IP65 EV Consumer Unit – 40A B Curve RCBO + SPD
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WMIP40BSP is a heavy-duty IP65 EV consumer unit fitted with a 40A Type A RCBO (B Curve) and integrated Type 2 SPD. Designed for EV charger installations with higher current demand, it delivers full overcurrent, earth leakage, and surge protection in a lockable metal enclosure built to withstand outdoor...
The WMIP40BSP is a heavy-duty IP65 EV consumer unit fitted with a 40A Type A RCBO (B Curve) and integrated Type 2 SPD. Designed for EV charger installations with higher current demand, it delivers full overcurrent, earth leakage, and surge protection in a lockable metal enclosure built to withstand outdoor conditions.
The robust IP65 steel housing makes it ideal for driveways, garages, and commercial EV bays, while the dual-handle RCBO provides quick fault identification: black handle = MCB fault, white handle = RCD fault. This reduces downtime and speeds up troubleshooting on site.
Installer Tip: Select the 40A B Curve variant for higher-rated EV charge points or sites where the charger spec requires additional headroom compared to the 32A model.
Key Features
- 40A Type A RCBO – B Curve, dual-handle fault indication
- Type 2 SPD included – visual status (green/red)
- IP65-rated metal enclosure – weatherproof and lockable
- 18th Edition Amendment 2 compliant for EV circuits
- Supplied pre-assembled and labelled for quick installation
- Padlock-compatible lid for added security
Compare IP65 EV Consumer Unit Variants
| Model | RCBO Rating | Curve | SPD |
|---|---|---|---|
| WMIP32BSP | 32A | B Curve | Type 2 SPD |
| WMIP40BSP (This Product) | 40A | B Curve | Type 2 SPD |
| WMIP32CSP | 32A | C Curve | Type 2 SPD |
| WMIP40CSP | 40A | C Curve | Type 2 SPD |
When should I use a 40A B Curve instead of 32A?
The 40A B Curve RCBO is best for EV chargers with higher current demand or where additional margin is required beyond 32A.
Is the WMIP40BSP compliant with Amendment 2?
Yes – it meets BS 7671:2018 A2, with a Type A RCBO and Type 2 SPD included as standard.
Can this be installed outside?
Yes – the IP65-rated metal enclosure is built for outdoor locations such as driveways, garages, and public EV bays.
What’s the fault indication feature?
The dual-handle RCBO design makes diagnosis simple: the black handle trips on overload/short-circuit (MCB), while the white handle trips on earth leakage (RCD).
- Model: WMIP40BSP
- Standards: BS EN 61439-3, BS EN 61009-1, BS EN 61643-11
- Modules: 5
- Rated Voltage: 230V AC
- RCBO Rating: 40A, B Curve
- Frequency: 50Hz
- Surge Protection: Type 2 SPD, visual indicator (green/red)
- Terminal Type: Cage clamp
- Max Cable Entry: 35mm²
- Cable Entry: Multiple knockouts (M20–M32)
- Mounting: 35mm DIN rail
- IP Rating: IP65 – dust and water resistant
- Operating Temperature: -25°C to +40°C
Delivered pre-assembled for straightforward installation by a qualified electrician. Suitable for outdoor mounting in domestic and commercial EV charging setups. Dual-handle RCBO provides clear fault source identification.
- Keep SPD earth lead short to maintain surge protection performance
- Fix enclosure securely using raised keyhole slots
- Use suitable IP-rated glands to preserve enclosure integrity
- Padlock lid if additional tamper resistance is required
