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The WMCUSP440C three-phase surge protection unit combines a 4-pole Type 2 SPD and 40A C curve MCB in an IP40 metal enclosure. It brings the protective devices and housing together for installers specifying a separate indoor surge-protection assembly alongside a three-phase distribution system.
A clearly specified SPD and MCB assembly
- Fewer components to source separately: the enclosure, four-pole SPD and four-pole MCB are supplied as one unit.
- Type 2 surge protection: the SPD has a 20kA nominal and 40kA maximum discharge-current rating for protection against transient overvoltages.
- 40A C curve MCB: the supplied four-pole device provides overcurrent protection and has a 10kA breaking capacity.
- Metal IP40 enclosure: an indoor enclosure format for a suitable dry mounting location.
This is the MCB version. It does not include an RCD or RCBO, so any residual-current protection required by the installation must be provided separately. The 8-way enclosure description refers to its format; it does not mean eight spare outgoing circuits.
View the Whitecliffe three-phase SPD unit datasheet (PDF) to check the assembly and its component specifications.
Compare three-phase surge protection units
| Product | Supplied configuration | Choose when |
|---|---|---|
| WMCUSP440C — this product | Type 2 SPD + 40A C curve MCB; metal IP40 | You need the specified 40A MCB assembly in an indoor metal enclosure. |
| WMCUSP463C | Type 2 SPD + 63A C curve MCB; metal IP40 | The design calls for the 63A MCB variant. |
| WRCUSP440C | Type 2 SPD + 40A Type A RCBO; metal IP40 | The design calls for combined residual-current and overcurrent protection in the assembly. |
| WPCUSP440C | Type 2 SPD + 40A MCB; plastic IP65 | The enclosure specification calls for plastic IP65 instead of metal IP40. |
Order the correct configuration
Add WMCUSP440C to your basket for the 40A MCB metal version. If you need a different configuration, confirmation of enclosure dimensions or delivery for a scheduled installation, contact Power & Data UK with the supply details, enclosure requirement and required date. For a wider comparison, browse three-phase surge protection units.
