Fusebox 21 Way RCBO Consumer Unit with SPD and Main Switch F3021MZ

Fusebox 21 Way RCBO Consumer Unit with SPD and Main Switch F3021MZ

Name: Fusebox 21 Way RCBO Consumer Unit with SPD and Main Switch F3021MZ
Brand: Fusebox
SKU: F3021MZF
Price: 83.95 GBP
Availability: InStock

Product Code F3021MZ

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£69.96

exc VAT

£83.95 : inc VAT

£83.95

inc VAT

£69.96 : exc VAT

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QTY Unit Price
1-2 £69.96 £83.95
3+ £69.40 £83.28

The Fusebox F3021MZ (Replaces Fusebox F2020MX) is a 21-way RCBO consumer unit equipped with a 100A main switch and a Type 2 Surge Protection Device (SPD). Designed to guard against transient over-voltages and lightning strikes, it features Fusebox’s advanced SPD1MT2 device, which connects directly to the busbar—eliminating the need for a miniature circuit breaker and enhancing both safety and ease of installation.

Designed for Streamlined Installation

Like with the rest of the Fusebox line, the Fusebox F3021MZ is installer-friendly with a variety of 20–40mm knockouts for flexible cabling options.

Built to Last

Fully compliant with BS EN 61439-3 standard, rated IP2XC for electrical safety and constructed from rust-resistant galvanised steel, this unit combines durability with trusted performance.

Key Features of the Fusebox F3021MZ:

21 Way 100A Main Switch RCBO Consumer Unit with Surge Protection
Galvanised Metal Construction - Durable, corrosion-resistant housing.
35mm DIN Rail Device Mounting - Industry-standard fitting for easy RCBO mounting and reconfiguration.
20-40mm Cable Knockouts - Multiple entry points allow versatile cable routing options.
IP rating of IP2XC - Safeguards against solid objects for added safety
Tail Clamp Included (ACCF) - Provides secure cable retention for more reliable connections
Secure grommet strip - Protects cables at entry points and ensures tidy installations
Maximum Terminal Bar Capacity of 16mm - Supports a wide range of cable sizes
RAL 9001 Powder Coated - Clean, neutral finish
Easy to Install
Captive Screws included on the front cover
BS EN 61439-3 compliant
Voltage - 230V
Frequency - 50/60Hz
Terminal Bar Tightening Torque - 2NM
Tail Clamp Compatible - Yes
Double Bank - No
Height - 259mm
Width - 486mm
Depth - 113mm
Weight - 4kg
Warranty - 1 Year

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Model Number	F3021MZ
Brand	Fusebox
Range	RCBO Consumer Units
Product Type	21 Way RCBO Consumer Unit with Surge Protection
Surge Protection	Yes
Surge Protection Type	Type 2
Incomer Included	Yes
Incomer Type	Switch Disconnector
Tail Clamp Compatible	Yes, Tail Clamp Included (ACCF)
Double Bank	No
Pole	Double Pole
Maximum Terminal Bar Capacity	16mm²
Terminal Bar Tightening Torque	2Nm
Installation	Domestic
Current Rating	100A
Outgoing Ways	21 Way
Device Mounting	35mm DIN Rail
RCDs Included	No
MCBs Included	No
High Integrity	No
Metered	No
Knockouts	20-40mm
IP Rating	IP2XC
Power Supply	230V
Frequency	50/60Hz
Number of Phases	Single
Construction	Galvanised Metal
Finish	RAL 9001 Powder Coated
Mounting	Surface
Dimensions (HxWxD)	259mm x 486mm x 113mm
Weight	4kg
18th Edition Compliant	Yes
17th Edition Compliant	Yes
Standards	BS EN61439-3
Warranty	1 Year