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Product

UIC 558 18-pole WTB & PA railway jumperUIC 558 (18-Pole)120 Ω WTB Train BusEN 45545-2 HL3

UIC 558 Jumper Assembly18-pole UIC 558 WTB train bus, push-pull remote control & PA inter-coach railway jumper

18-pole RIC inter-coach railway jumper built to UIC 558 (superseding 13-pole UIC 568), IEC 61375 Wire Train Bus (WTB, 120 Ω), EN 50264 and EN 45545-2 HL3 for push-pull remote control (ZMS/ZWS), PA, lighting and doors.

Low-EMC design
EMC screen
Flame-retardant
Approved
Order designation
UIC558-PP-18P-1650
Assembly length
1,650 mm
Cable OD
21.2 mm
Assembly weight
3.50 kg
Fire hazard class
HL3 (R15/R16)
All sizes (12)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Standard
UIC 558 (18P)
Supersedes 13-pole UIC 568 standard
Train bus
120 Ω WTB / TCN
Screened pairs Pins 17–18 & 14–15
Control cores
1.5 & 2.5 mm²
Lighting, door close & 110 V DC control
Contact rating
110 V / 10–16 A
Gold/silver-plated crimp contacts
Fire safety
EN 45545-2 HL3
Cross-linked LSZH EM 104 elastomer
Sealing
IP66 / IP67
IEC 61373 Cat 2 shock & vibration

Typical values for this cable type, based on UIC 558 / IEC 61375-2-3 (WTB) / EN 50264-3-2 / EN 45545-2 HL3 — confirmed in the datasheet and quotation for your order.

Application fit

Is UIC 558 Jumper Assembly right for your machine?

Provides the unified 18-wire train-wide communication and control backbone on European RIC passenger coaches and push-pull trainsets.

Switchgear & control cabinet wiring

Suitable

Individually braided 120 Ω pairs (Pins 14–15, 17–18) and overall copper screen ensure error-free 1.0 Mbps IEC 61375 WTB transmission.

Free-hanging vertical run

Suitable

Torsion-relieved core lay and flexible elastomeric bend-relief boots survive millions of inter-coach dynamic motion cycles.

TBM gantry & advancing tunnel reel

Suitable

Cross-linked LSZH elastomer (EN 50264 EM 104) meets EN 45545-2 Hazard Level HL3 (R15/R16).

Energy chain / drag chain

Not suitable

Inter-coach hanging jumper is designed for railway rolling stock headstocks, not factory drag chains.

Use M12 Industrial Ethernet
Typical machinesRIC International Passenger CoachesPush-Pull Locomotive & Driving Trailer Consists (ZWS/ZMS)IEC 61375 Wire Train Bus (WTB) RetrofitsPassenger Information (PIS) & Public Address (PA)Automated Lateral Door & Coach Lighting Control

Construction

Layer by layer

Standard UIC 558 18-core cable architecture: 2 × 2.5 mm² (common return & supply) + 8 × 1.5 mm² (lighting, door control, UIC functions) + 4 × (2 × 0.75/1.0 mm² or 1.5 mm²) individually screened twisted pairs (PA audio, intercom, 120 Ω WTB Channel A & Channel B) + overall tinned copper braid + EN 50264 EM 104 HL3 outer sheath.

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Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Fine-stranded tinned copper control & bus conductors2 × 2.5 mm² + 8 × 1.5 mm² control cores + 4 × (2 × 0.75/1.0 mm²) twisted pairs of tinned copper (EN 60228 Class 5 / Class 6)Combines 16 A control circuits with low-attenuation 120 Ω WTB serial bus pairs in a single 18-core cable
2Cross-linked EI 109 & low-loss foam-skin PEElectron-beam cross-linked polyolefin (EI 109) on control cores + low-permittivity polyolefin on 120 Ω WTB data pairsMatches 120 ± 12 Ω characteristic impedance at 1.0 MHz for IEC 61375 Wire Train Bus
3Individual pair & overall EMC copper braids≥ 85 % tinned copper braided screens on the WTB data pairs (Pins 14–15, 17–18) and PA audio pairs (Pins 1–2, 3–4), plus an ≥ 85 % overall tinned copper braidPrevents traction converter harmonics and door-solenoid spikes from corrupting WTB telegrams or PA audio
4Torsion-slip non-woven separating tapeLow-friction halogen-free fleece wrap between the overall braid and outer jacketReduces internal bending stress during tight curve articulation and S-bends
5Cross-linked LSZH elastomer (EN 50264 EM 104)Heavy-wall black electron-beam cross-linked LSZH outer jacket certified to EN 45545-2 HL3Withstands −40 °C cold impact, ballast stones, diesel oil and car-wash acids

