125A 3 Phase Distribution Board – 4 Way
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WTPN04-125 is the most compact model in our 125A Three Phase Distribution Board range. Supplied with a 125A 4-pole main switch and integrated Type 2 Surge Protection Device (SPD), it’s designed for reliable distribution across smaller commercial, light industrial, or large domestic three-phase installs where space and circuit count...
The WTPN04-125 is the most compact model in our 125A Three Phase Distribution Board range. Supplied with a 125A 4-pole main switch and integrated Type 2 Surge Protection Device (SPD), it’s designed for reliable distribution across smaller commercial, light industrial, or large domestic three-phase installs where space and circuit count are limited.
Built in a 4-way IP40 steel enclosure, the WTPN04-125 keeps installs neat and manageable without compromising on compliance or durability. Fully compatible with our MCBs and RCBOs, it provides a futureproof base for safe and accessible circuit protection.
Installer Tip: Choose this 4-way model for sites with limited distribution needs - such as small workshops or outbuildings - where a full-size board isn’t necessary but SPD and 125A isolation are still required.
Key Features
- 125A 4-pole main switch – full isolation and circuit control
- Type 2 SPD pre-installed – safeguards against transient surges
- Compact 4-way steel enclosure – IP40 rated, 1.2mm construction
- Accepts 6kA MCBs and RCBOs without modification
- Neutral & earth terminals on both sides – fully shrouded for safety
- Removable gland plate for adaptable cable entry
- Complies with BS EN 61439-3
Compare 125A 3 Phase Distribution Board Variants
| Model | Ways | Main Device | SPD |
|---|---|---|---|
| WTPN04-125 (This Product) | 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 | 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 |
Does this 4-way board come with surge protection?
Yes – all WTPN boards, including this 4-way model, are supplied with an integrated Type 2 SPD as standard.
Is this suitable for small commercial or workshop installs?
Yes – the 4-way variant is ideal for compact three-phase setups where only a handful of outgoing circuits are required.
Can I expand this later if I need more ways?
For larger sites, consider stepping up to the 8-way or 12-way versions. We also stock extension and spreader boxes if future expansion is required.
Do you supply compatible breakers?
Yes – the board accepts our full range of MCBs and RCBOs without modification.
- Model: WTPN04-125
- Rated Current: 125A
- Ways: 4
- 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 ready for installation by a qualified electrician. Ensure SPD earthing is as short as possible to meet surge protection best practice.
- Verify available space – compact 4-way enclosure
- Follow SPD connection guidance to maintain compliance
- Use appropriate glands with the removable plate for neat entry
- Confirm final isolation and test circuits before handover
