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 Phase Surge Protection Device Unit with 8 Way Metal IP40 enclosure 40A RCBO
£89.20
Pre-wired in the UK and tested before dispatch – allow up to 3 working days for shipping. The WRCUSP440C is a ready-to-fit 3-Phase Surge Protection Device (SPD) Unit supplied in an 8-way IP40 steel enclosure. It includes a 4-pole Type 2 SPD (20kA/40kA) paired with...
Single Module 2 Pole RCBO 32A C Curve WRN32C-030
£15.17
The WRN32C-030 is a 32A Type A RCBO with a C-curve tripping characteristic, supplied in a single-module, 2-pole format. Combining residual current (RCD) and overcurrent (MCB) protection, it safeguards circuits against AC and pulsating DC leakage. The built-in switched neutral ensures both live and neutral...
Single Module 2 Pole RCBO 20A C Curve WRN20C-030
£15.17
The WRN20C-030 is a 20A Type A RCBO with a C-curve tripping characteristic, designed in a compact single-module, 2-pole format. It combines residual current (RCD) and overcurrent (MCB) protection in one device, detecting both AC and pulsating DC leakage currents. The switched neutral ensures complete...
Single Module 2 Pole RCBO 16A C Curve WRN16C-030
£15.17
The WRN16C-030 is a 16A Type A RCBO with a C-curve tripping characteristic, supplied in a compact single-module, 2-pole design. It combines residual current (RCD) and overcurrent (MCB) protection in one device, detecting AC and pulsating DC leakage currents. With a switched neutral included, it...
Single Module 2 Pole RCBO 40A B Curve WRN40B-030
£15.17
The WRN40B-030 is a 40A Type A RCBO in a compact single-module, 2-pole design. It combines residual current (RCD) and overcurrent (MCB) protection in one device, detecting both AC and pulsating DC leakage faults. With a switched neutral built in, this RCBO fully isolates live...
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.