UIC558-PP (18-Pole Plug to 18-Pole Plug Jumper)

Double-ended removable 18-pole UIC 558 male plug to 18-pole male plug jumper for standard coach headstocks

UIC558-568-ADP (18-Pole UIC 558 to 13-Pole UIC 568 Adapter)

Transition jumper with 18-pole UIC 558 plug on one end and legacy 13-pole UIC 568 plug (or coach junction box tail) on the other

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on UIC 558 / IEC 61375-2-3 (WTB) / EN 50264-3-2 / EN 45545-2 HL3. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated operating voltage
110 V DC / 250 V AC (cable 300/500 V to EN 50264)
Contact current rating
16 A (2.5 mm² pins) · 10 A (1.5 mm² & data pins)
WTB bus impedance (Pins 14–15, 17–18)
120 ± 12 Ω at 0.75–1.5 MHz (IEC 61375-2-3)
Contact plating
Hard gold over nickel (WTB data pins) & silver (control pins)
AC dielectric test
2.0 kV AC rms for 1 min

Thermal

Ambient operating range
−40 °C to +85 °C
Max. conductor temperature
+90 °C continuous

Mechanical

Total pole count
18 poles (Pins 1–13 backward compatible with UIC 568)
Cable outer diameter
20.5 mm to 22.0 mm nominal
Vibration & shock
IEC 61373 Category 2
Mating durability
≥ 1,500 coupling cycles
Min. bend radius
6 × OD dynamic inter-coach loop

Resistance

Fire & smoke safety
EN 45545-2 HL3 (R15/R16) · Zero halogen EN 60754-1/2
Ingress protection
IP66 / IP67 mated or parked in dummy socket
Chemical & oil resistance
EN 50264 mineral oil, fuel, oxalic acid & alkali wash

Reference standards

UIC interoperability
UIC Leaflet 558 (and legacy UIC 568)
Train communication bus
IEC 61375-2-3 (WTB) / DIN 43322 (ZWS/ZMS)
Railway cable standard
EN 50264-3-2 (EI 109 / EM 104)

Identification

Outer sheath colour
Black with white UIC 558 18P & EN 45545-2 HL3 legend
Insert polarization
18-pole UIC 558 keyway (accepts 13-pole UIC 568 in emergency)
Customs tariff (HS)
8544.42 / 8607.99

Sizes

12 standard UIC 558 18-pole railway remote-control & WTB jumper assemblies

Includes 18-pole plug-to-plug (PP), plug-to-junction-box (PJ), and 18-pole UIC 558 to 13-pole UIC 568 transition jumpers.

Configuration, length, WTB impedance & weight
Order designationConnector Configuration18-Core Cable ArchitectureLength
mm		Cable OD
mm		Assy Wt
kg		Fire Class
EN 45545-2		Enquiry
18-Pole UIC 558 Plug-to-Plug (PP) & Plug-to-Junction-Box (PJ) Assemblies
UIC558-PP-18P-130018P Plug ↔ 18P Plug2×2.5 + 8×1.5 + 4×(2×0.75C)C1,30021.23.15HL3 (R15/R16)
UIC558-PP-18P-150018P Plug ↔ 18P Plug2×2.5 + 8×1.5 + 4×(2×0.75C)C1,50021.23.35HL3 (R15/R16)
UIC558-PP-18P-165018P Plug ↔ 18P Plug2×2.5 + 8×1.5 + 4×(2×0.75C)C1,65021.23.50HL3 (R15/R16)
UIC558-PP-18P-180018P Plug ↔ 18P Plug2×2.5 + 8×1.5 + 4×(2×0.75C)C1,80021.23.65HL3 (R15/R16)
UIC558-PP-18P-200018P Plug ↔ 18P Plug2×2.5 + 8×1.5 + 4×(2×0.75C)C2,00021.23.85HL3 (R15/R16)
UIC558-PJ-18P-150018P Plug → M32 EMC Gland + Lugs2×2.5 + 8×1.5 + 4×(2×0.75C)C1,50021.22.75HL3 (R15/R16)
UIC558-PJ-18P-180018P Plug → M32 EMC Gland + Lugs2×2.5 + 8×1.5 + 4×(2×0.75C)C1,80021.23.05HL3 (R15/R16)
UIC558-PJ-18P-220018P Plug → M32 EMC Gland + Lugs2×2.5 + 8×1.5 + 4×(2×0.75C)C2,20021.23.45HL3 (R15/R16)
UIC 558 ↔ UIC 568 (18P/13P) Transition Jumpers & Coach Receptacle Kits
UIC558-568-PP-150018P UIC 558 ↔ 13P UIC 568 Plug13-Core Active UIC 568 Subset1,50021.23.25HL3 (R15/R16)
UIC558-568-PP-180018P UIC 558 ↔ 13P UIC 568 Plug13-Core Active UIC 568 Subset1,80021.23.55HL3 (R15/R16)
UIC558-REC-18P-150018P Coach Socket + 1.5 m Tail2×2.5 + 8×1.5 + 4×(2×0.75C)C1,50021.23.40HL3 (R15/R16)
UIC558-ETH-18P-165018P UIC 558 + Integrated Cat5e QuadUIC 558 + 100Ω ETB Ethernet Quad1,65022.03.70HL3 (R15/R16)
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • UIC 558 pin summary: Pins 1–4 = PA & Crew Intercom (screened pairs), Pins 5–12 = Lighting, Door Closing & Priority Control, Pin 13 = Common Return (2.5 mm²), Pins 14–15 = WTB Backup / ZMS Pair (120 Ω), Pin 16 = Aux Supply (2.5 mm²), Pins 17–18 = Primary WTB / ZWS Pair (120 Ω).

