A-Type RCBO EV Kit – 2 Way 20 A B Curve (WMEV220B)
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WMEV220B is a 2-way A-Type RCBO EV Kit fitted with a 20 A B-curve high-immunity Type A RCBO. It delivers overload, short-circuit and earth-leakage protection (30 mA AC + 6 mA DC) in line with 18th Edition Amendment 2, making it ideal for modern EV charger installations requiring reliable...
The WMEV220B is a 2-way A-Type RCBO EV Kit fitted with a 20 A B-curve high-immunity Type A RCBO. It delivers overload, short-circuit and earth-leakage protection (30 mA AC + 6 mA DC) in line with 18th Edition Amendment 2, making it ideal for modern EV charger installations requiring reliable dual-pole isolation.
This variant is perfect for domestic or light-commercial EV chargers drawing around 4 – 5 kW, where a standard B-curve device provides stable protection without nuisance trips. It arrives pre-assembled in a compact 2-way steel enclosure ready for immediate fit-out and testing.
Installer Tip: Use a 20 A B-curve kit for chargers drawing up to ≈ 4.6 kW (20 A continuous). If the charger spec notes transformer input or high inrush, switch to a C-curve variant for better surge immunity.
- 20 A B-curve Type A RCBO with 30 mA AC + 6 mA DC detection
- Dual-pole (1P + N) isolation for safe EV maintenance
- Pre-fitted and factory tested in a 2-way steel enclosure
- High-immunity design reduces nuisance tripping on EV loads
- Complies with BS EN 61009-1 and BS 7671 (A2)
| Part Code | Rating | Curve | Typical Use |
|---|---|---|---|
| WMEV216B | 16 A | B | Standard 3.6 kW chargers |
| WMEV220B | 20 A | B | Higher-load EV circuits (≈ 4.6 kW) |
| WMEV225B | 25 A | B | Commercial or shared-supply installations |
Each kit combines Type A RCBO protection with a durable steel enclosure for safe, regulation-ready installations. For PEN fault and load balancing compliance, add our PME Fault Detection Unit. For surge defence, fit a Single Module SPD.
Is this kit compliant for EV charger circuits?
Yes – it includes a Type A RCBO with 30 mA AC + 6 mA DC detection as required under 18th Edition Amendment 2.
When should I use a 20 A B Curve model?
Use this variant for chargers drawing up to ≈ 4.6 kW or when your supply design specifies a 20 A protective device.
Does it isolate both live and neutral?
Yes – the 1P + N RCBO switches both conductors for complete isolation.
Can I add surge protection?
Yes – use our Single Module SPD or fit upstream surge protection as needed.
Is it suitable for PV as well as EV applications?
Yes – the bi-directional Type A RCBO is compatible with EV and solar PV circuits.
- Part Code: WMEV220B
- Enclosure: 2-way steel with hinged lid
- Device: Type A RCBO (high immunity)
- Rated Current (In): 20 A
- Curve: B
- Earth Leakage: 30 mA AC + 6 mA DC
- Breaking Capacity: 6 kA
- Poles: 1P + N (switched neutral)
- Standards: BS EN 61009-1; BS 7671:2018 (A2)
- Typical Use: EV circuits drawing up to ≈ 4.6 kW
Supplied pre-assembled for quick installation. All final testing must be carried out by a qualified electrician.
- Mount in a dry or IP-rated location for outdoor use
- Select 20 A B-curve for chargers up to ≈ 4.6 kW
- Verify Zs and disconnection times to BS 7671 (A2)
- Add upstream SPD if required by site or spec sheet
