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.
A Type Time Delay RCD – 63A 100mA, 4 Pole (WARTD463-100)
£30.25
The WARTD463-100 A-Type 100mA Time Delay RCD is a 4 Pole S-Type device rated at 63A. Its built-in time delay ensures upstream discrimination, allowing downstream RCDs to trip first and preventing unnecessary power loss. Ideal for three-phase distribution boards, EV charging hubs, and renewable installs...
High Immunity Type A 4 Pole RCBO – ADR440C
£37.14
The ADR440C High Immunity Type A 4 Pole RCBO is a 40A protective device designed for three-phase circuits where both AC and smooth DC leakage currents may occur. With 30mA residual current protection, 6mA DC detection, and a 10kA short-circuit rating, it delivers reliable protection...
4 Pole B-Type RCD – WEV463B-030 (63A, 30mA)
£158.30
The WEV463B-030 is a 4 Pole Type B RCD (63A, 30mA) designed for higher-load applications where smooth DC and high-frequency leakage currents may be present. Unlike Type A RCDs, it detects AC, pulsed DC, and smooth DC residual currents up to 1000 Hz, ensuring full...
3 Phase PME Fault Detection Unit 63DRSP (WARB5100C/PME63DRSP)
£122.60
Pre-wired in the UK and built to order – allow up to 3 working days for dispatch. The WARB5100C/PME63DRSP is the flagship 3 Phase PME Fault Detection Unit. It integrates a 100A MCB main switch, PME relay, a 63A Type A RCBO, and a Type...
3 Phase PME Fault Detection Unit SP (WARB5100C/PMESP)
£113.70
Pre-wired in the UK and built to order – allow up to 3 working days for dispatch. The WARB5100C/PMESP is a 3 Phase PME Fault Detection Unit with integrated Type 2 surge protection. It combines a 100A MCB main switch, PME relay, and SPD to...
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.