Flexible buscable with PVC outer sheath, for use in different bussystems

Article number Article designationNumber of pairs and mm² per conductorOuter diameter [mm]Copper index (kg/km)Weight (kg/km)
for fixed installation
UNITRONIC® BUS LD1 x 2 x 0.225.71837
UNITRONIC® BUS LD2 x 2 x 0.227.12845
UNITRONIC® BUS LD3 x 2 x 0.227.23772
For fixed installation - UL/CSA CMX certification
UNITRONIC® BUS LD A1 x 2 x 0.225.71839


  • Suitable for multiple Bus systems based on RS485 / RS422

Application range

  • For fixed installation
    Maximum electromagnetic screening
  • Bus cables for bus systems such as e.g. Modbus, SUCOnet P, Modulink P, VariNet-P)
  • Dry or damp rooms

Product features

  • The stated bit rates result in the following cable lengths (maximum) of one bus segment:
  • 9.6-93.75 kbit/s = 1200m
  • 187.5 kbit/s = max. 1,000 m
  • 500 kbit/s = max. 400 m

Norm references / Approvals

    UL versions with certification:
    UL/CSA type CMX acc. to UL 444
    and CSA C22.2 no. 214-02
  • Flame retardant acc. to IEC 60332-1-2

Product Make-up

  • Stranded conductor, bare, 7-wire
  • Core insulation: PE
  • Colour code DIN 47100
  • Overall screening of braided tinned-copper strands
  • Outer sheath: PVC, violet (RAL 4001)

Classification ETIM 5

  • ETIM 5.0 Class-ID: EC000830
  • ETIM 5.0 Class-Description: Data cable

Classification ETIM 6

  • ETIM 6.0 Class-ID: EC000830
  • ETIM 6.0 Class-Description: Data cable

Mutual capacitance

  • Flexible use: 10 x outer diameter

Peak operating voltage

  • (not for power applications) 250 V

Conductor resistance

  • (loop): max. 186 ohm/km

Minimum bending radius

  • Fixed installation: 8 x outer diameter

Test voltage

  • Core/core: 1500 V rms

Characteristic impedance

  • 100 - 120 Ohm

Temperature range

  • Fixed installation: -40°C to +80°C
  • Flexing: -5°C to +70°C

  • Unless specified otherwise, the shown product values are nominal values. Detailed values (e.g. tolerances) are available upon request.
  • Copper price basis: EUR 150/100 kg. Refer to catalogue appendix T17 for the definition and calculation of copper-related surcharges.
  • Please find our standard lengths at: www.lappkabel.de/en/cable-standardlengths
  • Packaging size: coil ≤ 30 kg or ≤ 250 m, otherwise drum
  • Please specify the preferred type of packaging (e.g. 1 x 500 m drum or 5 x 100 m coils).
  • Modubus is owned by the Modbus-IDA Organisation. SUCOnet P is a registered trademark of the Moeller Group. Modulink P is a registered trademark of Weidmüller GmbH & Co. VariNet is a registered trademark of Pepperl+Fuchs GmbH.
  • Photographs and graphics are not to scale and do not represent detailed images of the respective products.