PROFIBUS cables for applications in manufacturing and process automation

Article number Article designationNumber of pairs and cable diameter per conductor in mmOuter diameter [mm]Copper index (kg/km)Weight (kg/km)
Conventional cable makeup
UNITRONIC® BUS PA (BU)1 x 2 x 1.384584
UNITRONIC® BUS PA (BK)1 x 2 x 1.384584
Fast Connect cable makeup - UL/CSA CMG certification
UNITRONIC® BUS PA FC (BU)1 x 2 x 1845.5103
UNITRONIC® BUS PA FC (BK)1 x 2 x 1845.5103


  • FC (Fast Connect) version is oil and UV-resistant

Application range

  • Process-automation application for connecting sensors and actuators - including areas with risks of explosion.
  • Fixed Installation

Product features

  • Bit rate = 31.25 kbit/s. Transmission technology RS485 also possible but bit rate is limited to 1.5 Mbit/s
  • Maximum cable length is dependent on several factors (e.g. supply voltage, current demand).
  • Technical Data: refer to the overview on "UNITRONIC® Bus Cables"
  • Flame-retardant according IEC 60332-1-2

Norm references / Approvals

  • PROFIBUS® PA is standardised in EN 50170 as PROFIBUS® DP and PROFIBUS® FMS
  • Transmission technology for PROFIBUS-PA in accordance with international standard IEC 61158-2
  • FC variant with
    UL/CSA certification (CMG / PLTC)

Product Make-up

    Stranded conductor
    Copper braiding
    Outer sheath: PVC, blue, (RAL 5015) intrinsically safe area, black (RAL 9005)
    Bare copper wire
    Fast Connect inner sheath
    Puter sheath: PVC, blue (RAL 5015), black (RAL 9005)

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

Peak operating voltage

  • (not for power applications) 250 V

Conductor resistance

  • (loop): max. 44 ohm/km

Minimum bending radius

  • Fixed installation: 10 x outer diameter

Test voltage

  • Core/core: 1500 V rms

Characteristic impedance

  • 100 ± 20 Ohm

Temperature range

  • Fixed installation: -30°C to +80°C
  • During installation: -5°C to +50°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).
  • SIMATIC® is a registered trademark of Siemens AG
  • Armoured
  • Photographs and graphics are not to scale and do not represent detailed images of the respective products.