What Does An RCD Do? 

RCD stands for Residual Current Device. It is a safety device that monitors the amount of current flowing through the live and neutral wires of an electrical circuit. 

How Does An RCD Work?

If the current is not balanced or there is a sudden change in the flow, the RCD will trip and disconnect the circuit. This helps to protect against electric shock and other potentially dangerous situations.

The current regulations state that these are used for most new installations, with a few exceptions. This is what sometimes causes increased costs for existing buildings due to the older boards not being able to accept RCDs or RCBOs.

An RCD helps to provide a level of protection that ordinary fuses and circuit-breakers do not provide.

What Is An RCBO?

An RCBO (Residual Current Breakers with Overload) is a device used to protect electrical circuits from both overloads and short circuits. It combines the features of a residual current device (RCD) and a circuit breaker (CB) into one unit.

How Does An RCBO Work?

Essentially, an RCBO is a device that monitors the electrical current flowing through a circuit and cuts it off if it detects any imbalances or changes in the current. This helps to prevent electrical shocks, fires, and other potentially hazardous events. A good RCBO is one that is designed to be exceptionally reliable and efficient.

It should monitor the electrical current in the circuit constantly and be able to detect even the slightest changes in current. It should also be able to quickly and accurately cut off the current when an imbalance is detected, preventing any potential issues.

Additionally, an RCBO should have an LED or other visual indicators to let the user know when it is active and when it is off.

Lastly, an RCBO should be made of high-grade materials that are designed to last, so you can depend on them to provide safety for your home or place of work.