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Product

Control & signal cablesDIN VDE 08150.6 mm & 0.8 mm Solid CuAl/PET Static Screen (St)

J-Y(st)Y Screened Installation CableDIN VDE 0815 static-foil screened solid-pair PVC building & BMS installation cable

Standard German building installation, telecommunications, KNX/BMS and fire-alarm cable built to DIN VDE 0815 (`J-Y(St)Y...Lg`) with solid 0.6 mm or 0.8 mm bare copper conductors in layered pairs, Al/PET static foil screen (`(St)`) + drain wire and PVC sheath.

Flame-retardant
Approved
Low-EMC design
Order designation
J-Y(St)Y 2×2×0.8 Lg
Outer Ø min
5.5 mm
Outer Ø max
6.0 mm
Weight ≈
52 kg/km
Min. bend R
48 mm
Check against my drumAll sizes (15)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Peak voltage
300 V
Peak operating voltage (not for power)
Test voltage
800 V AC
50 Hz core/core & core/screen
Conductors
Ø 0.6 / 0.8 mm
Solid Cu (≈0.28/0.50 mm²) in pairs
Static screen
Al/PET (St)
Plastic-laminated Al foil + drain wire
Capacitance
≤ 100 nF/km
Max. mutual capacitance at 800 Hz
Pair range
1×2 to 40×2
Layered pairs (Lg) · Grey or Red sheath

Typical values for this cable type, based on DIN VDE 0815 (J-Y(St)Y...Lg) — confirmed in the datasheet and quotation for your order.

Application fit

Is J-Y(st)Y right for your machine?

J-Y(st)Y (`J-Y(St)Y...Lg`) is the benchmark fixed-installation telecommunications and building-automation cable across Europe for LSA/IDC punch-down blocks, fire alarm loops (`BMK`), intercoms, KNX/HVAC controllers and dry/damp indoor plaster or conduit routing.

Fixed installation

Suitable

Fixed building installation on/under plaster, in conduits, cable trays, BMS risers and fire-alarm loops.

VFD inverter to AC motor screened feeder

With conditions

Static Al/PET foil ('(St)') shields against electrostatic fields; for high-frequency industrial EMC, select braided JE-LiYCY.

Use JE-LiYCY Braided

Trailing & towing

Not suitable

Solid Class 1 copper conductors (0.6 / 0.8 mm); must never be used in flexing or trailing service.

Use LiYCY (TP)

Energy chain / drag chain

Not suitable

For public buildings requiring low-smoke zero-halogen fire performance, select J-H(st)H.

Use J-H(st)H LSZH
Typical machinesBuilding management systems (BMS) & HVACFire alarm & voice evacuation loops (Red BMK)Telecommunications, ISDN & LSA punch-down panelsAccess control, intrusion & nurse-call wiringCommercial office & residential smart-building buses

Construction

Layer by layer

Shown: J-Y(St)Y 4×2×0.8 Lg — solid 0.8 mm bare copper conductors, PVC core insulation twisted into 4 pairs and stranded in concentric layers ('Lg'), polyester tape, plastic-laminated aluminium foil static screen ('(St)') with solid tinned drain wire and pebble-grey RAL 7032 PVC outer sheath.

12345
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Solid bare copper conductorSolid circular annealed copper wire Ø 0.6 mm (≈ 0.28 mm²) or Ø 0.8 mm (≈ 0.50 mm²) for gas-tight LSA/IDC terminationDIN VDE 0815 / IEC 60228 Cl. 1
2PVC core insulation (Y)Thermoplastic PVC compound Type YI1 (DIN VDE 0207-4) twisted in pairs and laid up in layers ('Lg')DIN VDE 0815 · YI1
3Plastic wrapping foilOverlapped polyester separator tape over the layered pair assemblyDIN VDE 0815
4Static Al/PET foil screen (St)Plastic-laminated aluminium foil tape with a longitudinal solid tinned-copper drain wireDIN VDE 0815
5PVC outer sheath (Y)Flame-retardant polyvinyl chloride compound Type YM1, pebble-grey RAL 7032 (or flame-red RAL 3000 for fire alarm)DIN VDE 0207-5 YM1 · IEC 60332-1-2

