EV Connection Unit – 100A Main Switch + Surge Protection + 20A MCB (WEVCU20BSP)
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WEVCU20BSP is a compact 5-module EV connection unit that combines surge protection, overload protection, and isolation in one enclosure. Housed in a 5-way IP40 metal consumer unit, it’s pre-wired and fitted with a 100A double-pole main switch, Type 2 SPD, and a 20A MCB for fast, compliant installation. This...
The WEVCU20BSP is a compact 5-module EV connection unit that combines surge protection, overload protection, and isolation in one enclosure. Housed in a 5-way IP40 metal consumer unit, it’s pre-wired and fitted with a 100A double-pole main switch, Type 2 SPD, and a 20A MCB for fast, compliant installation.
This unit is ideal for single-phase EV chargers that require a 20A supply and local disconnection in line with BS 7671:2018 Amendment 2. It protects the charger and cabling from both transient overvoltage and overcurrent faults, ensuring full compliance with current EV installation standards.
Installer Tip: This pre-wired board removes the need for separate isolator and SPD purchases — saving valuable time on site while guaranteeing BS 7671 compliance in one compact enclosure.
- Pre-wired 5-module metal enclosure – ready to fit
- 100A double-pole main switch for safe isolation
- Integrated Type 2 SPD for surge protection
- 20A MCB for overload and short-circuit protection
- Surface-mount design with protective front door
- IP40-rated steel body for indoor use
- Compatible with TN-S and TT earthing systems
| Part Code | Description | Included Components |
|---|---|---|
| WEVCU20BSP | EV Connection Unit – 100A Main Switch + Surge Protection + 20A MCB | Main Switch (100A DP) + Type 2 SPD + 20A MCB |
| WEVCU32BSP | EV Connection Unit – 100A Main Switch + Surge Protection + 32A MCB | Main Switch (100A DP) + Type 2 SPD + 32A MCB |
| WEVCU40BSP | EV Connection Unit – 100A Main Switch + Surge Protection + 40A MCB | Main Switch (100A DP) + Type 2 SPD + 40A MCB |
The WEVCU20BSP provides everything an EV installer needs for safe isolation and transient voltage protection in a single, compact unit. It’s the ideal choice for 20A residential EV charge points, simplifying compliance and installation under BS 7671 Amendment 2.
Does the WEVCU20BSP include surge protection?
Yes. It has a built-in Type 2 SPD to protect both the EV charger and supply cable from transient overvoltage.
Do I need to fit an external isolator?
No. The integrated 100A main switch provides full local isolation in line with EV installation regulations.
Can this be used outdoors?
No. It’s IP40-rated for indoor installations only. Use an outdoor-rated enclosure for external fitting.
Is it supplied pre-wired?
Yes. The unit is pre-wired for fast installation — simply terminate the supply and load cables.
Is it suitable for domestic EV charge points?
Yes. It’s designed specifically for single-phase domestic EV charger circuits drawing up to 20A.
- Enclosure: 5-way IP40 metal consumer unit
- Dimensions (W × H × D): 175 × 110 × 91 mm
- Main Switch: 100A double-pole isolator
- MCB: 20A, C Curve
- Surge Protection: Type 2 SPD (L–N)
- Voltage: 230V AC
- Frequency: 50Hz
- Mounting: Surface-mounted
- IP Rating: IP40 (indoor use)
- Earthing System: TN-S, TT
- Compliance: BS EN 61439-3, BS EN 61009, BS 7671 (18th Edition)
This EV connection unit should be installed by a qualified electrician. It’s designed for single-phase EV charge point supply circuits where local isolation and surge protection are required. Always verify the charger’s load demand before selecting breaker size.
- Mount near the EV charger using appropriate SWA or twin-and-earth cable
- Keep the SPD earth path short and direct to minimise impedance
- Confirm torque settings for all terminations before energising
- Use in dry, indoor environments only (IP40 rated)
- Check MCB rating and curve match the EV charger specification
