Main Switch Consumer Unit – WME12/MS100 (12 Module, 100A)
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WME12/MS100 Main Switch Consumer Unit is a 12-module metal enclosure supplied with a 100A main switch incomer. With 10 usable ways, it’s a versatile option for standard domestic properties or small commercial installs. The robust steel case, raised DIN rail, and multiple knockouts make it a practical, regulation-compliant base...
The WME12/MS100 Main Switch Consumer Unit is a 12-module metal enclosure supplied with a 100A main switch incomer. With 10 usable ways, it’s a versatile option for standard domestic properties or small commercial installs. The robust steel case, raised DIN rail, and multiple knockouts make it a practical, regulation-compliant base ready for population with MCBs or RCBOs.
Installer Tip: The 10-way board is a popular choice for domestic installs, giving plenty of room for lighting, socket, and appliance circuits while leaving spare capacity for future additions.
Key Features
- 12-module metal enclosure – 10 usable ways
- 100A main switch – double-pole isolator included
- Compliance: BS7671:2018 (Amendment 2) & BS EN 61439
- Flexible install: knockouts on top, bottom, sides, and rear
- Installer-friendly: raised DIN rail, pre-fitted earth & neutral bars
- Durable finish: white powder-coated steel enclosure
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 (This Product) | 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 | 18 | 16 | 100A Main Switch | 376 × 240 × 112 |
| WME22/MS100 | 22 | 20 | 100A Main Switch | 400 × 240 × 112 |
Does this board include breakers?
No – it’s supplied with a 100A main switch incomer. Add MCBs or RCBOs to complete your installation.
Where would a 10-way consumer unit be used?
Typically for standard domestic installs, with capacity for lighting, socket, cooker, and appliance circuits, plus room to expand.
Is it fully compliant?
Yes – built to BS EN 61439 and fully compliant with BS7671:2018+A2:2022 (Amendment 2).
Does it come with earth and neutral bars?
Yes – each unit is supplied with neutral and earth terminal bars, plus a pin-style busbar.
- SKU: WME12/MS100
- Incomer: 100A main switch (non-RCD)
- Modules: 12
- Usable Ways: 10
- 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 bars and cables
- Compliance: BS EN 61439; BS7671:2018 (Amendment 2)
- Dimensions (WxHxD): 232 × 240 × 112 mm
The WME12/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, level surface with clearance for inspection
- Use knockouts with glands/bushes to maintain enclosure integrity
- Fit devices (MCBs/RCBOs) as required by your design
- Confirm bonding and earth continuity before energising
