High Immunity Type A 4 Pole RCBO – ADR432C
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The ADR432C High Immunity Type A 4 Pole RCBO is a 32A protective device designed for three-phase circuits where both AC and smooth DC leakage currents may occur. With 30mA residual current protection and 6mA DC detection, it’s ideal for EV charger installations, heat pump systems, and commercial boards that...
The ADR432C High Immunity Type A 4 Pole RCBO is a 32A protective device designed for three-phase circuits where both AC and smooth DC leakage currents may occur. With 30mA residual current protection and 6mA DC detection, it’s ideal for EV charger installations, heat pump systems, and commercial boards that require full compliance with the 18th Edition.
Installer Tip: The twin-handle trip indicator quickly shows whether the fault was overload or residual current, helping you reset and test faster on site.
Key Features
- 32A rated current – suited to smaller three-phase loads
- Type A sensitivity – detects AC + pulsating DC leakage
- High immunity design – reduces nuisance tripping
- 6mA DC detection – required for EV and inverter-driven systems
- Twin-handle indicator – overload vs leakage fault display
- 10kA short-circuit rating – high-integrity fault protection
- 400V AC, 3P+N – designed for three-phase circuits
Compare High Immunity RCBO Variants
| Model | Rated Current | Poles | Type | Immunity | Breaking Capacity |
|---|---|---|---|---|---|
| ADR432C (This Product) | 32A | 4 Pole (3P+N) | Type A | High Immunity | 10kA |
| ADR440C | 40A | 4 Pole (3P+N) | Type A | High Immunity | 10kA |
What makes this RCBO ‘high immunity’?
It’s engineered to resist nuisance tripping from transient voltages or harmonics, making it suitable for EV and renewable installs with inverter-driven loads.
Is the ADR432C suitable for EV charger circuits?
Yes. With 6mA DC detection and full 4-pole disconnection, it meets EV installation requirements under the 18th Edition regs.
What’s the difference between ADR432C and ADR440C?
The ADR432C is rated at 32A, while the ADR440C offers 40A for higher load circuits. Both share the same high-immunity Type A protection design.
Does this unit come pre-wired?
No – this is a standalone RCBO for board installation. It must be wired into the distribution unit by a qualified electrician.
- Product Code: ADR432C-30
- Poles: 4 Pole (3P+N)
- Rated Current: 32A
- Trip Sensitivity: 30mA AC + 6mA DC
- RCD Type: Type A
- Immunity Class: High Immunity
- Short-Circuit Rating: 10kA
- Voltage: 400V AC
- Standards: BS EN 61009-1, BS EN 62423, 18th Edition Compliant
Install the ADR432C within any 4-module DIN rail slot in compatible consumer units or distribution boards. It is designed for circuits requiring high-integrity protection with DC leakage detection.
- Use for both incomer and final circuit protection
- Follow torque settings as per manufacturer guidance
- Confirm circuit requirement for 6mA DC detection before install
- Ensure correct polarity and neutral connections to avoid false trips
