A-Type RCBO EV Kit – 2 Way 20 A B Curve (WMEV220B)

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.

• 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)

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.

• 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 Z_s and disconnection times to BS 7671 (A2)
• Add upstream SPD if required by site or spec sheet

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.