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.
3 Way EV RCBO Enclosure – Type A High Immunity 32A Type C (WMEV332C)
£27.50
The WMEV332C is a compact 3-way EV RCBO enclosure engineered for earth leakage and overload protection on single-phase EV charging circuits. Supplied with a 32A Type A High Immunity RCBO (Type C curve), it provides dependable 30mA AC and 6mA DC leakage protection, ensuring compliance...
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...
IP65 EV Kit – 40A B Curve A-Type RCBO - WPEV240B
£32.05
The WPEV240B is a 40A B Curve A-Type RCBO EV Kit built into a rugged IP65 weatherproof ABS enclosure. It provides 30mA AC leakage and 6mA DC residual current protection, ensuring compliance with the 18th Edition Wiring Regulations (Amendment 2) for EV charge points and...
High Immunity RCBO – 16A B Curve, Type A, 30mA
£18.67
The WER16B-030 is a 16A B Curve High Immunity Type A RCBO designed for solar PV, battery storage, and EV charger circuits. It provides combined overload, short-circuit, and 30mA residual current protection, with added resilience against nuisance tripping from harmonics or transient voltages. With double...
Choosing the Right Type A RCBO
When selecting a Type A RCBO, consider the circuit rating, curve type, and breaking capacity required for your install. Our range ensures compliance and flexibility for both new builds and retrofit work.
Key Considerations
- 6 kA vs 10 kA – 6 kA for most domestic installs, 10 kA 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-pump supplies.
- Pole count – 1-module single-pole + neutral or 4-pole options for three-phase installs.
Featured RCBOs
- Type A RCBO – WRT Range (6 – 50 A, 10 kA) – compact bi-directional devices for domestic and commercial installs.
- Mini Type A High Immunity RCBO (6 – 40 A) – 1-module design for tight consumer-unit applications.
- 4-Pole Type A RCBO (6 – 40 A) – ideal for three-phase and commercial setups.
- Type A RCBO EV Kit with SPD – pre-wired metal enclosure 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 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 6 kA and 10 kA?
6 kA is suitable for domestic consumer units. 10 kA 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.