Pre-wired in the UK and tested before dispatch – allow up to 3 working days for shipping.

The WMCUSP463C is a ready-to-fit 3-Phase Surge Protection Device (SPD) Unit supplied in an 8-way IP40 steel enclosure. It includes a 4-pole Type 2 SPD (20kA/40kA) paired with a 63A MCB, delivering overcurrent protection and transient surge suppression for higher load installations. Built to BS 7671:2018 Amendment 2, this board is designed for larger commercial and industrial sites, EV charging hubs, and renewable installs where demand exceeds 40A.

Why Choose the 63A MCB Variant?

This unit is designed for higher current capacity while still delivering Type 2 surge suppression. It’s the ideal choice where circuits draw beyond 40A, but upstream earth leakage protection is already handled by separate RCDs or RCBOs. This makes it:

• Load-ready — built for heavier commercial/industrial demand
• Future-proof — covers expansion in EV or renewable systems
• Compliant — tested to BS EN 61439-3 and BS 7671 Amd 2
• Installer-friendly — pre-wired, labelled, and built to order in the UK

Key Features

• 63A MCB: 10kA, C Curve overcurrent protection
• Type 2 SPD: 4-pole, rated 20kA/40kA
• 8-way IP40 Enclosure: Steel, surface mount with neutral/earth bars
• Pre-wired in the UK: Built and tested before dispatch
• Compliance: BS EN 61439-3 · IEC 61643 · BS 7671 Amd 2

Variant Comparison