3 Phase Extension Board 14 Module
The WTPNEB14 is a 14-module 3 Phase Extension Board from the WTPN range, designed to expand existing 125A three-phase distribution systems. Built in a robust 1.2mm steel enclosure, it’s ideal for commercial, industrial, and larger domestic installations where additional ways are needed without replacing the main board. Compatible with WTPN...
The WTPNEB14 is a 14-module 3 Phase Extension Board from the WTPN range, designed to expand existing 125A three-phase distribution systems. Built in a robust 1.2mm steel enclosure, it’s ideal for commercial, industrial, and larger domestic installations where additional ways are needed without replacing the main board.
Compatible with WTPN 3 phase boards and accepting 6kA-rated devices without modification, this extension board provides a fast, cost-effective way to increase circuit capacity while maintaining full compliance with BS EN 61439-3.
- 14-module capacity – adds space for extra MCBs or RCBOs
- Compatible with 125A WTPN boards
- Heavy-duty steel enclosure – built for long service life
- Fully enclosed busbar system with shrouded terminals
- Neutral & earth terminals fitted both sides
- Removable gland plate for easy cable entry
- Keyhole mounting for quick wall installation
Can this be used on any three-phase board?
It’s designed specifically for 125A WTPN distribution boards. Check compatibility before purchase.
What’s the benefit of using an extension board?
It allows you to add extra outgoing ways without replacing the main board, saving time and cost.
Is this extension board surge protected?
No – surge protection is provided within the main board. This extension connects directly to it.
- Model: WTPNEB14
- Type: 3 Phase Extension Board
- Module Count: 14
- Rated Current: 125A (system compatible)
- Material: 1.2mm steel, IP-rated
- Device Compatibility: Accepts 6kA-rated MCBs/RCBOs without modification
- Compliance: BS EN 61439-3
Install only by a qualified electrician. The extension board is designed for use with WTPN three-phase boards and should be mounted in a dry, ventilated location.
- Ensure compatibility with existing board before ordering
- Follow wiring diagram for busbar and terminal connections
- Maintain correct cable dressing for accessibility
