Description
Smarter 18th Edition Compliant RCBO Consumer Unit – With FuseBox F3021MZ SPD Upgrade
FuseBox F3021MZ
The FuseBox F3021MZ SPD Consumer Unit from the latest FuseBox F3 range delivers more flexibility, more usable ways, and simplified wiring. It replaces older models like the F2006MX and includes a 100A double pole main switch, Type 2 SPD with a pink surge protection enclosure, and a fully metal housing. The SPD connects directly to the busbar—no MCB required—freeing up valuable space for additional circuits.
Key Features – FuseBox F3021MZ SPD Consumer Unit
- 21 usable outgoing ways
- SPD connects directly to the busbar – no MCB needed
- 100A double pole main switch included
- Metal enclosure with RAL 9001 powder-coated finish
- Tail clamp for meter tails pre-installed
- Green and red status indicators on SPD module
- BS EN 61439-3 and BS 7671 compliant
Technical Overview – FuseBox F3021MZ SPD Consumer Unit
- Voltage: 230V | Frequency: 50–60Hz
- DIN rail: 35mm width
- Knockouts: 20–40mm – top, bottom, sides, rear
- Earth/Neutral Bars: Clearly labelled and protected
Matching Top Trunking Kit Available
At Electrical4Less, we cut trunking so you don’t have to. This top-entry kit (SKU: MAK50/50/F3021MZ) is approx. 480mm wide and includes 2 end caps—made to fit this board perfectly.
✔️ Clean. Fast. No fuss.
View the matching top trunking kit for FuseBox F3021MZ & F3022MM
What’s New in the FuseBox F3 Consumer Unit Range?
The most significant upgrade in the FuseBox F3 range is the new single module pink SPD that connects directly to the busbar — meaning no separate MCB is required. This not only saves a usable outgoing way, but also makes wiring faster and neater.
Other improvements include:
- DIN Rail-Mounted Tail Clamp – The tail clamp is now fixed directly onto the DIN rail. This offers better cable retention and makes fitting quicker and more secure.
- Reinforced Grommet Strip – Each unit includes a tougher, more durable grommet strip to protect cables at the point of entry. It’s designed to handle demanding installations without tearing or shifting.
These enhancements make FuseBox F3 boards even more installer-friendly, while staying fully compliant with the 18th Edition Wiring Regulations.
⚡ FuseBox SPD Advantage – Save Space in Your RCBO Consumer Unit
This FuseBox F3 range unit uses a pink SPD enclosure that connects directly to the busbar. No MCB is needed, meaning faster installs and one extra usable way. Visual status indicators show green (safe) and red (fault).
Use the Right Torque – Stay 18th Edition Compliant
Use a torque screwdriver to install. The included manual shows exact torque values for all terminals, keeping your work safe and fully regulation-compliant.
Explore Other FuseBox SPD Consumer Units
Handling bigger installations? You might prefer the FuseBox F3031MZ Double Row RCBO Consumer Unit or the space-saving triple row FuseBox F3047MZ 47 Way Board.
Summary – FuseBox F3021MZ SPD Consumer Unit
The FuseBox F3021MZ RCBO SPD Consumer Unit is a high-spec, 21-way F3 RCBO board with a pink surge protection enclosure, direct-to-busbar SPD, and full 18th Edition compliance. Built for safe, modern installs.
