High Immunity RCBOs for Noise-Prone Circuits

High immunity RCBOs are designed for circuits where standard protection may be more prone to nuisance tripping. They are commonly used on EV charger supplies, solar PV circuits, UPS equipment, heat pumps and other inverter-led loads where harmonics, leakage current or electrical noise can cause unwanted disconnections.

This range is focused on RCBOs for nuisance tripping prevention, not general Type A RCBO selection. For standard Type A devices, view our Type A RCBOs. Use this collection where circuit stability is the priority on sensitive or noise-prone installs.

High immunity RCBOs still provide combined residual current and overcurrent protection, but are built to improve circuit stability where standard RCBOs may trip too easily. This makes them useful for installers dealing with intermittent faults, sensitive equipment or repeated callouts caused by nuisance tripping.

• Reduced nuisance tripping – useful on circuits affected by leakage current or electrical noise
• Inverter-led circuit support – commonly used for EV, solar, UPS and heat pump loads
• Overload and earth leakage protection – RCBO protection in one device
• Bi-directional and switched neutral options – available on selected models

For related protection, browse our EV RCBOs, Type A RCBOs, Type B RCDs and surge protection devices.