantage of RCCB is that it can control unbalanced electric current almost instantaneously, taking only 20 milliseconds to trip. Pressfit’s SFT1 RCCBs come with current ratings: 25A, 40A & 63A and rated residual operating current (IΔn): 30mA, 100mA & 300mA. SFT1 RCCBs adhere to the IS 12640 -1:2000, IEC 61008 norms and are a perfect fit for your electrical installations.
Current Leakages can be caused by both direct and indirect contact with the live conductor. However, indirect contact can be more dangerous as it is completely unexpected. Such accidental contact causes current to flow through the body and can result in electrocution. During such events, the RCCB trips almost instantly, preventing the possible risk of electric shock.
Residual Current Circuit Breakers (RCCB) protect people from power outages caused by faulty wiring, poorly insulated equipment, sudden earth faults, or improper use of an electrical device. These errors cause the current to flow in the reverse direction to the earth. This is known as earth leakage current and is an electrical hazard. RCCB instantly trips the circuit when an imbalance or mismatch in the electrical current is detected, thus preventing electrical failures.