Pole RCBO – 6A B Curve, Type A, 30mA (WCED WFR406B-030)
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
Secure Payments With
The WCED WFR406B-030 is a 6A, B Curve, 4 Pole Type A RCBO designed to protect final circuits against overcurrent, earth leakage, and arc faults. With a switched neutral as standard, it ensures full isolation of live and neutral conductors, simplifying insulation resistance testing and boosting site safety. Compact and...
The WCED WFR406B-030 is a 6A, B Curve, 4 Pole Type A RCBO designed to protect final circuits against overcurrent, earth leakage, and arc faults. With a switched neutral as standard, it ensures full isolation of live and neutral conductors, simplifying insulation resistance testing and boosting site safety.
Compact and bidirectional, this RCBO is ideal for EV charging installations, heat pumps, solar PV systems, and commercial distribution boards where stability and compliance matter. Fully tested to BS EN 61009-1 and aligned with the 18th Edition Wiring Regulations.
Installer Tip: Choose a B Curve RCBO like this one for lighting and socket circuits with low inrush current. For circuits with motors, inverters, or EV chargers, select a C Curve alternative to avoid nuisance tripping.
Key Features
- 6A, B Curve: Fast trip response for lighting and small domestic loads
- 4 Pole RCBO: Provides full disconnection of live and neutral conductors
- Type A RCD: Detects AC and pulsating DC leakage currents
- Switched Neutral: Simplifies insulation resistance testing
- Bidirectional: Safe for inverter-based and renewable energy systems
- High Immunity: Stable in EV, solar, and electronic load environments
- Compact 1 Module Design: Saves space in consumer units
- Compliance: BS EN 61009-1, 18th Edition Wiring Regulations
Other Variants in the WFR4 Series
| Model | Rating | Curve | Link |
|---|---|---|---|
| WFR406B-030 (This Product) | 6A | B Curve | – |
| WFR406C-030 | 6A | C Curve | View Product |
| WFR410B-030 | 10A | B Curve | View Product |
| WFR410C-030 | 10A | C Curve | View Product |
| WFR416B-030 | 16A | B Curve | View Product |
| WFR416C-030 | 16A | C Curve | View Product |
| WFR420B-030 | 20A | B Curve | View Product |
| WFR420C-030 | 20A | C Curve | View Product |
| WFR432B-030 | 32A | B Curve | View Product |
| WFR432C-030 | 32A | C Curve | View Product |
| WFR440B-030 | 40A | B Curve | View Product |
| WFR440C-030 | 40A | C Curve | View Product |
What’s the WFR406B-030 best for?
It’s ideal for 6A lighting and socket circuits where fast fault response is needed, with full 4P isolation.
What’s the difference between B and C Curve?
B Curve trips faster and is best for resistive loads. C Curve tolerates higher inrush currents and suits EV chargers, motors, and solar systems.
Does this RCBO isolate neutral?
Yes – the WFR406B-030 includes a switched neutral for complete isolation and easier testing.
Is it compliant with UK regs?
Yes, it meets BS EN 61009-1 and BS 7671 (18th Edition Wiring Regulations).
Can it be used with renewable systems?
Yes – it’s bidirectional and high immunity, making it suitable for inverter-driven loads like solar, heat pumps, and EV systems.
- SKU: WFR406B-030
- Device Type: 4 Pole Type A RCBO
- Current Rating: 6A
- Curve: B
- Residual Current: 30mA, high immunity
- Poles: 4 (with switched neutral)
- Isolation: Full disconnection of live & neutral
- Dimensions (HxWxD): 67.6 × 71.6 × 67.5 mm
- Mounting: 35mm DIN rail
- Compliance: BS EN 61009-1, 18th Edition Wiring Regulations
This device must be installed by a qualified electrician in accordance with BS 7671. Select the correct curve and rating for the load characteristics.
- B Curve: For domestic/resistive loads (lighting, sockets)
- Mounting: Standard 35mm DIN rail
- Insulation Testing: Switched neutral allows safe IR tests without disconnection
- Use Cases: Small lighting circuits, socket outlets, low inrush demand circuits