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
100 % 2.0 kV AC hipot, 18-pin continuity & 120 Ω WTB TDR impedance testVerify pin-to-pin wiring, shield continuity, 120 ± 12 Ω WTB pair impedance and ≥ 70 dB crosstalkEvery jumper assembly
Sample tests
Inter-coach dynamic flex & breakaway uncoupling test100,000-cycle 3-axis headstock oscillation and controlled pull-out force checkQualification lot
EN 45545-2 HL3 fire & smoke toxicity testR15/R16 hazard level verification on EM 104 cable and insert materialsType approval

Inspection certificate

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

Product approvals

UIC Leaflet 558 (18-Pole) & Legacy UIC 568 (13-Pole) CompliantIEC 61375-2-3 (120 Ω WTB) & EN 45545-2 HL3 Certified

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX UIC 558 18-POLE WTB/RIC JUMPER EN 50264 EM104 EN 45545-2 HL3
Packaging
Individually boxed with serialized 18-pin & WTB TDR test report
Receptacles
Matching 18-pole UIC 558 hinged coach sockets & parking dummy sockets
Contact plating
Hard gold-plated WTB data contacts (Pins 14–15, 17–18) as standard
Lead time
3–5 weeks ex-works

Technical documents

Downloads

PDFUIC 558 Jumper Assembly – technical datasheet12 sizes · construction, technical data, approvalsXLSXUIC 558 Jumper Assembly spec data (Excel)All 12 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.

How is the 18-pole UIC 558 connector backward-compatible with older 13-pole UIC 568 coaches?
UIC Leaflet 558 preserved the exact geometrical positions and functions of Pins 1 through 13 from the older 13-pole UIC 568 connector and placed the five additional contacts (Pins 14 to 18 for WTB / ZMS / ZWS push-pull remote control) in the outer ring. An 18-pole UIC 558 coach receptacle is keyed to accept either an 18-pole UIC 558 plug or a legacy 13-pole UIC 568 plug.
Why do Pins 14–15 and 17–18 use gold-plated contacts and 120 Ω impedance-controlled pairs?
Pins 17–18 (Main Line) and Pins 14–15 (Redundant Line / ZMS) carry the 1.0 Mbps IEC 61375 Wire Train Bus (WTB) and German ZWS/ZMS time-division multiplex push-pull locomotive control signals. Gold plating prevents low-current fretting corrosion, while 120 Ω screened pairs prevent bit errors along consists up to 22 coaches long.
Can the UIC 558 jumper also carry 100 Mbps Ethernet Train Backbone (ETB)?
Yes. Our UIC558-ETH hybrid variant replaces two spare screened pairs with a 100 Ω Cat5e star-quad (or integrates an auxiliary M12 X-coded Ethernet insert) to support IEC 61375-2-5 Ethernet Train Backbone (ETB) alongside legacy UIC functions.
Are both metal-housing and high-impact polyamide composite plug housings available?
Yes. We offer both powder-coated die-cast aluminium housings and railway-approved glass-fibre-reinforced polyamide (EN 45545-2 HL3) housings with ergonomic bow handles.

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UIC 558 Jumper Assembly

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