3 Way EV RCBO Enclosure – Type A High Immunity 32A Type B (WMEV332B)
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WMEV332B is a compact 3-way EV RCBO enclosure designed to provide both earth leakage and overload protection for single-phase EV charging circuits. Fitted with a 32A Type A High Immunity RCBO (Type B curve), it offers full compliance with BS 7671:2018 Amendment 2 and delivers dependable protection against AC,...
The WMEV332B is a compact 3-way EV RCBO enclosure designed to provide both earth leakage and overload protection for single-phase EV charging circuits. Fitted with a 32A Type A High Immunity RCBO (Type B curve), it offers full compliance with BS 7671:2018 Amendment 2 and delivers dependable protection against AC, pulsating DC, and 6mA smooth DC leakage.
Built for installers who demand clarity and compliance, this enclosure combines Type A RCBO protection with a durable metal body and a compact footprint — perfect for indoor EV installations where space and simplicity matter. It’s preconfigured for PME-ready installs and can be paired with surge protection or PEN fault detection units as required.
Installer Tip: Confirm the EV charger manufacturer’s curve requirements before ordering. Some chargers require Type C curves to accommodate higher inrush currents from onboard rectifiers.
- Supplied with a 32A Type A High Immunity RCBO (B curve)
- Detects AC, pulsating DC, and 6 mA smooth DC leakage
- Provides dual overload + residual current protection
- 3-module IP40 metal enclosure – compact and installer-friendly
- Supports PME and surge-protected configurations
- Built to order – typically dispatched within 3 working days
| Part Code | Description | RCBO Rating | Trip Curve |
|---|---|---|---|
| WMEV332B | 3 Way EV RCBO Enclosure – Type A High Immunity 32A Type B | 32 A | B |
| WMEV332C | 3 Way EV RCBO Enclosure – Type A High Immunity 32A Type C | 32 A | C |
| WMEV340B | 3 Way EV RCBO Enclosure – Type A High Immunity 40A Type B | 40 A | B |
| WMEV340C | 3 Way EV RCBO Enclosure – Type A High Immunity 40A Type C | 40 A | C |
The WMEV332B delivers fast, compliant fault detection and overcurrent protection for single-phase EV supply circuits. Compact, regulation-ready, and built to last — it’s the ideal choice for installers who value reliability, safety, and ease of fit-out under the 18th Edition standards.
Why use a Type A High Immunity RCBO for EVs?
It detects AC and DC fault currents and prevents nuisance trips from charger inverters or harmonics, keeping EV installations safe and stable.
Do I need a separate earth rod with this unit?
No. When paired with a PME fault detection device, it can be used safely on TN-C-S (PME) systems without a rod.
Can I choose a different rating or curve?
Yes. Alternate models are available in 32 A or 40 A with B or C curves to suit your design requirements.
Does it include surge protection?
No. This unit focuses on RCBO protection only. Add a separate SPD if required by your installation design.
Is it suitable for domestic EV chargers?
Yes. It’s purpose-built for single-phase residential charge points and compact environments like garages or meter cupboards.
- Model: WMEV332B
- Modules: 3
- Current Rating: 32 A
- Trip Curve: B
- Type: A High Immunity RCBO
- Earth Leakage: 30 mA AC / 6 mA DC
- Protection: Overload & Residual Current
- Enclosure: IP40 metal body
- Application: Single-phase EV charging supply
- Compliance: BS EN 61009, BS EN 61439, BS 7671 (18th Edition)
This RCBO enclosure must be installed by a qualified electrician. It’s designed for single-phase EV charge-point circuits requiring 6 mA DC leakage detection and overload protection. Always verify that the breaker rating and curve align with the charger’s load profile.
- Mount securely on a flat surface using appropriate fixings
- Maintain correct polarity and earth continuity throughout
- Test RCBO operation with an RCD tester before commissioning
- Install indoors in dry, ventilated locations (IP40 rated)
- Label clearly to identify as the EV supply point
