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Product

Hook-up & equipment wiresEN 50306-2 Thin Wall300 V · 0.5–2.5 mm²EN 45545-2 HL3

EN 50306-2 Thin-Wall Single-Core Rolling Stock WireEN 50306-2 300 V ultra-thin-wall e-beam cross-linked railway hook-up wire

Ultra-thin-wall (0.25–0.30 mm wall) 300 V railway rolling-stock hook-up wire certified to EN 50306-2 and EN 45545-2 HL3 with 19- or 37-strand tinned copper conductors (0.5–2.5 mm²) and high-modulus e-beam cross-linked EI 101–105 halogen-free insulation.

Flame-retardant
Oil-resistant
Approved
Order designation
EN 50306-2 300V 1×1.0 (19×0.26)
Outer Ø min
1.7 mm
Outer Ø max
1.8 mm
Weight ≈
11 kg/km
Min. bend R
5 mm
Check against my drumAll sizes (5)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Voltage rating
300 V
300/300 V AC (max. 330 V AC / 495 V DC)
Wall thickness
0.25–0.30 mm
Ultra-thin e-beam EI 101–105 LSZH
Fire hazard
HL1 / HL2 / HL3
EN 45545-2 R15 & R16 · EN 50305
Temp. range
−40…+90/+105 °C
−40 °C (Class E) to +90 °C / +105 °C
Bending radius
3 × OD
3 × overall diameter fixed installation
Size range
0.5–2.5 mm²
19- or 37-wire concentric tinned Cu

Typical values for this cable type, based on EN 50306-2 / EN 45545-2 HL1–HL3 — confirmed in the datasheet and quotation for your order.

Application fit

Is EN 50306-2 right for your machine?

EN 50306-2 is the core building block of European railway signal and control harnesses: its 0.25–0.30 mm high-density cross-linked wall yields a 1.45 mm OD on 0.5 mm² wire, fitting high-density crimp pins in driver desks, TCMS racks and relay panels.

Fixed installation

Suitable

Driver desk wiring, TCMS electronics racks, relay panels, door control boxes and EN 50306-3/4 core element.

VFD inverter to AC motor screened feeder

Not suitable

Unscreened 300 V cabinet wire; for screened thin-wall pairs/cores, select EN 50306-3.

Use EN 50306-3

Trailing & towing

Not suitable

Protected equipment and harness wire; not for external mechanical trailing.

Use EN 50264-3-2

Energy chain / drag chain

Not suitable

For 0.6/1 kV or 1.8/3 kV auxiliary power wiring up to 240 mm², select EN 50264-3-1.

Use EN 50264-3-1
Typical machinesTrain control & management systems (TCMS)Driver cab consoles & relay cubiclesPassenger information (PIS) & CCTV racksSignalling, ATP/ERTMS & onboard electronicsHigh-density railway connector harnesses

Construction

Layer by layer

Shown: EN 50306-2 1×1.0 mm² — concentric-stranded 19- or 37-wire tinned annealed copper conductor and co-extruded 0.28 mm thin-wall electron-beam cross-linked halogen-free polymer insulation (EN 50306-1 EI 101–105).

123
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
119/37-strand tinned copper conductorConcentric-stranded tinned annealed copper (19 wires for 0.5–1.0 mm², 37 wires for 1.5–2.5 mm²) per EN 50306-2EN 50306-2
2Primary thin-wall e-beam dielectricInner high-dielectric electron-beam cross-linked halogen-free polymer layerEN 50306-1 EI 101–105
3Outer cut-resistant EI 101–105 skinCo-extruded abrasion-, oil- and solder-resistant thin-wall outer insulation skin (0.25–0.30 mm total wall)EN 50306-2 · EN 45545-2 HL3

EN 50306-2 Class P (−25 °C) & Class E (−40 °C)

300 V thin-wall single-core railway hook-up wires in 0.5, 0.75, 1.0, 1.5 and 2.5 mm²

EN 50306-2 Colour-Coded or Numbered

Supplied in white with black number printing, black with white numbers, or solid signal colours

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on EN 50306-2 / EN 45545-2 HL1–HL3. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage U0/U
300/300 V AC (max. operating 330 V AC / 495 V DC)
AC test voltage (50 Hz)
1.5 kV AC for 5 minutes (water bath)
Spark test voltage
5.0 kV AC
Max. DC conductor resistance (20 °C)
0.5 mm²: ≤ 40.1 Ω/km · 0.75 mm²: ≤ 26.7 Ω/km · 1.0 mm²: ≤ 20.0 Ω/km · 1.5 mm²: ≤ 13.7 Ω/km · 2.5 mm²: ≤ 8.21 Ω/km

Thermal

Operating temperature range
−40 °C (Class E) or −25 °C (Class P) to +90 °C (+105 °C 20,000 h thermal class)
Short-circuit temperature
+200 °C max. (5 s)

Mechanical

Min. bending radius, fixed
3 × overall diameter
Nominal insulation wall
0.25 mm (0.5 & 0.75 mm²) · 0.28 mm (1.0 & 1.5 mm²) · 0.30 mm (2.5 mm²)
Defined 19/37-wire stranding
Tight concentric 19- or 37-strand geometry guarantees precision crimp barrel fill and small OD

