Three Phase Boards & Accessories
Everything you need for three-phase installs in one place – distribution boards, surge kits, PME protection and more. All components are built to BS standards, clearly labelled, and available with next-day or Saturday delivery across the UK.
Read more about three-phase boards
A three-phase board (also called a 3 phase fuse board or 3 phase consumer unit) is designed to distribute incoming three-phase power across multiple circuits. These boards are commonly used in industrial switchgear installs, where balancing load and ensuring fault protection is critical.
Typical use cases include motor circuits, HVAC plant, lighting control, and renewable system integration with heat pump and EV-ready systems.
All units are manufactured in line with BS EN 61439 and suitable for installs that must meet 18th Edition Amendment 2. See our returns policy for hassle-free support.
4 Pole RCBO – 20A C Curve, Type A, 30mA (WCED WFR420C-030)
£37.19
The WCED WFR420C-030 is a 20A, C Curve, 4 Pole Type A RCBO that combines overcurrent protection and earth leakage protection in one device. Its switched neutral ensures full isolation of all conductors, delivering safer fault handling and compliance with BS 7671 (18th Edition). With...
4 Pole RCBO – 16A C Curve, Type A, 30mA (WCED WFR416C-030)
£37.19
The WCED WFR416C-030 is a 16A, C Curve, 4 Pole Type A RCBO that integrates MCB protection and RCD protection in a single device. With a switched neutral, it guarantees full isolation of all conductors during faults or testing, meeting BS 7671 (18th Edition) standards....
4 Pole RCBO – 10A C Curve, Type A, 30mA (WCED WFR410C-030)
£37.19
The WCED WFR410C-030 is a 10A, C Curve, 4 Pole Type A RCBO that provides combined overcurrent protection and residual current protection in a compact, single-module device. With its switched neutral, it fully isolates all conductors for safer fault finding and compliance with BS 7671...
4 Pole RCBO – 6A C Curve, Type A, 30mA (WCED WFR406C-030)
£37.19
The WCED WFR406C-030 is a 6A, C Curve, 4 Pole Type A RCBO that combines overcurrent and earth leakage protection in one device. Featuring a switched neutral, it fully isolates all conductors for safer maintenance, testing, and compliance with BS 7671 (18th Edition). With its...
4 Pole RCBO – 40A B Curve, Type A, 30mA (WCED WFR440B-030)
£37.19
The WCED WFR440B-030 is a 40A, B Curve, 4 Pole Type A RCBO that delivers comprehensive protection for higher-capacity circuits. It combines MCB overcurrent protection with RCD earth leakage detection in one device, ensuring both live and neutral conductors are fully isolated through the switched...
What Is a Three Phase Board?
A three phase board, sometimes called a fuse board or consumer unit, splits incoming three-phase supply into manageable circuits. This ensures loads are balanced, fault protection is applied, and your installation meets UK wiring standards.
Where to Use Three Phase Fuse Boards
- Commercial and industrial premises with high load demand
- Motor circuits, HVAC, or plant equipment
- Lighting and power separation for safety
- Renewables and hybrid installs needing surge and PME protection
Standards & Compliance
All our three-phase boards and accessories are supplied to BS EN 61439 and IEC standards, with clear labelling for straightforward installation. Devices comply with 18th Edition Amendment 2, covering mandatory surge protection and PME safety requirements.
Explore Related Categories
Need to expand your installation? See our full range of surge protection devices, PME fault detection units, and enclosures.
Featured Three Phase Products
- 125A Three Phase Distribution Board – scalable protection for workshops, plantrooms, and industrial switchgear.
- 3-Phase SPD with MCB – pre-wired protection kit for transient overvoltage compliance.
- Three Phase PME Fault Detection Unit – essential for EV and renewable installs requiring PEN monitoring.
Trusted Supply
All boards and accessories are in stock and dispatched from our UK warehouse. Orders over £30 qualify for next-day delivery, with easy Saturday upgrade options. If you need to return an item, review our returns policy. Unsure which product suits your project? Contact our experts for tailored guidance.