Type A RCBOs – Regulation-Compliant Protection
Our range of Type A RCBOs combines overcurrent and residual current protection in a single device, compliant with 18th Edition Amendment 2. Built for EV charger circuits, heat pumps, solar, and other inverter-driven loads, Type A devices detect AC and pulsating DC leakage that standard AC devices can miss.
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Available in 6A–50A ratings, with B or C curve options and both 6kA and 10kA breaking capacities, our Type A RCBOs cover everything from domestic installs to commercial boards. High immunity versions reduce nuisance trips, while 4-pole models ensure full disconnection in three-phase or sensitive applications.
- Amendment 2 compliant – required for EVs, heat pumps & inverter circuits
- High immunity options – designed to minimise false tripping
- 6kA & 10kA breaking capacity – for domestic and commercial installs
- B & C curve choices – match to circuit demand and inrush load
- Compact 1-module width – saves valuable board space
All RCBOs are UK-stocked, available for next-day delivery, and backed by a 2-year manufacturer warranty. See our returns policy for details.
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...
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,...
IP65 EV Kit – 32A C Curve A-Type RCBO - WPEV232C
£32.05
The WPEV232C is a 32A C Curve A-Type RCBO EV Kit supplied in a robust IP65 weatherproof enclosure. Designed for EV chargers, heat pumps, motors, and outdoor power circuits, it provides the required 30mA AC leakage and 6mA DC residual current detection to ensure compliance...
IP65 EV Kit – 40A C Curve A-Type RCBO - WPEV240C
£32.05
The WPEV240C is a 40A C Curve A-Type RCBO EV Kit supplied in a durable IP65 weatherproof ABS enclosure. It provides full 30mA AC leakage and 6mA DC residual current protection as required by the 18th Edition Wiring Regulations (Amendment 2) for EV charging circuits...
Choosing the Right Type A RCBO
When selecting a Type A RCBO, consider the circuit rating, curve type, and breaking capacity needed for your install. Our range ensures compliance and flexibility for both new builds and retrofits.
Key Considerations
- 6kA vs 10kA – 6kA for most domestic installs, 10kA for commercial or industrial boards.
- B vs C curve – B curve for standard domestic circuits, C curve for higher inrush or inductive loads.
- High immunity – essential on circuits with background leakage, such as EVs or heat pumps.
- Pole count – 1-module single pole + neutral or 4-pole options for three-phase installs.
Featured RCBOs
- A Type RCBO – WRT Range (6–50A, 10kA) – compact bi-directional devices for domestic and commercial installs.
- Mini Type A High Immunity RCBO (6–40A) – 1-module design for tight consumer units.
- 4 Pole A Type RCBO (6–40A) – ideal for three-phase and commercial setups.
- Type A RCBO EV Kit with SPD – pre-wired weatherproof kit for EV charger installs.
Trust & Compliance
All our Type A RCBOs are BS EN 61009 certified, tested for reliability, and manufactured to meet 18th Edition standards. With next-day delivery and a 2-year warranty, installers can fit with confidence knowing every unit is compliant and supported.
FAQs
Why use Type A instead of Type AC?
The 18th Edition now requires Type A devices on circuits feeding EVs, heat pumps, solar inverters, and similar loads. Type AC is no longer suitable for these applications.
What’s the difference between 6kA and 10kA?
6kA is suitable for domestic consumer units. 10kA devices are designed for commercial or industrial boards where fault levels are higher.
Do I need high immunity?
High immunity RCBOs are recommended for installs where background leakage may otherwise cause nuisance trips – common with EV chargers and heat pumps.
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Need help choosing the right RCBO? Contact our technical team for expert advice before ordering.