Resistance

Railway fire safety
EN 45545-2 Hazard Level HL1, HL2 & HL3 (Requirement Sets R15 & R16)
Dynamic cut-through & scrape
Passes EN 50305 dynamic cut-through, notch propagation and scrape abrasion tests
Smoke, toxicity & halogen-free
EN 61034-2 low smoke · EN 60754-1/2 zero halogen · EN 50305 ITC ≤ 3

Reference standards

Primary standard
EN 50306-2 (Thin wall single-core railway rolling stock cables)
General & material standard
EN 50306-1 (EI 101 to EI 105 thin-wall insulation compounds)
Fire & toxicity testing
EN 45545-2 HL1–HL3 & EN 50305
RoHS & REACH
2011/65/EU (RoHS 2) & EC 1907/2006 compliant

Identification

Insulation colour
White, Black, Red, Blue, Yellow, Green-Yellow or customer colour code
Surface marking
TEBAOFLEX EN 50306-2 300V [Size] E EN 45545-2 HL3
Customs tariff (HS)
8544.49 (insulated conductors ≤ 1000 V)

Sizes

5 standard EN 50306-2 configurations

Typical EN 50306-2 / EN 45545-2 HL1–HL3 outer diameter limits, copper content and cable weight.

Dimensions & weights
Order designationCores × mm² / AWGAWG ≈Outer Ø min
mm		Outer Ø max
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
mm		Enquiry
300 V Thin-Wall Single-Core Railway Wires (EN 50306-2, 0.5–2.5 mm²)
EN 50306-2 300V 1×0.5 (19×0.18)1×0.5201.31.4464
EN 50306-2 300V 1×0.75 (19×0.23)1×0.75181.51.6795
EN 50306-2 300V 1×1.0 (19×0.26)1×1.0181.71.89115
EN 50306-2 300V 1×1.5 (37×0.23)1×1.5162.02.214167
EN 50306-2 300V 1×2.5 (37×0.30)1×2.5142.52.824268
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Dimensions and weights are typical values per EN 50306-2 / EN 45545-2 HL1–HL3. Minimum fixed bending radius shown is 3 × 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 ≥ 10 mmBending radius OK (3 × OD 1.8 mm)
Minimum bending radius
5 mm
Min. drum core diameter
≈ 10 mm
Cable weight on drum
0.6 kg
Copper content
0.5 kg
Indicative only: based on the datasheet outer diameter and 3 × 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 dielectric voltage test1.5 kV AC (50/60 Hz)Every manufactured length
Conductor DC resistanceIEC 60228 / ASTM (tinned copper)Every manufactured length
Sample tests
Flame propagation testIEC 60332-1-2 / UL VW-1 / ISO 6722-1Per production batch
Insulation & sheath material physical propertiesEN 50306-2 / EN 45545-2 HL1–HL3Type approval

Inspection certificate

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

Product approvals

EN 50306-2 / EN 45545-2 HL1–HL3CE · RoHS 2 (2011/65/EU) · REACH

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX EN 50306-2 300V [Size] E EN 45545-2 HL3
Delivery form
Export wooden drums, reels or coils, cut-to-length on request
Packaging
Heat-treated ISPM-15 timber drums or spools with sealed ends
Conductor / colour options
Custom core counts, stripe combinations or cut harnesses on request

Technical documents

Downloads

PDFEN 50306-2 Thin-Wall Single-Core Rolling Stock Wire – technical datasheet5 sizes · construction, technical data, approvalsXLSXEN 50306-2 spec data (Excel)All 5 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.

Why does EN 50306-2 specify 19-wire and 37-wire concentric stranding instead of generic Class 5?
To achieve a 0.25–0.30 mm thin insulation wall without thin spots over irregular rope-lay bundles, EN 50306-2 mandates geometrically true concentric stranding (19 strands for 0.5, 0.75 and 1.0 mm²; 37 strands for 1.5 and 2.5 mm²). This produces a perfectly round conductor and ultra-tight outer diameter tolerance for automated stripping and crimping.
How much smaller is EN 50306-2 compared with EN 50264-3-1?
For 1×0.5 mm², EN 50306-2 (300 V) has a nominal outer diameter of ~1.45 mm and weighs ~6 kg/km, compared with ~2.1 mm and ~9 kg/km for EN 50264-3-1 (600 V) — saving more than 50 % of cross-sectional bundle area in dense TCMS cabinets.
How is EN 50306-2 used inside EN 50306-3 and EN 50306-4 cables?
EN 50306-2 thin-wall insulated wires serve as the basic core elements that are screened and sheathed to form EN 50306-3 (screened single/pair/triad/quad) and EN 50306-4 (multicore and multipair) railway cables.
What do Class P and Class E mean in EN 50306-2?
Class P designates −25 °C low-temperature rating, while Class E designates −40 °C extreme cold rating per EN 50306-1.

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EN 50306-2 Thin-Wall Single-Core Rolling Stock Wire

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- Reel type: 
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- Exposure (outdoor, water, oil, abrasion): 
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