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The WME440SP Metal Surge Arrestor Unit provides a simple and compliant way to add surge protection to an existing installation. Housed in a compact IP40-rated metal enclosure, it is supplied with a 100A main switch and a twin-pole 40kA Type 2 Surge Protection Device (SPD).
Installed between the meter and the consumer unit, this unit ensures compliance with the 18th Edition wiring regulations (Amendment 2), which require surge protection on most new circuits. Suitable for both domestic and light commercial installs. For outdoor use, see our IP65-rated enclosures.
- 100A main switch for secure isolation
- 40kA Type 2 SPD for overvoltage and lightning surge protection
- Compact design: only 4 modules wide
- IP40 steel enclosure with earthed lid
- Meets BS7671:2018 (A2) and BS EN 61439 requirements
Often paired with metal meter isolators or PME fault detection units to build fully regulation-compliant EV and renewable setups.
