XUCKY Residual Current Circuit Breaker (RCCB), also known as a residual current device (RCD), is an electrical safety device designed to protect against the risks of electric shock and fires caused by earth faults. RCCBs monitor the balance of current flowing through the live and neutral wires; if there is an imbalance, it indicates that current is leaking to ground, potentially posing a hazard. In such cases, the RCCB will trip, disconnecting the power supply and preventing harm.
There are different types of RCCBs based on their sensitivity to different types of leakage currents:
Type AC: This type responds to pure alternating currents (AC) only. It is suitable for general applications where there are no electronic devices or variable frequency drives that produce direct or pulsating currents.
Type A: This type responds to both AC and pulsating direct currents (DC). It is suitable for applications where there are electronic devices such as computers, TVs, or LED lights that generate rectified or chopped currents.
Type B: This type responds to AC, pulsating DC, and smooth DC currents. It is suitable for applications where there are devices such as solar inverters, battery chargers, or electric vehicles that generate smooth DC currents.
Type F: This type responds to AC, pulsating DC, smooth DC, and high-frequency AC currents up to 1 kHz. It is suitable for applications where there are devices such as frequency converters, induction cookers, or dimmers that generate high-frequency currents.
RCCBs are widely used in various settings to ensure electrical safety:
● Domestic Applications: In homes to protect against electric shocks and fires.
● Commercial Buildings: In offices, shops, and other commercial spaces to safeguard occupants and equipment.
● Industrial Usage: In factories and industrial facilities where heavy machinery and high currents are present.
● Outdoor Installations: In outdoor settings like construction sites, gardens, and public areas where the risk of electric shock is higher due to exposure to elements.
