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What Is a Consumer Unit?
A consumer unit (also known as a fuse board) is the hub of your property’s electrical system. It distributes power to individual circuits and protects each one using devices such as MCBs, RCDs, or RCBOs.
All our units comply with the 18th Edition Wiring Regulations (BS 7671), including:
- Non-combustible metal enclosures
- RCBO or RCD circuit protection
- SPD surge protection where required
- Clear circuit labelling and safety markings
Whether you’re wiring a new build, upgrading an old fuse box, or adding capacity to a garage or extension, we’ve got a solution that works.
Our Range of Domestic Consumer Units
We stock over 280 configurations — here’s what you’ll find:
- Main switch consumer units – clean, simple layouts
- RCBO fuse boards – protection per circuit, no nuisance tripping
- Garage consumer units – smaller units for outhouses or external installs
- 18th Edition metal fuse boards – required by UK regulations
- SPD-protected models – with built-in surge protection
- Populated fuse boxes – pre-installed breakers, ready to go
We also carry a full range of accessories: blanking plates, SPD modules, tail kits, and more.
Why Buy From Electrical 4 Less?
We’re not just an online shop — we’re a real, UK-based electrical wholesaler with a Fulham trade counter and a strong customer base of electricians, landlords, and installers.
- Based in Fulham, London – local trade & national delivery
- Established in 2018 – real experience, not just ecommerce
- Members of the IBA Buying Group and the Electrical Distributors’ Association (EDA)
- Huge stock ready to dispatch — fast delivery options
- Real support from people who understand installs
Thousands of customers have trusted us with their installs. You can too.
Explore Our Consumer Unit Categories
- RCBO Consumer Unit Range – ideal for combining overload and earth fault protection.
- Garage Consumer Units – designed for sheds, workshops, and external buildings.
- Main Switch Consumer Boards – the foundation for domestic and commercial setups.
- SPD-Protected Consumer Units – protect against surge damage from lightning and grid spikes.
- 18th Edition-Compliant Consumer Units – fully regulation-ready for modern installations.
- Consumer Unit Accessories & Fittings – from spare blanks to cable entry solutions.
Follow Us Online
Get behind-the-scenes updates, product launches, and install tips:
- YouTube – How-tos, demos, and product breakdowns
- Instagram – New stock, installs, and trade gear
- Facebook – Updates, support, and special offers
Frequently Asked Questions
What is a consumer unit?
A consumer unit (or fuse box) distributes electricity across your property and includes protective devices like RCBOs or RCDs to prevent faults and overloads.
Are all consumer units metal now?
Most domestic consumer units must be metal.
As per BS 7671 Regulation 421.1.201, units in domestic premises must be enclosed in non-combustible material when installed indoors. Plastic units are only permitted if housed inside a fully non-combustible cabinet that meets fire resistance standards.
Should I use RCBOs or RCDs?
RCBOs offer individual circuit protection, meaning one fault won’t take out all your power. They are now preferred for most modern installs.
What unit should I install in my garage?
Use a garage consumer unit – a compact, self-contained board with RCD or RCBO, ideal for outbuildings.
Can I install a consumer unit myself?
No. It must be installed or certified by a qualified electrician. This work is notifiable under Part P of UK Building Regulations.
Do I need surge protection?
Yes — especially for homes with expensive tech or sensitive electronics. Many new installs now require SPD units by default.
What’s the difference between Type A and Type AC RCDs?
Type A protects against both AC and pulsating DC faults. Type AC only covers AC faults — making them less suitable for modern homes.
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