**18th Edition Compliant**

SKU: NX3-4-100SPD Categories: ,


Type 2 SPD Retrofit Kit

100A Rated enclosure
100A Main Switch
Type 2 SPD suitable for TN-S, TN-C-S or TT


100A Rated enclosure

  • 32mm and 40mm Knockouts for tails glands
  • Central din rail to maximise wiring space
  • Amendment 3 compliant

100A Main Switch

  • Simply connect supply and load tails to the main switch
  • Suitable for 63A, 80A and 100A cut out fuses
  • Single point of isolation if more than one consumer unit protected

Type 2 SPD

  • Suitable for TN-S, TN-C-S and TT earthing arrangements
  • All cable lengths comply with BS 7671 wiring regulations
  • No MCB required up to 125A main fuse.


  • Main Switch and SPD can be switched to suit chosen knockout
  • Cables can be configured for top or bottom supply
  • Full wiring instructions included


NX3 Series – BS EN