AS-INTERFACE cables for networking systems in the field

Communication at sensor/actuator level. Halogen free (rubber), UL-approval (PVC), oil resistant (TPE). Temperature range from -40°C bis +90°C

"LD” = Long Distance

Supplementary automation components from LappMechanical and plant engineeringGood chemical resistanceHalogen-freeTemperature-resistant


Article number Article designationOuter sheath colourApplicationNumber of cores and mm² per conductorCopper index (kg/km)Weight (kg/km)Base Unit

Price (base price)

UNITRONIC® BUS ASI (G)yellowData and power transmission2 x 1.52985
UNITRONIC® BUS ASI (G)blackTransmission of 30 V DC auxiliary power2 x 1.52985
UNITRONIC® BUS ASI LD (G)yellowData and power transmission2 x 2.54885
UNITRONIC® BUS ASI LD (G)blackTransmission of 30 V DC auxiliary power2 x 2.54885
UNITRONIC® BUS ASI (TPE)yellowData and power transmission2 x 1.52964
UNITRONIC® BUS ASI (TPE)blackTransmission of 30 V DC auxiliary power2 x 1.52964
UNITRONIC® BUS ASI (TPE)redTransmission of 230 V AC auxiliary power2 x 1.52964
UNITRONIC® BUS ASI (PVC) AyellowData and power transmission2 x 1.52970
UNITRONIC® BUS ASI (PVC) AblackTransmission of 30 V DC auxiliary power2 x 1.52970
UNITRONIC® BUS ASI (PVC) AredTransmission of 230 V AC auxiliary power2 x 1.52970
Available from stock
In stock in Germany
Not available


  • The new BUS ASI LD 2 x 2.5 (Long Distance) allows even modules located further away to be connected.
    AS-I power supplies can be reduced. The BUS ASI LD is downwards-compatible with version 1.5.
  • The rubber versions are halogen-free

Application range

  • Communication at sensor/actuator level
  • Sensor-/actuator wiring
  • For fixed installation as well as occasional flexing at free, non-continuously recurring movement without tensile load
  • The TPE version has an oil-resistant outer sheath. It is suitable for wet areas, in particular in conjunction with water-soluble cooling lubricants.

Product features

  • Data and power are transmitted via an unscreened, geometrically coded two-core flat cable (protection against polarity reversal).
  • The conductor is contacted by "piercing technology" within the ASI modules.
  • The sensors are connected to the ASI modules (coupling modules) using round cables (connection cables).

Norm references / Approvals

  • ASI is standardised Europe-wide in EN 50295 and internationally in IEC 62026-2.
  • PVC A version with UL/CSA (CMX) certification
  • UL/CSA version: CMG c(UL)us or (UL)CL2 or AWM 300V FT4 certified

Product Make-up

  • Conductor: fine-wire tinned-copper strands
  • Core insulation: blue and brown
  • Outer sheath:
    rubber (G), halogenfree
    thermoplastic elastomers (TPE)
  • Outer sheath: yellow (RAL 1023), black (RAL 9005), red (RAL 3000)

Classification ETIM 5

Classification ETIM 6

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

Peak operating voltage

  • Yellow: 300 V (not for power applications)
    Black: 300 V (not for power applications)
    Red: 300 V

Conductor resistance

  • 1.5 mm²: max. 13.7 Ohm/km
  • 2.5 mm²: max. 8.21 Ohm/km

Minimum bending radius

  • Fixed installation: 12 mm
  • Flexible use 24 mm

Test voltage

  • Core/core: 2000 V

Temperature range

  • Dependent on outer sheath material:
    PVC: -30°C to +90°C
    Other materials: -40°C to +85°C
  • During installation:
    PVC -20 °C to +90 °C
    Other materials:
    -30 °C to +85 °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
  • Lapp Kabel is a member of the AS-International Association
  • Photographs and graphics are not to scale and do not represent detailed images of the respective products.
  • Prices are net prices without VAT and surcharges. Sale to business customers only.