What Are RCBOs and Why Does Your Home Need Them?

Modern fuse boards do much more than trip a breaker—they help protect your home, your appliances, and your family. One of the best upgrades you can make is switching to RCBOs. But what exactly are they, and why do so many Petersfield  homes still go without them?

At Wessex Electrical Services, we specialise in upgrading consumer units and replacing outdated protection systems with modern RCBOs that keep your home safe from both overloads and electric shock.

What Is an RCBO?

• RCBO stands for Residual Current Breaker with Overcurrent Protection. In short, it combines two essential safety devices into one:
• RCD (Residual Current Device): Cuts power instantly if it detects current leaking to earth (like when electricity flows through a person)
• MCB (Miniature Circuit Breaker): Protects your circuit from overload or short circuit faults

What Makes RCBOs Better Than Old Systems?

Most older fuse boards have one RCD covering multiple circuits. If one circuit trips, it can shut off power to your entire home. RCBOs are:

✅ Safer: Each circuit is individually protected, reducing risk
✅ More Reliable: If one trips, the rest of the house stays on
✅ Easier to Diagnose: You know exactly where the problem is
✅ Compliant: Meet current wiring regulations (BS 7671)

When Should You Upgrade to RCBOs?

• Your consumer unit still uses fuse wire or older MCBs
• You experience nuisance tripping from shared RCDs
• You’re adding high-draw equipment like EV chargers or a hot tub
• You’re rewiring part of your property or having an EICR

How the Upgrade Works:

We:

• Assess your current consumer unit
• Recommend an RCBO-based board if appropriate
• Remove the old board safely
• Install a new 18th edition compliant board with RCBOs and SPD (Surge Protection Device)
• Test every circuit and provide full certification

One of our customers in Petersfield was renovating their kitchen and installing a new induction hob and electric oven. We found their fuse board lacked RCD protection and recommended a full upgrade to RCBOs with surge protection. They now enjoy a modern, protected system with no more tripping every time they boiled the kettle!

Why RCBOs Matter for Rural Homes: Petersfield and the surrounding area has many older or rural properties, which may still have legacy wiring.

RCBOs are essential in properties:

• With outdoor power or garden rooms
• On overhead supply lines susceptible to surges
• With multiple high-load appliances

Why Petersfield Chooses Wessex Electrical Services Ltd:

• Local electricians with knowledge of your homes
• NAPIT-certified and fully insured
• Which? Approved Trusted Trader Electricians
• Tidy, respectful service with clear communication
• Trusted by homeowners and landlords alike

📞 Call 01730 299247