4 Way Consumer Units for EV, Heat Pump & Outbuilding Circuits
4 Way Consumer Units are compact, metal-enclosed boards designed for small circuits that still need full 18th Edition protection. They’re commonly used for EV chargers, heat pumps, garden offices, garages and outbuildings where a single protected feed or simple distribution point is required.
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Each unit is built with Type A RCBO protection and a Type 2 surge device for compliance with Amendment 2. Installers can choose between 32A or 40A loading, and B-curve or C-curve variants depending on inrush behaviour and circuit design. The metal enclosure provides added fire safety and meets all regulatory requirements. These compact boards sit within our wider Consumer Units range.
- Pre-wired metal construction for fast, reliable installation
- 32A & 40A options suitable for EV, heat pump and small building feeds
- Type A RCBO for AC and pulsed DC fault protection
- Type 2 surge protection included as standard
- Compact 4-module layout for tight spaces and retrofit work
If you require larger boards or additional outgoing ways, consider stepping up to a 6 way or 8 way model. For shipping and returns, check the delivery information or returns policy.
4 Way Metal EV Protection Unit – 32A B Curve A-Type RCBO + SPD (WMRC32BSP)
£31.90
The WMRC32BSP is a 4 Way Metal EV Protection Unit combining an A-Type bi-directional RCBO with a Type 2 Surge Protection Device inside a durable steel enclosure. Designed for single-phase EV charger circuits, it delivers overload, earth-leakage, and transient-voltage protection in one pre-wired, regulation-ready board....
4 Way Metal EV Protection Unit – 40A B Curve A-Type RCBO + SPD (WMRC40BSP)
£31.90
The WMRC40BSP is a 4 Way Metal EV Protection Unit combining a 40 A B-Curve A-Type RCBO and Type 2 Surge Protection Device inside a compact steel enclosure. Designed for higher-load EV charger circuits, it delivers overload, earth-leakage, and transient surge protection in one pre-wired,...
4 Way Metal EV Protection Unit – 32A C Curve A-Type RCBO + SPD (WMRC32CSP)
£31.90
The WMRC32CSP is a 4 Way Metal EV Protection Unit equipped with a 32 A C-Curve A-Type RCBO and Type 2 SPD inside a robust steel housing. Designed for commercial and higher inrush EV charger applications, it delivers overload, earth-leakage, and surge protection in one...
4 Way Metal EV Protection Unit – 40A C Curve A-Type RCBO + SPD (WMRC40CSP)
£31.90
The WMRC40CSP is a 4 Way Metal EV Protection Unit that combines a 40 A C-Curve A-Type RCBO with a Type 2 SPD inside a durable, powder-coated steel housing. Built for EV charger installations with higher inrush or inductive loads, it delivers overload, earth-leakage, and...
What Is a 4 Way Consumer Unit Used For?
A 4 way consumer unit is ideal when only a small number of circuits are needed, or when running a single dedicated supply. They are frequently used for EV charger feeds, heat pumps, garages, garden offices and other outbuildings where a compact distribution point is more practical than a full-size board.
Typical Applications
- EV charger installations requiring a 32A or 40A protected supply
- Heat pumps that need Type A RCBO protection for inverter-driven loads
- Garden rooms and offices where stable, surge-protected power is essential
- Garages and external buildings needing simple, compliant distribution
Regulation & Compliance
All boards in this category meet the requirements of BS 7671 (18th Edition), including:
- Type A RCBOs for AC and pulsed DC fault detection
- Type 2 surge protection for Amendment 2 compliance
- Metal enclosures in line with regulation 421.1.201
Choosing the Right Variant
32A units are ideal for most domestic EV chargers and heat pump feeds.
40A units suit higher loads or commercial applications where extra headroom is required.
B-curve options suit standard domestic loads, while C-curve breakers handle higher inrush currents from motors or power electronics.
Why Installers Choose 4 Way Boards
They are compact, fast to fit and fully compliant with modern regulations. With surge protection and Type A RCBO coverage included, these units provide a reliable, ready-to-install solution for modern circuits. All products come with a 2-year manufacturer warranty and are shipped from a UK warehouse with next-day delivery available.