What are RCBOs?

RCBO stands for a Residual Current Circuit Breaker with overcurrent protection. It refers to a circuit breaker device designed to keep electrical circuits safe by disconnecting them when an imbalance is detected. They combine overload and short-circuit protection against ground leakage currents.

Typically, they combine an RCD (Residual Current Device) and an MCB (Miniature Circuit Breaker). RCBOs come in a variety of breaking capacities and can be utilised in a variety of applications ranging from industrial to household appliances.

Functions

RCBOs' key function as a circuit breaker is to protect electrical circuits against overloads, earth fault currents, and short circuit currents. An RCBO should be connected to an individual circuit, ensuring that any defect in one circuit does not influence the operation of the others. In the case the current develop an imbalance, RCBOs allow the circuit to be disconnected, thereby protecting persons and equipment. Hence, they are extremely important components for fuses, sockets and circuit breakers. 

Advantages & Disadvantages

RCBOs present some significant advantages, such as:

• Protects against overcurrent, overloads, short circuits, and earth faults
• Establishes a high degree of electrical safety
• Can protect individuals against direct and indirect contact with electric shocks
• Protects electrical equipment against fire outbreaks caused by leakage currents
• Makes electrical power distribution systems safe, high-performing, and reliable
• RCBOs are easy and convenient to install and use