J-Y(St)Y...Lg Ø 0.6 mm Grey RAL 7032

Standard telecommunications, intercom and LSA punch-down installation cable from 1×2×0.6 to 40×2×0.6

J-Y(St)Y...Lg Ø 0.8 mm Grey RAL 7032

Low-loop-resistance (≤ 73.2 Ω/km) BMS, HVAC actuator and long-run sensor cable from 1×2×0.8 to 20×2×0.8

J-Y(St)Y...Lg Ø 0.8 mm Red RAL 3000 (Brandmeldekabel)

Red outer sheath printed 'Brandmeldekabel' for fire detection and alarm loop identification

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on DIN VDE 0815 (J-Y(St)Y...Lg). Values for your order are confirmed in the datasheet and quotation.

Electrical

Peak operating voltage
300 V (not permitted for heavy current power installation)
AC test voltage (50 Hz)
800 V AC (core/core & core/screen)
Max. loop resistance (20 °C)
Ø 0.6 mm: ≤ 130 Ω/km · Ø 0.8 mm: ≤ 73.2 Ω/km
Mutual capacitance (800 Hz)
≤ 100 nF/km (up to 4 pairs may exceed by 20 %)
Capacitive coupling (k₁)
≤ 300 pF / 100 m at 800 Hz
Insulation resistance
≥ 100 MΩ·km at +20 °C

Thermal

Temperature, during installation
−5 °C to +50 °C
Temperature, fixed operation
−30 °C to +70 °C

Mechanical

Min. bending radius, fixed
7.5 × overall diameter (single bend during installation: 2.5 × OD)
Stranding method (Lg)
2 cores twisted into a pair; pairs stranded in concentric layers ('Lagenverseilung')
Conductor type
Solid annealed copper wire (Ø 0.6 mm or Ø 0.8 mm) for IDC / LSA-Plus blocks

Resistance

Flame retardance
IEC 60332-1-2 / EN 60332-1-2 self-extinguishing · CPR Eca
Installation environment
For dry and damp rooms on, in and under plaster, as well as fixed outdoor walls protected from direct sun

Reference standards

Primary standard
DIN VDE 0815 (J-Y(St)Y...Lg)
Pair colour code (Lg)
Pair 1: red/black · Pair 2: white/yellow · Pair 3: white/green · Pair 4: white/brown · Pair 5: white/blue (repeated per layer)
Halogen-free counterpart
See J-H(St)H...Bd / Lg for low-smoke zero-halogen buildings
RoHS & REACH
2011/65/EU (RoHS 2) & EC 1907/2006 compliant

Identification

Sheath colour
Pebble-grey (RAL 7032), flame-red (RAL 3000 for fire alarm), or green (RAL 6018 for EIB/KNX)
Pair identification
DIN VDE 0815 concentric layer pair colour sequence (Pair 1 red/black)
Sheath marking
TEBAOFLEX J-Y(St)Y [n×2×0.6/0.8] Lg DIN VDE 0815 CE
Customs tariff (HS)
8544.49 (insulated conductors ≤ 1000 V)

Sizes

15 standard J-Y(st)Y configurations

Typical DIN VDE 0815 (J-Y(St)Y...Lg) outer diameter limits, copper content and cable weight.

Dimensions & weights
Order designationCores × mm²AWG ≈Outer Ø min
mm		Outer Ø max
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
mm		Enquiry
n × 2 × 0.6 mm (Ø Solid Cu, Loop ≤ 130 Ω/km) DIN VDE 0815
J-Y(St)Y 1×2×0.6 Lg1×2×0.623 (0.6 mm)4.14.562636
J-Y(St)Y 2×2×0.6 Lg2×2×0.623 (0.6 mm)4.85.2123542
J-Y(St)Y 4×2×0.6 Lg4×2×0.623 (0.6 mm)6.06.5235852
J-Y(St)Y 6×2×0.6 Lg6×2×0.623 (0.6 mm)6.77.3347658
J-Y(St)Y 10×2×0.6 Lg10×2×0.623 (0.6 mm)8.18.85611470
J-Y(St)Y 20×2×0.6 Lg20×2×0.623 (0.6 mm)10.611.511220892
J-Y(St)Y 30×2×0.6 Lg30×2×0.623 (0.6 mm)12.713.8168298110
J-Y(St)Y 40×2×0.6 Lg40×2×0.623 (0.6 mm)14.415.6223388125
n × 2 × 0.8 mm (Ø Solid Cu, Loop ≤ 73.2 Ω/km) DIN VDE 0815
J-Y(St)Y 1×2×0.8 Lg1×2×0.8204.95.3113642
J-Y(St)Y 2×2×0.8 Lg2×2×0.8205.56.0215248
J-Y(St)Y 4×2×0.8 Lg4×2×0.8207.58.2419266
J-Y(St)Y 6×2×0.8 Lg6×2×0.8208.79.56112876
J-Y(St)Y 10×2×0.8 Lg10×2×0.82010.911.810119894
J-Y(St)Y 12×2×0.8 Lg12×2×0.82011.612.6121232101
J-Y(St)Y 20×2×0.8 Lg20×2×0.82014.515.8201372126
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Dimensions and weights are typical values per DIN VDE 0815 (J-Y(St)Y...Lg). Minimum fixed bending radius shown is 8 × OD.

