High Immunity A Type 4 Pole RCBO
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 pulsating DC earth leakage currents...
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 pulsating DC earth leakage currents up to 6mA.
Built with a twin-handle trip system, it allows fast identification of whether a fault is due to overload or residual current - helping electricians diagnose and reset quicker on site.
- Type A RCBO – detects AC + pulsating DC leakage
- High immunity design – reduces nuisance tripping
- DC detection: 6mA smooth DC compatible
- Twin-handle trip indication: overload vs earth leakage
- 10kA short-circuit rating – for high-integrity circuits
- Available in: 32A or 40A variants
Perfect for EV, solar inverter, UPS, and commercial three-phase protection where both reliability and regulation compliance matter.
What is the advantage of a high immunity RCBO?
It reduces nuisance tripping caused by transient signals or interference, making it ideal for EV, commercial, and solar systems with higher harmonics or residual ripple.
Can this be used for EV charger protection?
Yes – the 6mA DC detection is essential for EV chargers that may produce smooth DC leakage currents.
Is this RCBO compliant with the 18th Edition Amendment 2?
Yes – it meets all relevant BS EN standards and DC detection thresholds required for EV and modern installs.
- Product Code: ADR432C-30 (32A), ADR440C-30 (40A)
- Poles: 4 Pole
- Rated Current: 32A or 40A
- Trip Sensitivity: 30mA AC + 6mA DC
- RCD Type: Type A
- Immunity Class: High Immunity
- Short-Circuit Rating: 10kA
- Voltage: 400V AC (3P+N)
- Conforms to: BS EN 61009-1 / BS EN 62423 / 18th Edition Wiring Regs
Install this RCBO in any 4-module DIN rail space within consumer units or commercial boards requiring high-integrity fault protection. Always verify compatibility with EV charger, inverter, or circuit type before selection.
- Use as main incomer or final circuit protection
- Twin handle helps identify fault type at a glance
- Only install in circuits requiring 6mA DC detection
- Use torque screwdriver to manufacturer’s recommended settings
