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Microduct Assembly 7/3.5 mm with Tracer

TWD 7/3.5 mm 1-24 -way Tr, TIA598 ft

  • For direct burial
  • 1, 2, 4, 7, 12, 19 or 24 bundled ducts
  • 7/3.5 mm microducts
  • Low friction inner surface
  • Integrated tracer wire under sheath
Three different versions of indoor microduct assemblies in different colours

The thick walled microduct bundles consist of a number of microducts with an inner low friction surface that enables installation of air-blown fiber units or nano cables. The thick inner wall of the microducts allow for installation directly into the ground without the need for additional protection.

The integrated tracer wire saves time and installation cost since an additional wire for tracing is not required.

The duct assemblies are available in several configurations from 1 to 24 microducts.

7/3.5 mm microducts are optimized for installation of air-blown fibers and nano cables. The microducts have a solid low-friction innner surface for best blowing performance.

Microduct Assembly 7/3.5 mm with Tracer - Technical Details

Microducts and outer sheath: HDPE

Tracer Wire

Single ducts: 24 AWG (0.2 mm²)
Microduct assemblies: 18 AWG (0.8 mm²)
Material: Isolated, stranded copper

Technical Information

Color Code TIA598
Temperature, Operation [°C] -40 to +60
Temperature, Storage [°C] -40 to +60
Temperature, Installation [°C] -20 to +50

Abrasion: IEC 60794-1-2-E2B(1)
Kink: IEC 60794-1-2-E10, 20 x outer diameter
Impact: IEC 60794-1-2-E4
Crush: IEC 60794-1-2-E3
Tensile: IEC 60794-1-2-E
Bend: IEC 60794-1-2-E11A
Torsion: IEC 60794-1-2-E
Flexibility: IEC 60794-1-2-E8
Inner Clearance: IEC 60794-5-20, IEC 60794-5-10, Ann. D


Duct assemblies have markings showing the type and tube length. The individual microducts are identified by their colors.

12 different colors are used: according to the TIA598 standard.

For duct assemblies with >12 ducts, the first 12 colored ducts are marked with “1” and the following ducts are marked with “2”.

The assemblies are available in various sheath colors for easy identification.

Technical image # 1
TIA 598 Color Code Chart for Microduct Assemblies