Fusebox F3031MZ 31 Way 100A Main Switch Consumer Unit with Type 2 SPD
£179.73
Ex. VAT
(over £100+VAT, applies to zone A only , £6 +VAT otherwise)
Order online & collect in store
This is the Fusebox F3031MZ 31 Way 100A Main Switch Consumer Unit with Type 2 SPD – Dual-Row Surge-Protected Distribution Board available at SparksDirect.co.uk for the best price.
Please note: this Fusebox Consumer unit is unpopulated; the MCBs need to be ordered separately. See the Accessories section for more accessories for this board, and see the 6kA Standard RCBOs (codes starting with RTA06), Compact RCBO type A curve B (RTAMB), compact RCBO type A curve C (RTAMC), Bi-directional mini RCBO type A curve B (RTAMBxxBD), Bi-directional mini RCBO type A curve C (RTAMCxxBD), AFDDs (AFDD0xx), MCB curve B (MT06B), MCB curve C (MT06C), or Henley Connector Blocks. To be ordered separately.
The Fusebox F3031MZ is a heavy-duty 31 Way consumer unit designed for larger domestic electrical systems, workshops, outbuildings or light-commercial installs where extensive circuit protection is needed. Featuring a 100A double-pole main switch for secure isolation of the supply, and a factory-fitted Type 2 Surge Protection Device (SPD), this board combines high capacity with essential protection against transient voltage surges — helping safeguard sensitive equipment from indirect lightning or switching spikes.
Built as part of Fusebox’s F3 series, the F3031MZ uses a dual-row (15/16) layout that gives electricians generous space for installing RCBOs, MCBs or other modular protective devices while keeping the overall footprint manageable. Its metal enclosure, reinforced cable entry protection and installer-friendly features make it a reliable and compliant choice for modern electrical installations.
Whether you’re wiring a large family home, municipal property or multi-circuit system, the F3031MZ offers the expanded capacity and surge defence you need to meet current wiring standards.
Technical Specifications
- Product Model: Fusebox Fusebox F3031MZ 31 Way Main Switch Consumer Unit with SPD
- Brand: Fusebox
- Series: F3 Series Type 2 SPD Consumer Units
- Current Rating: 100A double-pole main switch incomer
- Usable Outgoing Ways: 31 total (15 + 16 dual-row)
- Surge Protection: Integrated Type 2 SPD (direct-to-busbar) – no additional MCB required
- SPD Performance:
- Max Discharge Current (Imax): 40kA
- Nominal Discharge Current (In): 20kA
- Response Time: 25 ns
- Voltage Protection Level (L–PE): 1.5kV
- Standards Compliance: BS EN 61439-3, 18th Edition (BS 7671) wiring regulations
- Voltage: 230V AC
- IP Rating: IP2XC (internal finger-safe)
- Enclosure Material: 1mm electro-galvanised steel with RAL 9001 powder-coated finish
- Mounting: Surface-mounted dual-row board
- DIN Rail: 35mm raised removable DIN rail
- Earth & Neutral Terminals: Top-mounted terminal bars
- Cable Knockouts: Round 20mm & 32mm on top/bottom/rear, 40mm on sides
- Tail Clamp: Included for secure cable entry
- Dimensions (Approx): 512mm (height) x 378mm (width) x 113mm (depth)
- Weight: 8.5kg
- Accessories Included: Busbar, captive screws, reinforced grommet strip, label pack
Three Reasons Customers Recommend This Product
- High Circuit Capacity for Large Systems – The 31 usable ways with a dual-row layout provide plenty of room for multiple RCBOs or MCBs, ideal for larger domestic or light-commercial installations.
- Built-In Surge Protection Without Losing Ways – The integrated Type 2 SPD connects directly to the busbar, offering transient overvoltage defence without consuming an outgoing way, enhancing board efficiency.
- Installer-Focused Design & Compliance – Electricians value features like reinforced grommet protection, captive cover screws, clearly labelled earth/neutral bars and full compliance with BS EN 61439-3 and 18th Edition wiring regs.
The Fusebox F3031MZ 31 Way Main Switch Consumer Unit with Type 2 SPD is a high-capacity, surge-protected distribution board that combines robust electrical protection with real-world usability for larger installations. Its dual-row configuration, integrated surge defence and fulfilling of modern standards make it a strong choice for electricians and homeowners upgrading or installing main consumer units.
Note: Some images and pictures are for reference only. The item may differ from the image/picture due to manufacturer's change. Should you require the exact item in the picture, please call or email us to enquire.
Shipping
Sparks Direct delivers via courier to the UK only; the standard delivery charge is £6 + VAT for all orders under £100 + VAT. If your order is over £120, you get free delivery (unless there's a special delivery charge for the items you wish to order or you're in shipping zone C or D). Full details for shipping charges can be found via Terms and Conditions.
If the items you order are in stock and the order is placed before 1.00pm, delivery can be made within 1-2 working days. If the items are not in stock, we will inform you via email how long it will take or ask for your confirmation if there's a long lead time.
Returns
We offer 30-day returns for unwanted items - please email us to request a returns number which will need to be quoted when the items are returned. For faulty items or items damaged in transit, please advise via email, and an appropriate returns number will be provided. Full details concerning returns and refunds can be found via our Terms and Conditions.
