4 Pole B-Type RCD – WEV463B-030 (63A, 30mA)
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WEV463B-030 is a 4 Pole Type B RCD (63A, 30mA) designed for higher-load applications where smooth DC and high-frequency leakage currents may be present. Unlike Type A RCDs, it detects AC, pulsed DC, and smooth DC residual currents up to 1000 Hz, ensuring full protection for EV, solar, UPS,...
The WEV463B-030 is a 4 Pole Type B RCD (63A, 30mA) designed for higher-load applications where smooth DC and high-frequency leakage currents may be present. Unlike Type A RCDs, it detects AC, pulsed DC, and smooth DC residual currents up to 1000 Hz, ensuring full protection for EV, solar, UPS, and industrial circuits.
Rated at 63A, this unit is the go-to choice for larger EV charging installations, heat pump boards, solar PV arrays, UPS systems, and variable speed drives. Fully compliant with IEC/EN 62423 and the 18th Edition Wiring Regulations, it provides reliable fault disconnection for demanding projects.
Installer Tip: Choose the 63A version where circuit demand exceeds 40A, or where multiple high-load devices (EV chargers, PV inverters, UPS) are on the same system.
Key Features
- 63A, 30mA, 4 Pole Type B RCD – SKU: WEV463B-030
- Detects AC, pulsed DC, and smooth DC leakage up to 1000 Hz
- Ideal for EV hubs, solar PV arrays, UPS systems, and VFDs
- Complies with IEC/EN 62423 and BS7671:2018+A2
- Rated for 230/400V AC three-phase systems
- Also available: WEV440B-030 (40A, 30mA)
Also see: Type B RCBOs for overload + leakage protection in one device, or PME fault detection units for EV installs on TN-C-S supplies.
Image for illustrative purposes only.
What makes this 63A RCD different from the 40A model?
The 40A WEV440B-030 suits smaller installs, while the 63A WEV463B-030 handles higher demand and multi-device setups such as EV hubs and solar arrays.
Is this RCD suitable for industrial use?
Yes – its 63A rating makes it suitable for industrial and commercial systems with inverter drives, UPS, or multiple chargers.
Is it compliant with UK regs?
Yes – tested to IEC/EN 62423 and fully compliant with BS7671:2018+A2:2022.
Do I need this for EV chargers?
Yes – most EV chargers mandate a Type B RCD. For TN-C-S (PME) systems, pair with a PEN fault detection device.
What sensitivity is this RCD?
30mA, designed for personal protection while meeting EV and solar compliance standards.
- SKU: WEV463B-030
- Type: Type B RCD
- Pole Count: 4 Pole
- Rated Current: 63A
- Sensitivity: 30mA
- Voltage Rating: 230/400V AC
- Frequency Response: Residual currents up to 1000 Hz
- Standards: IEC/EN 62423
- Variant Options: 63A (this product), 40A
Installation must be carried out by a qualified electrician in line with BS 7671. Type B RCDs are required wherever smooth DC leakage may occur.
- Select the 63A rating for high-load or multi-device installations
- Fit in a suitable enclosure with correct ventilation and spacing
- Check earth fault loop impedance for safe disconnection times
- Clearly label protected circuits during handover
