High Immunity RCBO – 32A B Curve, Type A, 30mA
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WER32B-030 is a 32A B Curve High Immunity Type A RCBO, engineered for solar PV, battery storage, and EV-ready consumer units. It provides combined overload, short-circuit, and 30mA residual current protection with added immunity against nuisance tripping in inverter-heavy environments. Built with double pole disconnection and bi-directional wiring, this...
The WER32B-030 is a 32A B Curve High Immunity Type A RCBO, engineered for solar PV, battery storage, and EV-ready consumer units. It provides combined overload, short-circuit, and 30mA residual current protection with added immunity against nuisance tripping in inverter-heavy environments.
Built with double pole disconnection and bi-directional wiring, this RCBO ensures safe, compliant installs in line with the 18th Edition Wiring Regulations (Amendment 2).
Installer Tip: The B Curve profile is intended for general domestic and commercial loads with low inrush current. For EV chargers, motors, or heat pumps, the C Curve version is a better fit.
Key Features
- 32A B Curve Type A RCBO – overload + earth leakage protection
- High immunity design – resists false trips from harmonics
- 30mA sensitivity – regulation compliant
- 10kA breaking capacity – durable for residential and commercial use
- Double pole disconnection – isolates both live + neutral
- Bi-directional wiring – line/load reversible
- Meets BS EN 61009 and 18th Edition Amendment 2
Compare High Immunity RCBOs
| Model | Rating | Curve | Application |
|---|---|---|---|
| WER20B-030 | 20A | B Curve | Domestic / Light Commercial |
| WER32B-030 (This Product) | 32A | B Curve | General Loads / Consumer Units |
| WER32C-030 | 32A | C Curve | EV / Motors / Inrush Loads |
| WER40B-030 | 40A | B Curve | Heavier Duty Circuits |
Is this suitable for EV installs?
B Curve RCBOs can be used, but C Curve models are generally preferred for EV chargers and motors due to inrush currents.
Why high immunity?
To prevent unwanted trips caused by harmonics and switching surges in solar and inverter-fed systems.
Does it isolate both poles?
Yes – live and neutral conductors are both disconnected on fault.
Can I use this for solar PV circuits?
Yes, its bi-directional wiring and high immunity make it compatible with inverter-fed solar installs.
- Type: A (AC + pulsating DC leakage detection)
- Rating: 32A
- Trip Curve: B
- Sensitivity: 30mA
- Breaking Capacity: 10kA
- Poles: 2 (double pole)
- Wiring: Bi-directional
- SKU: WER32B-030
- Standards: BS EN 61009 / IEC 61009
Ideal for consumer units and boards where 32A B Curve protection is required. Designed for inverter-fed and domestic circuits requiring high immunity RCBOs.
- DIN rail mounting
- Check load matches rating
- Bi-directional wiring simplifies install
- Qualified electrician installation required
