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B&Q£7.56Visit shop B&Q - SpelsbergIp55 Thermoplastic 7 Entry Junction Box Enclosure75X75X37mm
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The Spelsberg 332-907 junction box is an ideal solution for electrical installers and DIY enthusiasts who need a reliable, protected environment for cable terminations in light-industrial or residential settings. Its primary benefit is the combination of an IP55 ingress protection rating with a user-friendly snap-lid design, making it both secure against dust and moisture while remaining easy to access. A notable caveat is that while the unit is highly versatile, it is specifically rated for 2.5mm² cross-sections, so it may not be suitable for heavy-duty power distribution projects requiring larger gauge cabling.
| Model Part Number | 332-907 |
|---|---|
| Brand | Spelsberg |
IP55 means the enclosure is protected against dust ingress and is resistant to water jets projected by a nozzle from any direction.
Yes, it is suitable for protected outdoor areas, though it should not be submerged or exposed to high-pressure power washing.
It is constructed from flame-resistant thermoplastic, which helps prevent the spread of fire in the event of an electrical fault.
The rated insulation voltage for this enclosure is 400VAC.
No, this product is the enclosure and mounting hardware; internal terminal blocks should be sourced separately based on your specific circuit requirements.
Yes, they are designed to allow standard screw fixing to walls without puncturing the internal volume of the box.
Check that the internal wiring is not obstructing the rim of the box and ensure no debris is stuck in the locking mechanism.
Verify that all unused cable entries are fully closed with the included blanking plugs and ensure the cable glands (if used) are tightened correctly.
Use the provided perforation tool directly on the pre-marked points and apply steady pressure; do not use excessive force that might crack the thermoplastic.
Installation of the Spelsberg enclosure is straightforward. Use the provided perforation tool to open the desired entry points for your cables. Once the cables are routed and terminated, ensure that the snap lid is fully engaged by applying firm pressure until it clicks into place across all sides. For surface mounting, utilize the external fixing positions to prevent drilling through the base of the box, which would void the IP55 rating. To clean, use a dry or damp cloth; avoid harsh solvents that could degrade the thermoplastic casing. Regularly inspect the seal and the lid fitment if the enclosure is subjected to vibration or extreme temperature fluctuations.
