(J)-Y(ST)Y...LG Fire Alarm Cable

Cable with red outer sheath for stationary use

(J)-Y(ST)Y...LG - red-sheathed PVC fire alarm cable for stationary use, with layered stranding and static foil shielding, for instance on or under plaster

Interference signals


Article number Number of pairs and conductor diameter (mm)Outer diameter [mm]Copper index (kg/km)Weight (kg/km)
(J)-Y(ST)Y...LG Fire Alarm Cable
1 x 2 x 0.861140
2 x 2 x 0.872160
4 x 2 x 0.8941100
10 x 2 x 0.813.5102220


  • The cable is marked with the phrase "Fire alarm cable” at regular intervals on the sheath. It is therefore used especially for installation in fire alarm systems.
  • Aluminium-laminated plastic foil static screen with tin-plated drain wire minimises the interference of high frequency, electromagnetic fields
  • Decoupling of circuits by means of
    twisted-pair (TP) design (crosstalk effects)

Application range

  • signal transmission
  • For fixed installation on and under plaster, in dry and damp rooms
  • For outdoor use this cable should be installed under plaster only

Product features

  • The 2-pair version (2x2x0.8) is twisted into a star quad
  • Flame-retardant according IEC 60332-1-2

Product Make-up

  • Solid bare copper conductor
  • Core insulation made of PVC
  • Cores twisted in pairs,
    pairs twisted together,
    foil wrapping over cable core,
    static screen made of aluminium-laminated plastic film with copper drain wire
  • Outer sheath made of PVC
    Outer sheath colour: flame red (RAL 3000)

Classification ETIM 5

  • ETIM 5.0 Class-ID: EC000829
  • ETIM 5.0 Class-Description: Signal-/telecommunications cable

Classification ETIM 6

  • ETIM 6.0 Class-ID: EC000829
  • ETIM 6.0 Class-Description: Signal-/telecommunications cable

Core identification code

  • according to VDE 0815,
    refer to Appendix T10


  • (800 Hz): K1: 80% ≤ 300 pF/100m

Conductor cross-section in

  • 0.8 mm: 0.50 mm²

Cable attenuation/attenuation

  • 0.8 mm: 1.1 dB/km

Minimum bending radius

  • Fixed installation:
    10 x outer diameter

Test voltage

  • Core/core: 800 V
  • Core/screen: 800 V

Loop resistance

  • max. 73.2 Ohm/km

Temperature range

  • Occasional flexing: -5°C to +50°C
  • Fixed installation: -30°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 100/100 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
  • * Trade product, no Lapp product
  • Photographs and graphics are not to scale and do not represent detailed images of the respective products.