High Immunity RCBOs for EV, Solar & Disruption-Prone Circuits
High Immunity RCBOs are designed to prevent false tripping caused by harmonics, surges, or DC leakage – issues common in EV chargers, solar PV systems, UPS/three-phase setups, and noisy commercial circuits.
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These advanced Type A RCBOs provide full overload and earth leakage protection while filtering out interference that would cause nuisance trips in standard devices. Many models include switched neutrals, twin-action handles, and bi-directional operation for safer, easier installation.
- High immunity design – resists unwanted trips from electrical noise
- Type A protection – detects AC and pulsed DC leakage
- Single, 2-pole & 4-pole options – suited to domestic and commercial boards
- 18th Edition Amendment 2 compliant – trusted for modern installs
Need surge suppression alongside high immunity? Explore our Surge Protection Devices. For shipping details, see our delivery information or returns policy.
IP65 EV RCBO Kit – 32A B Curve A Type + Surge Protection (WPRC32BSP)
£34.16
The WPRC32BSP is a weatherproof IP65 EV RCBO kit combining a 32A B Curve Type A RCBO with a factory-fitted Type 2 Surge Protection Device (SPD). Built into a robust plastic enclosure, it delivers overload, short circuit, earth leakage, and transient surge protection in one...
High Immunity RCBO – 20A B Curve, Type A, 30mA
£18.67
The WER20B-030 is a 20A B Curve High Immunity Type A RCBO designed for residential and light commercial circuits including solar PV, battery storage, and EV-ready boards. It combines overload, short-circuit, and 30mA residual current protection in one device, while its high immunity design helps...
A-Type RCBO EV Kit with RCBO - 2 Way WMEV206B
£28.34
The A-Type RCBO EV Kit is a 2-way enclosure pre-fitted with your choice of Type A high immunity RCBO. Designed specifically for EV charger supplies, it provides overload, short-circuit, and earth leakage protection with 30mA AC + 6mA DC detection to meet 18th Edition Amendment...
High Immunity Type A 4 Pole RCBO – ADR432C
£37.14
The ADR432C High Immunity Type A 4 Pole RCBO is a 32A protective device designed for three-phase circuits where both AC and smooth DC leakage currents may occur. With 30mA residual current protection and 6mA DC detection, it’s ideal for EV charger installations, heat pump...
High Immunity RCBO – 40A C Curve, Type A, 30mA
£18.67
The WER40C-030 is a 40A C Curve High Immunity Type A RCBO designed for EV chargers, motors, heat pumps, and commercial inverter-fed systems. It combines overload, short-circuit, and 30mA residual current protection in a single device, with high immunity electronics to resist nuisance tripping from...
Why Choose High Immunity RCBOs?
Standard RCBOs can trip unnecessarily in environments with high electrical noise – wasting time on callouts and frustrating clients. High Immunity RCBOs are built to avoid this problem, maintaining reliable protection without nuisance disconnections.
Applications
- EV chargers – prevents false tripping from inverter harmonics. A proven option is the A-Type RCBO EV Kit (40A B-Curve).
- Solar PV systems – avoids disruption from DC leakage or backfeed. Many installers use the Single Module High Immunity A-Type RCBO.
- Battery storage & UPS – stable protection for sensitive systems.
- Commercial & industrial boards – reliable operation in noisy electrical environments. For larger setups, see the High Immunity 4-Pole A-Type RCBO.
Key Features
- Resists nuisance tripping – filters out harmonics and DC bleed
- Type A detection – protects against AC and pulsed DC faults
- Bi-directional operation – can be installed either way up
- Switched neutral options – safer isolation and clearer fault indication
FAQs on High Immunity RCBOs
What causes nuisance tripping?
Inverter-driven equipment like EV chargers and solar systems can create harmonics or DC leakage that cause standard RCBOs to trip unnecessarily. High Immunity RCBOs are designed to filter this out.
Are High Immunity RCBOs mandatory?
They are not mandatory under the 18th Edition, but are strongly recommended for circuits with renewables, EVs, or UPS systems where false trips are common.
Do High Immunity RCBOs still meet regulations?
Yes – they fully comply with BS EN 61009 and 18th Edition Amendment 2 wiring regulations.
Why Buy From Power & Data UK?
We stock UK-certified High Immunity RCBOs, available with next-day delivery and backed by a 2-year manufacturer warranty. If you need to return an item, see our returns policy. All products are tested and labelled for fast, reliable installation.