High Immunity RCBO – 16A B Curve, Type A, 30mA
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WER16B-030 is a 16A B Curve High Immunity Type A RCBO designed for solar PV, battery storage, and EV charger circuits. It provides combined overload, short-circuit, and 30mA residual current protection, with added resilience against nuisance tripping from harmonics or transient voltages. With double pole disconnection and bi-directional wiring,...
The WER16B-030 is a 16A B Curve High Immunity Type A RCBO designed for solar PV, battery storage, and EV charger circuits. It provides combined overload, short-circuit, and 30mA residual current protection, with added resilience against nuisance tripping from harmonics or transient voltages.
With double pole disconnection and bi-directional wiring, this RCBO is a reliable choice for inverter-fed systems and domestic boards where compliance with the 18th Edition Wiring Regulations (Amendment 2) is essential.
Installer Tip: Use the B Curve for standard circuits with low inrush current such as domestic lighting or socket outlets. For EV chargers, motors, or heat pumps, select the C Curve version.
Key Features
- 16A B Curve Type A RCBO – overload + earth leakage protection
- High immunity electronics – resists nuisance tripping
- 30mA residual current sensitivity – regulation compliant
- 10kA breaking capacity – suitable for residential and commercial installs
- Double pole disconnection – isolates live + neutral
- Bi-directional wiring – compatible with inverter-fed systems
- Complies with BS EN 61009 & 18th Edition Amendment 2
Compare High Immunity RCBOs
| Model | Rating | Curve | Application |
|---|---|---|---|
| WER16B-030 (This Product) | 16A | B Curve | Lighting / Domestic Circuits |
| WER16C-030 | 16A | C Curve | Motors / EV / Inrush Loads |
| WER20B-030 | 20A | B Curve | Domestic / Light Commercial |
| WER20C-030 | 20A | C Curve | EV / Motors |
What’s the difference between B and C Curve?
B Curve trips faster and is designed for low inrush loads (e.g. lighting, sockets). C Curve is for higher inrush loads like motors, EV chargers, or heat pumps.
Why is high immunity important?
It prevents nuisance tripping in noisy electrical environments such as solar inverter or EV charger installs.
Can I use this in solar PV systems?
Yes – its bi-directional wiring and high immunity make it a strong fit for inverter-fed solar circuits.
Does it meet 18th Edition requirements?
Yes – it provides 30mA Type A protection and meets Amendment 2 compliance standards.
- Type: A (detects AC + pulsating DC leakage)
- Rating: 16A
- Trip Curve: B
- Sensitivity: 30mA
- Breaking Capacity: 10kA
- Poles: 2 (double pole)
- Wiring: Bi-directional
- SKU: WER16B-030
- Standards: BS EN 61009 / IEC 61009
Designed for use in consumer units and distribution boards requiring high immunity RCBO protection. Especially suited for inverter-fed systems (solar PV, EV chargers, battery storage).
- DIN rail mounted
- Ensure load rating matches circuit demand
- Bi-directional wiring – line/load reversible
- Must be installed by a qualified electrician
