Halogen-Free Flexible CAT 7A Marine Ethernet Cable
This halogen-free CAT 7A marine Ethernet cable is developed for high-frequency shipboard data networks requiring enhanced pair-to-pair isolation and electromagnetic protection. Each twisted pair is individually foil-screened, while an additional aluminum-foil wrapping and tinned-copper braid provide comprehensive overall shielding.
The construction combines CAT 7A transmission capability with a low-smoke, halogen-free outer sheath for shipbuilding, vessel automation and demanding onboard communication systems.
Key Highlights
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Recommended for high-performance industrial Ethernet connections in ships and marine equipment.
Typical applications include:
- High-speed shipboard Ethernet networks
- Vessel automation systems
- Bridge and navigation equipment
- Engine-room monitoring
- Marine data-acquisition equipment
- Communication and alarm systems
- High-interference equipment areas
- EtherCAT networks
- EtherNet/IP systems
- M12 and RJ45 cable assemblies
The complete link—including cable length, connectors, terminations and network equipment—must be tested to confirm CAT 7A performance. Propulsion-system installations may require additional unit certification.
| Component | Construction |
| Conductor | Fine-stranded bare copper |
| Core insulation | Special high-performance polymer compound |
| Standard configurations | 4 × 2 × 26 AWG and 4 × 2 × 24 AWG |
| Pair identification | White-blue/blue, white-orange/orange, white-green/green and white-brown/brown |
| Pair formation | Insulated conductors twisted into pairs |
| Individual pair screen | Aluminum foil around each twisted pair |
| Cable assembly | Four individually screened pairs stranded together |
| Overall wrapping | Aluminum foil |
| Overall screen | Tinned-copper wire braid |
| Outer sheath | Halogen-free, low-smoke special polymer compound |
| Standard sheath color | Black |
| Optional assembly | Connectorized cable with M12 or RJ45 plugs, subject to specification review |
| Property | Reference Value |
| Transmission category | CAT 7A |
| Maximum operating voltage | 90 V |
| North American voltage reference | 300 V, only where covered by the applicable HULK recognition |
| Test voltage, core to core | 2000 V |
| Test voltage, core to screen | 2000 V |
| Minimum bending radius, fixed installation | 5 × cable diameter |
| Minimum bending radius, flexible installation | 10 × cable diameter |
| Temperature range, fixed installation | −40°C to +70°C |
| Temperature range, flexible installation | −30°C to +70°C |
| North American temperature reference | Up to +75°C, subject to certification scope |
| Characteristic impedance | 100 Ω ±10 Ω |
| Transmission reference | EN 50288-9-2 / CAT 7A |
| Halogen-free reference | IEC 60754-1 |
| Flame propagation reference | IEC 60332-3-22 Category A |
| Flame-retardant reference | IEC 60332-1-2 |
| Combustion-gas corrosiveness | Reference performance according to IEC 60754-2 |
| Smoke-density reference | IEC 61034 |
| Marine design reference | TR IEC 60092-370, subject to validation of the final HULK construction |
| Network application | Suitable for EtherCAT and EtherNet/IP when the complete link is validated |
| Environmental compliance option | RoHS-compliant and PFAS-free materials, subject to compound confirmation |
| Classification and UL options | ABS Type Approval and UL AWM Style 21080 may only be claimed for HULK constructions covered by valid documentation |
| Configuration | Approx. Outer Diameter | Copper Weight | Approx. Cable Weight |
| 4 × 2 × 26/7 AWG | 8.9 mm | 38.5 kg/km | 85 kg/km |
| 4 × 2 × 24/7 AWG | 10.5 mm | 65.0 kg/km | 116 kg/km |
Outer diameter tolerance: Approximately ±10%
Final transmission characteristics, screen coverage, conductor construction, dimensions and cable weight must be confirmed against the approved HULK production drawing.
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.
Engineering Support for Your Application
Tell Us How Your Cable Needs to Move
Send us a datasheet, drawing, existing cable model or a short description of your application. Our engineering team will help you identify a suitable cable construction.
- 01 Motion type, travel distance and minimum bend radius
- 02 Voltage, current, signal protocol and shielding needs
- 03 Operating environment, target service life and quantity