4 Pole RCBO – 32A B Curve, Type A, 30mA (WCED WFR432B-030)
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
Secure Payments With
The WCED WFR432B-030 is a 32A, B Curve, 4 Pole Type A RCBO designed for reliable protection in medium to high-load circuits. It combines overcurrent protection and earth leakage detection in one device, while the switched neutral ensures full isolation of all conductors for safer testing, fault finding, and compliance...
The WCED WFR432B-030 is a 32A, B Curve, 4 Pole Type A RCBO designed for reliable protection in medium to high-load circuits. It combines overcurrent protection and earth leakage detection in one device, while the switched neutral ensures full isolation of all conductors for safer testing, fault finding, and compliance with BS 7671 (18th Edition).
With its B Curve trip characteristic, the WFR432B-030 trips quickly, making it the right choice for circuits with resistive or lightly inductive loads such as heating systems, lighting banks, and small commercial appliances. Its bidirectional capability and high immunity design also support renewable and EV installations where reliability is critical.
Installer Tip: Select the 32A B Curve for circuits with stable load demand. For installations with high inrush current (motors, EV chargers, solar), use the C Curve version.
Key Features
- 32A, B Curve: Fast tripping for resistive and light inductive loads
- 4 Pole Isolation: Disconnects all live conductors plus neutral
- Type A RCD: Detects AC and pulsating DC leakage
- Switched Neutral: Simplifies insulation resistance testing
- High Immunity: Stable performance under electronic loads
- Bidirectional: Suitable for renewables and inverter systems
- DIN Rail Mount: Compact 17.8mm width
- Compliance: BS EN 61009-1 and 18th Edition Wiring Regulations
Other Variants in the WFR4 Series
| Model | Rating | Curve | Link |
|---|---|---|---|
| WFR406B-030 | 6A | B | View Product |
| WFR406C-030 | 6A | C | View Product |
| WFR410B-030 | 10A | B | View Product |
| WFR410C-030 | 10A | C | View Product |
| WFR416B-030 | 16A | B | View Product |
| WFR416C-030 | 16A | C | View Product |
| WFR420B-030 | 20A | B | View Product |
| WFR420C-030 | 20A | C | View Product |
| WFR432B-030 (This Product) | 32A | B | – |
| WFR432C-030 | 32A | C | View Product |
| WFR440B-030 | 40A | B | View Product |
| WFR440C-030 | 40A | C | View Product |
What’s the WFR432B-030 best suited for?
It’s ideal for 32A circuits with steady loads like heating banks, lighting circuits, and small commercial appliances.
What’s the difference between B and C Curve?
B Curve trips faster for resistive loads. C Curve tolerates higher inrush current for motors, EV chargers, and renewable systems.
Does this RCBO isolate neutral?
Yes – it provides full 4-pole isolation with switched neutral.
Is this RCBO compliant with UK standards?
Yes – it complies with BS EN 61009-1 and the 18th Edition Wiring Regulations.
Can this be used in renewable or EV systems?
Yes – its high immunity and bidirectional design support EV chargers, solar PV, and inverter-driven circuits.
- SKU: WFR432B-030
- Device Type: 4 Pole Type A RCBO
- Current Rating: 32A
- Curve: B
- Residual Current: 30mA, high immunity
- Poles: 4 (with switched neutral)
- Isolation: Disconnects live & neutral
- Dimensions (HxWxD): 67.6 × 71.6 × 67.5 mm
- Mounting: 35mm DIN rail
- Compliance: BS EN 61009-1, 18th Edition Wiring Regulations
Install in accordance with BS 7671 (18th Edition). Ensure the current rating and trip curve match the circuit characteristics.
- B Curve: Use for domestic/resistive circuits (lighting, heating, sockets)
- Mounting: 35mm DIN rail compatible
- Testing: Switched neutral enables safe insulation resistance tests
- Applications: Domestic, commercial, and renewable-ready circuits
