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 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...
High Immunity RCBO – 16A C Curve, Type A, 30mA
£18.67
The WER16C-030 is a 16A C Curve High Immunity Type A RCBO built for EV chargers, motors, heat pumps, and inverter-fed systems. It provides overload, short-circuit, and 30mA residual current protection, while the high immunity design prevents nuisance tripping in circuits subject to harmonics and...
High Immunity RCBO – 20A C Curve, Type A, 30mA
£18.67
The WER20C-030 is a 20A C Curve High Immunity Type A RCBO designed for EV chargers, motors, heat pumps, and inverter-fed systems. It provides combined overload, short-circuit, and 30mA residual current protection, while high immunity electronics reduce nuisance tripping from harmonics and transient voltages. Featuring...
High Immunity RCBO – 32A B Curve, Type A, 30mA
£18.67
The WER32B-030 is a 32A B Curve High Immunity Type A RCBO, engineered for solar PV, battery storage, and EV-ready consumer units. It provides combined overload, short-circuit, and 30mA residual current protection with added immunity against nuisance tripping in inverter-heavy environments. Built with double pole...
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.