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.
IP65 EV Consumer Unit – 32A B Curve RCBO + SPD
£56.90
The WMIP32BSP is a weatherproof IP65 EV consumer unit pre-fitted with a 32A Type A RCBO (B Curve) and integrated Type 2 Surge Protection Device (SPD). Designed for domestic and commercial EV charger installs, it provides full overcurrent, earth leakage, and surge protection in one...
High Immunity Type A Mini RCBO – 25A C Curve (WRB125C-030)
£11.67
The WRB125C-030 High Immunity Type A Mini RCBO is a 25A C Curve protective device designed for circuits with motors, pumps, and appliances that generate higher inrush currents. Its compact 18mm design combines overload, short-circuit, and residual current protection in a single unit. With 30mA...
High Immunity Type A Mini RCBO – 25A B Curve (WRB125B-030)
£11.67
The WRB125B-030 High Immunity Type A Mini RCBO is a 25A B Curve protective device that combines overload, short-circuit, and residual current protection in a single compact unit. At just 18mm wide, it’s ideal for space-limited boards in residential or light commercial installs. With 30mA...
High Immunity Type A Mini RCBO – 6A B Curve (WRB106B-030)
£11.67
The WRB106B-030 High Immunity Type A Mini RCBO is a compact 6A B Curve device that combines residual current and overcurrent protection in a single 18mm module. Designed for boards where space is limited, it provides 30mA Type A protection, detecting AC and pulsating DC...
High Immunity Type A Mini RCBO – 10A C Curve (WRB110C-030)
£11.67
The WRB110C-030 High Immunity Type A Mini RCBO is a 10A C Curve device designed for circuits with higher inrush currents. At just 18mm wide, it provides both residual current and overcurrent protection in a compact module. With 30mA Type A sensitivity and a high-immunity...
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.