A-Type RCBO EV Kit – 2 Way 40 A B Curve (WMEV240B)
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WMEV240B is a 2-way A-Type RCBO EV Kit fitted with a 40 A B-curve high-immunity Type A RCBO. It provides overload, short-circuit and earth-leakage protection (30 mA AC + 6 mA DC) to fully meet the 18th Edition Amendment 2 requirements for EV charging points. Designed for heavier single-phase...
The WMEV240B is a 2-way A-Type RCBO EV Kit fitted with a 40 A B-curve high-immunity Type A RCBO. It provides overload, short-circuit and earth-leakage protection (30 mA AC + 6 mA DC) to fully meet the 18th Edition Amendment 2 requirements for EV charging points.
Designed for heavier single-phase or light commercial EV circuits drawing up to 9 kW, this kit offers full dual-pole isolation in a compact, installer-friendly steel enclosure. The high-immunity RCBO minimises nuisance tripping when charging vehicles with on-board filters or high startup currents.
Installer Tip: Select a 40 A B-curve for high-power EV chargers or dual-socket setups on dedicated feeds. If the charger has transformer input or variable inrush, consider a C-curve version for enhanced surge tolerance.
- 40 A B-curve Type A RCBO (30 mA AC + 6 mA DC detection)
- Dual-pole (1P + N) isolation for safe live and neutral disconnection
- 2-way steel enclosure with hinged cover and factory wiring
- High-immunity Type A design reduces false trips on EV circuits
- Complies with BS EN 61009-1 and BS 7671 (Amendment 2)
| Part Code | Rating | Curve | Typical Use |
|---|---|---|---|
| WMEV232B | 32 A | B | 7 kW domestic EV chargers |
| WMEV240B | 40 A | B | High-load or commercial EV installations |
| WMEV240C | 40 A | C | Chargers with transformer or inrush profiles |
Every kit combines Type A RCBO protection and a durable steel enclosure for fast, compliant EV installations. For PEN fault compliance and load balancing, add our PME Fault Detection Unit. For surge defence, fit a Single Module SPD.
Is this kit compliant for EV charging installations?
Yes – it meets 18th Edition Amendment 2 with Type A RCBO (30 mA AC + 6 mA DC detection).
When should I use a 40 A B Curve variant?
Use for high-power chargers or dual-socket setups drawing up to ≈ 9 kW on a dedicated feed.
Does it switch both live and neutral?
Yes – the 1P + N RCBO isolates both conductors for safe maintenance and fault clearance.
Can I add surge protection?
Yes – use our Single Module SPD or install upstream surge protection if specified.
Is it suitable for PV as well as EV circuits?
Yes – the Type A RCBO is bi-directional and safe for both EV and solar PV applications.
- Part Code: WMEV240B
- Enclosure: 2-way steel with hinged lid
- Device: Type A RCBO (high immunity)
- Rated Current (In): 40 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: High-load domestic or light-commercial EV circuits (up to ≈ 9 kW)
The WMEV240B kit is delivered pre-assembled for quick installation. All testing and commissioning must be carried out by a qualified electrician.
- Mount in a dry or IP-rated location if external
- Use 40 A B-curve for high-load or dual EV chargers
- Confirm Zs, R1 + R2 and disconnection times to BS 7671 A2
- Add SPD protection upstream if required by design spec
