NC-412 is a butt joint type closure for optical fibre access networks for splicing max. 12 fibres. Typically these closures are used in the countryside for branching a small feeder cable to two or even three drop cables near single-family houses.


  • Can be installed directly to the ground, to a manhole and to the pole with a separate pole/wall bracket
  • Provides pressure-tight protection for optical fibres and splices. 
  • Suits for different type of cable constructions
  • Simple and installer-friendly construction
    • Short stripping lengths of the cables
    • No need for guiding fibres to a separate splice tray
  • Is delivered as a pre-assembled kit for 12 splices with a heat-shrinkable sleeve for 3 cables
  • Capacity for 12 fibres
  • Cable inlets:
    • One cable inlet with inner dia. 23 mm
  • Size: 250 x Ø 76 mm
  • Material: acid-proof stainless steel
  • Tightness: IP 67
  • The tightness of every closure is tested in the factory


  • 3-way heat shrink breakout boot, 1 pc
  • Fibre protection sleeve, length 45 mm, 12 pcs
  • Earthing connector for 16 mm2 earthing electrode
  • Pack of silica gel moisture absorbent
Product STK* Nestor code

Joint closure NC-412

7284497 LV1927

4-way heat shrink breakout boot

- LV2035

Pole/Wall bracket NC-412

- LV2191


*Clicking on these numbers will take you to the product page on the Finnish STK service.