Reel check

Will it fit your machine?

A first screen using datasheet values. Engineering confirms drum geometry, acceleration and tension with your quotation.

Check results

Drum core 300 mm ≥ 96 mmBending radius OK (8 × OD 6.0 mm)
Minimum bending radius
48 mm
Min. drum core diameter
≈ 96 mm
Cable weight on drum
2.6 kg
Copper content
1.1 kg
Indicative only: based on the datasheet outer diameter and 8 × OD bending radius. Current derating for wound layers per DIN VDE 0298-4 is assessed separately.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
AC voltage test0.8 kV AC (50 Hz)Every manufactured length
Conductor DC resistanceIEC 60228 / DIN VDE 0815 (J-Y(St)Y...Lg) (bare copper)Every manufactured length
Sample tests
Vertical flame propagationIEC 60332-1-2 / EN 60332-1-2Per production batch
Insulation & sheath material physical propertiesDIN VDE 0815 (J-Y(St)Y...Lg)Type approval

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

DIN VDE 0815 (J-Y(St)Y...Lg)CE · RoHS 2 (2011/65/EU) · REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX J-Y(St)Y [n×2×0.6/0.8] Lg DIN VDE 0815 CE
Delivery form
Export wooden drums or coils, cut-to-length on request
Packaging
Heat-treated ISPM-15 timber drums with sealed cable ends
Conductor / sheath options
Custom core counts, pair counts or sheath colours on request

Technical documents

Downloads

PDFJ-Y(st)Y Screened Installation Cable – technical datasheet15 sizes · construction, technical data, approvalsXLSXJ-Y(st)Y spec data (Excel)All 15 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

Decode the German designation J-Y(St)Y...Lg.
'J' = Installation cable ('Installationskabel'); first 'Y' = PVC core insulation; '(St)' = Static foil screen ('statischer Schirm' of plastic-laminated aluminium foil + solid tinned drain wire); second 'Y' = PVC outer sheath; 'Lg' = 'Lagenverseilung' (pairs stranded in concentric layers).
Why are J-Y(st)Y conductors specified in millimetres (0.6 mm / 0.8 mm) instead of mm²?
Under DIN VDE 0815, telecommunications and building installation cables use solid circular copper wires specified by conductor diameter: Ø 0.6 mm corresponds to ~0.28 mm² (max. loop resistance 130 Ω/km) and Ø 0.8 mm corresponds to ~0.50 mm² (max. loop resistance 73.2 Ω/km). Note that in the 2×2×0.6 / 2×2×0.8 configuration, the four cores are twisted as a star-quad (Sternvierer).
What is the colour code inside J-Y(St)Y...Lg?
Unlike DIN 47100 flexible cables, DIN VDE 0815 'Lg' uses a repeating 5-pair layer colour code: Pair 1 = red + black, Pair 2 = white + yellow, Pair 3 = white + green, Pair 4 = white + brown, and Pair 5 = white + blue.
When should I choose J-H(st)H or JE-LiYCY instead of J-Y(st)Y?
Choose J-H(st)H when building fire regulations mandate low-smoke zero-halogen (LSZH) cabling. Choose JE-LiYCY when you need flexible 7-wire stranded 0.5 mm² conductors and an overall tinned-copper wire braid screen for industrial process plants.

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J-Y(st)Y Screened Installation Cable

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