63A 30mA 4 Pole Type B RCD (WEV463B-030)
18th Ed. Compliant
2-Year Warranty
UK Stock
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WEV463B-030 is a 63A 30mA 4 pole Type B RCD designed for applications where smooth DC residual currents and higher-frequency AC residual currents may be present. Suitable for EV charging installations, solar PV systems, UPS systems and frequency converters, it provides broader protection than conventional RCD types. Rated at 63A,...
WEV463B-030 is a 63A 30mA 4 pole Type B RCD designed for applications where smooth DC residual currents and higher-frequency AC residual currents may be present. Suitable for EV charging installations, solar PV systems, UPS systems and frequency converters, it provides broader protection than conventional RCD types.
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 see: Type B RCBOs for overload + leakage protection in one device, or PME fault detection units for EV installs on TN-C-S supplies.
Other Type B RCDs in the Range
| Model | Configuration | Best For |
|---|---|---|
| WEV240B-030 | 2 Pole • 40A • 30mA Type B RCD | Domestic EV chargers, solar PV and inverter-driven systems |
| WEV263B-030 | 2 Pole • 63A • 30mA Type B RCD | Higher-current single-phase EV, solar PV and renewable installations |
| WEV463B-030 | 4 Pole • 63A • 30mA Type B RCD | Three-phase EV chargers, solar PV systems and commercial installations |
When should I choose a 4 Pole Type B RCD?
A 4 Pole Type B RCD is typically used on three-phase installations where all live conductors and the neutral need to be disconnected together. The WEV463B-030 is suited to three-phase EV charging, solar PV systems, UPS equipment and other installations requiring comprehensive Type B residual current protection.
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.
| Product Code | WEV463B-030 |
| Device Type | Type B RCD |
| Poles | 4 Pole |
| Rated Current | 63A |
| Residual Current Rating | 30mA |
| Residual Current Detection | AC, Pulsating DC & Smooth DC |
| High Frequency Performance | Up to 1000Hz |
| Module Width | 4 Module |
| Dimensions | 72 x 87 x 79.5mm |
| Standards | IEC/EN 61008-1 & IEC/EN 62423 |
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
