Why RCBOs are better than RCDs?

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RCBOs, or residual current breaker with overcurrent, are a type of circuit breaker that combines the functionality of an RCD (residual current device) and an MCB (miniature circuit breaker). RCDs protect against electric shock by detecting imbalances in current between the live and neutral wires, while MCBs protect against overloads and short circuits.

This is an A type 30mA RCD which is the latest RCD with DC (Direct Current) protection as well.

The 30 mA is the limit what people and animal can bare without serious electricution. Above this limit it can be lethal so it is important to test it every six month by pressing the T button as you can see on the picture. If your RCD does not work/not trip you should get a qualified/registered electrican to check your wiring system components.

Cavendish Electricals & Services recommends RCBOs to each individual circuit in your wiring system, so that any faults in one circuit will not affect the others’ functionality. If there are circuits in your clients’ homes that must stay functional at all times, such as the power to your freezer or fire alarm, a RCBO is the most practical circuit breaker to install. A RCD and MCB can still lead to a power outage, as they can only detect one type of problem. In less vital circuits, a RCD or MCB may be more cost effective, but it’s important to consider their downfalls when installing important wiring systems.

For more information on electrical safety and how to get regular maintenance, testing and protection please get in touch.

RCBOs offer several advantages over RCDs, including:

Improved safety: RCBOs provide better protection against electric shock and fire than RCDs alone. This is because RCBOs can detect both imbalances in current and overloads, while RCDs can only detect imbalances in current.
Reduced risk of false trips: RCBOs are less likely to trip falsely than RCDs. This is because RCBOs have a built-in overload protection that can distinguish between a genuine fault and a false trip caused by a surge in current.
Convenience: RCBOs can be used to protect multiple circuits from a single consumer unit, while RCDs must be installed on each individual circuit. This can save time and money when installing electrical safety devices.

Here are some of the benefits of using an RCD

Protects people from electric shock. If a person touches a live wire, the RCD will trip, interrupting the flow of electricity and preventing the person from receiving a shock.
Prevents fires. If an electrical appliance malfunctions and starts to arc, the RCD will trip, interrupting the flow of electricity and preventing the fire from starting.
Complies with regulations. RCDs are required in all new homes in the UK and are also recommended for older homes.

You must check if your electrician is qualified and also registered to carry out Domestic work under Part P and he must be registered with one of the 5 main organization, which you can check on the Competent Person scheme here.

Please Feel free to contact Cavendish Eletricals & Services and send us an enquiry through our web page. If you have any question you can email us to info@cavendishelectricals.co.uk or you can call us on 015 3648 3348.

We cover a wide range of areas: Northamptonshire, Leicestershire, Buckinghamshire, Cambridgeshire, Bedfordshire, Hertfordshire and Greater London (M25).