Introducing the New F3 Series FuseBox Consumer Units

The latest FuseBox consumer units are here — smarter, sleeker, and more installer-friendly than ever. The new F3 series builds on FuseBox’s trusted reputation, combining thoughtful engineering with time-saving refinements electricians will appreciate on site.

What’s new in the F3 series?
The headline upgrade is a cleaner internal layout with better usability. Most notably, the SPD boards now incorporate a direct-to-busbar Type 2 Surge Protection Device, removing the need for a separate MCB to protect the SPD. That frees up an extra usable outgoing way without moving to a larger board. The new SPD is easy to spot thanks to FuseBox’s signature pink module.

In tight cupboards and high-circuit installs this saves wiring time, reduces clutter, and makes for tidier terminations.

Faster installs, smarter design
Key improvements across the range include:

• Revised neutral and earth terminal positions for quicker cable dressing

• Upgraded reinforced grommet strip as standard

• Redesigned internal chassis for more working space

• Pre-installed Type 2 SPD kits with ready-to-connect fly leads

• Tail clamp (ACCF) mounted on the DIN rail (except F3014DT)

Clear labelling and a logical layout make both RCBO and MCB configurations straightforward and help to minimise testing time.

New product codes
All F3 models are identified by updated codes beginning with “F3”, replacing older versions and aligning with FuseBox’s streamlined 2025 range. Always double-check the product code when ordering to ensure you’re getting the new F3 model.

Why electricians choose FuseBox
FuseBox boards have become a UK favourite thanks to high build quality at a competitive price, installer-friendly layouts, sensible SPD options, and a broad range covering main switch, dual RCD and all-RCBO configurations — all backed by clear labelling and solid technical support. The F3 series continues that formula with small but meaningful upgrades you’ll notice immediately.

Do you still need surge protection?
SPDs are required in most domestic installations unless a risk assessment proves otherwise — and with today’s sensitive electronics, they’re usually well worth fitting. The F3 SPD boards simplify compliance: the SPD is pre-fitted and no longer needs its own protective MCB. Better still, because it mounts directly to the busbar, you only give up a single way.

Which FuseBox F3 board to choose?

• F3 SPD Boards: Built-in Type 2 surge protection with full use of outgoing ways.

• F3 Main Switch Boards: Ideal for RCBO-led designs with a future-ready layout.

Device compatibility
Existing FuseBox MCBs, RCBOs and AFDDs remain fully compatible with the new F3 enclosures.

Ready to upgrade?
Whether it’s a rewire, a consumer unit replacement or a new build, the F3 series delivers cleaner installs and quicker commissioning. With direct SPD integration, improved chassis layouts and smarter cable management, FuseBox continues to make the electrician’s job easier.

Explore the full range of FuseBox consumer units at Expert Electrical to find the right board for your next project.

For more information on Introducing the New F3 Series FuseBox Consumer Units talk to Expert Electrical Supplies Ltd