125A 3 Phase Distribution Board – 12 Way
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WTPN12-125 is a 12-way 125A three-phase distribution board designed for commercial, industrial, and large domestic sites where a greater number of outgoing circuits are required. Pre-fitted with a 125A 4-pole main switch and integrated Type 2 Surge Protection Device (SPD), it offers reliable, regulation-compliant power distribution for demanding installs....
The WTPN12-125 is a 12-way 125A three-phase distribution board designed for commercial, industrial, and large domestic sites where a greater number of outgoing circuits are required. Pre-fitted with a 125A 4-pole main switch and integrated Type 2 Surge Protection Device (SPD), it offers reliable, regulation-compliant power distribution for demanding installs.
With 12 outgoing ways, this board provides ample capacity for offices, workshops, or large residential properties needing multiple protected circuits. Its robust IP40-rated steel enclosure ensures durability, while full compatibility with our MCBs and RCBOs makes configuration simple and flexible.
Installer Tip: The 12-way version is a common go-to for mid-sized commercial or industrial sites where multiple distribution circuits are needed — such as separate floors, lighting banks, or specialist machinery feeds.
Key Features
- 125A 4-pole main switch – complete isolation and control
- Type 2 SPD pre-installed – protects equipment from transient surges
- 12 outgoing ways – supports more circuits than 4, 6, or 8-way boards
- 1.2mm steel IP40-rated enclosure – durable and installer-friendly
- Shrouded neutral and earth terminals on both sides
- Accepts 6kA MCBs and RCBOs
- Removable gland plate for adaptable entry
- Complies with BS EN 61439-3
Compare 125A 3 Phase Distribution Board Variants
| Model | Ways | Main Device | SPD |
|---|---|---|---|
| WTPN04-125 | 4 | 125A 4P Main Switch | Type 2 SPD |
| WTPN06-125 | 6 | 125A 4P Main Switch | Type 2 SPD |
| WTPN08-125 | 8 | 125A 4P Main Switch | Type 2 SPD |
| WTPN12-125 (This Product) | 12 | 125A 4P Main Switch | Type 2 SPD |
| WTPN16-125 | 16 | 125A 4P Main Switch | Type 2 SPD |
| WTPN24-125 | 24 | 125A 4P Main Switch | Type 2 SPD |
Is the 12-way model suitable for larger commercial installs?
Yes – the WTPN12-125 is well-suited to offices, workshops, or industrial spaces needing multiple protected three-phase circuits.
Does it include surge protection?
Yes – like all WTPN boards, this 12-way unit comes pre-fitted with a Type 2 SPD.
What makes this different from the 8-way version?
The 12-way provides four extra outgoing circuits, giving more flexibility for complex installs where multiple loads need separation.
Can it be used in large domestic properties?
Yes – where three-phase supplies are present, this board is suitable for distributing circuits in large homes with high demand systems like EV chargers, heat pumps, and HVAC.
- Model: WTPN12-125
- Rated Current: 125A
- Ways: 12
- Incoming Device: 4-pole main switch
- Surge Protection: Type 2 SPD (integrated)
- Short Circuit Rating: 6kA
- Construction: 1.2mm steel enclosure, IP40
- Compliance: BS EN 61439-3
- Mounting: Keyhole wall mount
Supplied pre-fitted with SPD and main switch for installation by a qualified electrician. Ensure SPD earth is kept as short as possible.
- Confirm site space for the larger 12-way enclosure
- Use removable gland plate for tidy and flexible entry
- Label all outgoing circuits for easy maintenance
- Test isolation and SPD before handover
