The cables are used in Eurobalise (ERTMS) speed control circuits. The cables are laid in trays alongside railway lines and connect an “Eurobalise” located between the rails to the Eurocoder (LEU) located in a control centre.


  • ALSTOM 5 326 203
  • SNCF CT 446

Cable Construction

Conductors Class 2 stranded tinned copper.
Insulation Solid polyethylene.
Inner sheath Low density polyethylene.
Screen Two corrugated copper braid shields.
Intermediate Sheath Low density polyethylene.
Armour Galvanized steel braid armour.
Outer Sheath Flame Retardant PVC.

Electrical Characteristics at 20℃

Nominal Conductor Diameter mm 1.04
Nominal Cross Section Area mm^2 0.85
Maximum Conductor Resistance (DC) Ω/km 22
Characteristic Impedance @100KHz-1MHz Ω 95
Maximum Attenuation
@560 kHz dB/km 7.5
@1MHz dB/km 10
Nominal Insulated Thickness mm 0.63

Mechanical and Thermal Properties

  • Minimum Bending Radius: 8×OD (static); 16×OD (dynamic)
  • Temperature Range: -30℃ to +70℃ (during operation); -20℃ to +50℃ (during installation)

Dimensions and Weight

Cable Code No. of cores& Nominal Conductor Cross Sectional Area No. & Nominal Diameter of Strands Nominal Sheath Thickness Nominal Overall Diameter Nominal Weight
Inner Inter. Outer
  No.×mm^2 No/mm mm mm mm mm kg/km
RS/SIF-2Y2YC2Y(SWB)Y-2C0.85S 2 x 0.85 7/0.386 1.0 0.5 1.6 15 301