Main Switch Consumer Unit – WME18/MS100 (18 Module, 100A)
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WME18/MS100 Main Switch Consumer Unit is a 18-module metal enclosure supplied with a 100A main switch incomer. Offering 16 usable ways, it’s ideal for large domestic properties, HMOs, or small commercial sites with multiple circuits to manage. Built in durable powder-coated steel with raised DIN rails, multiple knockouts, and...
The WME18/MS100 Main Switch Consumer Unit is a 18-module metal enclosure supplied with a 100A main switch incomer. Offering 16 usable ways, it’s ideal for large domestic properties, HMOs, or small commercial sites with multiple circuits to manage. Built in durable powder-coated steel with raised DIN rails, multiple knockouts, and pre-fitted earth/neutral bars, it’s installer-friendly and fully Amendment 2 compliant.
Installer Tip: A 16-way board like this is perfect when you need capacity for multiple high-demand circuits — think EV chargers, heat pumps, cookers, showers, and solar PV, all in one installation.
Key Features
- 18-module metal enclosure – 16 usable ways
- 100A main switch – double-pole isolator included
- Compliance: BS7671:2018 (Amendment 2) & BS EN 61439
- Flexible install: knockouts on all sides and rear
- Installer-ready: raised DIN rail, pre-fitted earth & neutral bars
- Durable finish: powder-coated steel
Compare Main Switch Consumer Unit Variants
| Model | Modules | Usable Ways | Incomer | Dimensions (mm) |
|---|---|---|---|---|
| WME04/MS100 | 4 | 2 | 100A Main Switch | 160 × 240 × 112 |
| WME06/MS100 | 6 | 4 | 100A Main Switch | 160 × 240 × 112 |
| WME08/MS100 | 8 | 6 | 100A Main Switch | 200 × 240 × 112 |
| WME10/MS100 | 10 | 8 | 100A Main Switch | 216 × 240 × 112 |
| WME12/MS100 | 12 | 10 | 100A Main Switch | 232 × 240 × 112 |
| WME14/MS100 | 14 | 12 | 100A Main Switch | 304 × 240 × 112 |
| WME16/MS100 | 16 | 14 | 100A Main Switch | 340 × 240 × 112 |
| WME18/MS100 (This Product) | 18 | 16 | 100A Main Switch | 376 × 240 × 112 |
| WME22/MS100 | 22 | 20 | 100A Main Switch | 400 × 240 × 112 |
Does this board include breakers?
No – supplied with a 100A main switch incomer only. Add MCBs or RCBOs to suit your design.
Where is a 16-way board typically used?
Best suited for large homes, HMOs, or small commercial installs with high circuit demand.
Is it compliant with Amendment 2?
Yes – fully compliant with BS7671:2018+A2:2022 and manufactured to BS EN 61439 standards.
Are neutral and earth bars included?
Yes – both are pre-fitted, with all required connections supplied.
- SKU: WME18/MS100
- Incomer: 100A main switch (non-RCD)
- Modules: 18
- Usable Ways: 16
- Construction: Steel, powder-coated finish
- Mounting: Surface mount with raised DIN rail
- Cable Entry: Multiple circular knockouts (25/32mm top/bottom, 40mm sides/rear)
- Earth & Neutral: Supplied with terminal bars and cables
- Compliance: BS EN 61439; BS7671:2018 (Amendment 2)
- Dimensions (WxHxD): 376 × 240 × 112 mm
The WME18/MS100 is supplied with a pre-fitted 100A main switch but no protective devices. Final installation and circuit population must be carried out by a qualified electrician.
- Mount securely on a flat surface with clear inspection access
- Use knockouts with glands/bushes to maintain enclosure integrity
- Install MCBs or RCBOs according to your circuit design
- Confirm bonding and earth continuity before energising
