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.
Weatherproof A-type EV RCBO Kit with Surge Protection
£34.16
Protect your EV installation with a weatherproof RCBO and surge protection unit built for outdoor reliability. Each unit in the WPRC series combines a Type A RCBO with an integrated Type 2 Surge Protection Device (SPD), all housed in a robust IP65-rated plastic enclosure for...
A Type Mini RCBO & Single Module 6A-40A B Curve 30mA High Immunity
£11.67
The WRB1 range of High Immunity Type A RCBOs delivers full overload and residual protection in a true 1-module width design – saving space while maintaining full compliance with modern circuit protection standards. These compact breakers feature switched live and neutral, Type A RCD sensitivity,...
WER High Immunity A Type RCBO's (Solar & EV)
£18.67
The WER range of High Immunity Type A RCBOs offers dual protection against overload and earth leakage faults – with additional resilience against nuisance tripping in challenging environments. Each unit features a twin-handle indicator system, helping electricians quickly identify whether a trip was caused by...
A-Type RCBO EV Kit with RCBO of your choice - 2 Way
£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 A Type 4 Pole RCBO
£37.14
This 4 Pole High Immunity RCBO offers robust protection for three-phase circuits where smooth DC leakage is present – making it ideal for EV installations, commercial panels, and high-integrity supply setups. Rated at 10kA and equipped with Type A sensitivity, it detects both AC and...
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.