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 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. For more demanding solar and heat pump installs, see our Type B Heat Pump RCD.

• 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 boards, solar inverter circuits, UPS, and commercial three-phase protection where both reliability and regulation compliance matter.

• 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