Continuous-Flex Low-Smoke Halogen-Free CAT 7A Railway Ethernet Cable
This continuously flexible CAT 7A Industrial Ethernet cable is designed for demanding railway data networks requiring repeated bending, enhanced electromagnetic compatibility and low-smoke halogen-free materials. Its individually foil-screened pairs, overall tinned-copper braid and flexible railway-grade sheath support reliable high-frequency transmission in rail vehicles and protected outdoor installations.
Key Highlights
Continuous-flex CAT 7A construction · Individually foil-screened pairs · Overall tinned-copper braid · Enhanced EMC protection · Railway-oriented design · Low-smoke halogen-free materials · 100 Ω characteristic impedance · Oil and fuel resistance · Outdoor installation capability · −40°C to +90°C flexible range · 15 × diameter continuous-flex radius · EtherCAT and EtherNet/IP compatibility · Optional M12 or RJ45 assemblies · PFAS-free material option
Recommended for continuously moving Ethernet connections in rail vehicles and transportation systems.
Typical applications include:
- Moving railway door-control systems
- Passenger information networks
- Video surveillance systems
- Electronic ticketing equipment
- Onboard Ethernet and Gigabit Ethernet networks
- Train monitoring and diagnostic equipment
- Protected routing near bogies
- Cable installation inside protective tubes
- EtherCAT and EtherNet/IP networks
- Applications exposed to oil, fuel, weather and repeated bending
The cable is designed for continuous bending under light and medium mechanical stress. Applications involving torsional robot movement require a separately tested torsion-rated construction.
Pre-assembled versions with M12 or RJ45 connectors can be supplied on request.
Conductor: Fine-stranded bare copper
Core insulation: Special low-smoke, halogen-free flexible compound
Core identification: White-blue/blue, white-orange/orange, white-green/green and white-brown/brown
Pair formation: Individual conductors twisted into four pairs
Individual pair screening: Aluminium-laminated foil around each pair
Overall stranding: Screened pairs laid together
Overall screen: Tinned-copper wire braid
Outer sheath: Special low-smoke, halogen-free continuous-flex railway compound
Standard sheath color: Green, similar to RAL 6018
Cable shape: Round
Product category: Continuously flexible CAT 7A Industrial Ethernet cable
Peak operating voltage: Maximum 90 V
Test voltage:
- Core to core: 750 V
- Core to screen: 750 V
Characteristic impedance: 100 Ω ±10 Ω
Transmission reference: EN 50288-9-2 / CAT 7A
Minimum bending radius:
- Fixed installation: 5 × cable diameter
- General flexible movement: 12 × cable diameter
- Continuous-flex application: 15 × cable diameter
Temperature range:
- Fixed installation: −50°C to +90°C
- Flexible application: −40°C to +90°C
Reference halogen-free performance:
- EN 50306-1
- EN 50264-1
- IEC 60754-1
- IEC 60754-2
- Fluorine content reference according to IEC 60684-2
Reference fire performance:
- No flame propagation according to IEC 60332-3-24 or IEC 60332-3-25
- Flame-retardant and self-extinguishing according to IEC 60332-1-2
- Smoke-density reference according to IEC 61034
- Toxicity reference according to EN 50305
Railway fire-performance reference: R15 (EL1A) and R16 (EL1B) according to EN 45545-2 for hazard levels HL1–HL3
Vehicle flame-performance reference: ISO 6722 / UN ECE R118
Oil and fuel resistance reference: EN 50264-1
Environmental resistance: Good resistance to ozone, ultraviolet radiation, weather, acids, alkaline solutions and aggressive chemicals
Network compatibility reference: Suitable for EtherCAT and EtherNet/IP applications
Environmental compliance reference: RoHS and PFAS-free material options
| Pair Configuration | Maximum Insulated Core Ø | Approx. Outer Ø | Copper Weight | Approx. Cable Weight |
| 4 × 2 × 24 AWG | 1.71 mm | 9.7 mm | 46.6 kg/km | 109 kg/km |
| 4 × 2 × 26 AWG | 1.45 mm | 8.6 mm | 35.8 kg/km | 92 kg/km |
Final diameter tolerances must be confirmed against the approved production drawing. Other conductor sizes, sheath colors and customized cable assemblies are available on request.
THE FACTORY
BEHIND EVERY METER
Founded in 2007 in Foshan, Guangdong, Hulk Electric has grown from a regional producer into a globally recognised manufacturer of customised industrial cable solutions. Our 10,000㎡ facility runs on Toyota Production System lean principles, operated by 150+ skilled professionals producing over 300,000 metres every month.
Every cable you see on this page — including the HK-TRVV series — is engineered, extruded, tested, and shipped from that single facility. No trading company sits between you and the extrusion line.
Source Factory
Direct manufacturer — no middlemen, no markups. You deal with the engineers who run the line.
Deep Customization
Conductor, shielding, jacket compound, colour coding, certification — built to your exact spec.
7-Day Sampling
Rapid samples for new specifications. 15-day lead time on standard production orders.
Global Compliance
35+ certifications covering UL, CE, TÜV, IEC, RoHS and REACH for every major market.
BEFORE YOU ORDER
For stocked configurations listed in the ordering table, MOQ is 100 metres per specification. Custom configurations — non-standard core counts, jacket colours, or special compounds — carry a 500 metre MOQ. Samples of 5–10 metres are available free of charge for qualification testing.
Use shielded (P or PP suffix) whenever the cable runs alongside servo drives, VFDs, or inverters, or when carrying encoder, sensor, or analogue signals. Unshielded is suitable for pure power distribution and simple on/off control lines. If in doubt, our engineering team can review your cabinet layout and advise — this is included with any quotation.
Yes. Send us the existing part number or a sample and we will produce a cross-reference specification with matching electrical, mechanical, and dimensional characteristics. Most cross-references are turned around within 3 working days, with a physical sample following within 7 days.
Standard shipments include the CE Declaration of Conformity, RoHS and REACH statements, and the batch test report. UL Recognition (UL 2464 / UL 20549) is available on request for North American projects — specify this at the quotation stage as it affects the material specification.
Standard configurations ship in 15 working days from order confirmation. Custom-engineered specifications typically require 20–25 working days, depending on compound availability. Rapid sampling for new specifications is 7 days. We will confirm the exact date in writing with your order acknowledgement.
SEND US YOUR
SPECIFICATION
Tell us your core count, cross-section, and application — our engineering team will confirm the right configuration and send pricing within one working day.
Your information is used only to prepare your quotation and is never shared with third parties.
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