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The WMKB240CSP is a compact 4 way metal enclosure pre-fitted with a 40A C Curve MCB and Type 2 Surge Protection Device (SPD). It’s designed for EV charger supplies, heat pump circuits, and renewable installs where higher inrush currents are expected. Built in a robust steel housing, it delivers overload protection and surge defence in a single unit.
With a 40A rating and C curve tripping characteristic, this model is suited to light commercial EV bays, multi-charger installs, and inverter-driven systems such as PV arrays and heat pumps. The factory-fitted Type 2 SPD ensures compliance with 18th Edition Amendment 2 surge protection requirements.
Installer Tip: Choose the C Curve variant when installing equipment with high start-up currents (e.g. EV chargers, motors, or inverter-driven heat pumps). It reduces the risk of nuisance tripping compared with B Curve breakers.
Key Features
- 40A C Curve MCB – suited for higher inrush loads
- Factory-fitted Type 2 SPD – transient overvoltage protection
- 4 way steel enclosure – compact and durable
- Supplied fully built – ready to install on site
- Complies with BS EN 61439-3
Compare 4 Way MCB + SPD Enclosure Variants
| Model | Rating | Curve | Protection |
|---|---|---|---|
| WMKB240BSP | 40A | B | MCB + SPD |
| WMKB240CSP (This Product) | 40A | C | MCB + SPD |
