Continuously Flexible Halogen-Free Rail Cable 300/500 V

This continuously flexible halogen-free rail cable combines enhanced fire performance with excellent mechanical flexibility. Available in unscreened, overall-screened and paired-screened constructions, it is designed for dynamic railway equipment operating under demanding environmental conditions.

Key Highlights

Continuously flexible · Flexible Class 6 conductors · Unscreened and screened options · Twisted-pair versions available · Good EMC characteristics · Halogen-free and low smoke · Flame-retardant and self-extinguishing · EN 45545-2 railway fire performance · UN/ECE R118 flame retardancy · Oil and fuel resistant · UV, ozone and weather resistant · PFAS-free option

Application
Construction
Technical Data
Dimensions
Packaging

Recommended for continuously moving applications in railway vehicles and railway infrastructure, including door-control systems, bogies, gangways, railway construction machinery and other dynamic control equipment.

Its resistance to oil, fuel, ozone, ultraviolet radiation, weather, acids and alkaline substances makes it suitable for demanding indoor and outdoor railway environments.

Conductor: Extra-flexible bare copper strands according to IEC 60228 and VDE 0295, Class 6

Core insulation: Special halogen-free polymer compound

Core identification: Black cores with consecutive numbers according to EN 50334 and VDE 0293-334

Protective conductor: Green-yellow earth core included from three-core constructions

Paired versions: Twisted-pair constructions without a green-yellow earth conductor

Core arrangement: Cores stranded in layers or twisted in pairs

Inner wrapping: Protective foil

Optional screen: Tinned copper wire braid

Outer sheath: High-performance halogen-free polymer compound

Standard sheath color: Black, similar to RAL 9005

Nominal voltage: U₀/U 300/500 V

Testing voltage:

Core to core: 2000 V

Core to screen: 2000 V

Minimum bending radius:

Fixed installation, unscreened: 4 × cable diameter

Fixed installation, screened: 5 × cable diameter

Flexible use, unscreened: 6 × cable diameter

Flexible use, screened: 10 × cable diameter

Continuous flex, unscreened: 12 × cable diameter

Continuous flex, screened: 15 × cable diameter

Temperature range:

Fixed installation: −50°C to +90°C

Flexible use: −40°C to +90°C

Fire protection: EN 45545-2, requirement sets R15 (EL1A) and R16 (EL1B), Hazard Levels HL1–HL2

Flame propagation: IEC 60332-3-24, IEC 60332-3-25 and EN 50305 Section 9.1.2

Flame retardancy: IEC 60332-1-2 and ISO 6722 / UN/ECE R118

Halogen-free requirements: EN 50306-1 and EN 50264-1

Hydrogen chloride content: Less than 0.5% according to IEC 60754-1

Combustion gas pH value: Greater than 4.3 according to IEC 60754-2

Conductivity: Less than 10 µS/mm according to IEC 60754-2

Fluorine content: Less than 0.1% according to IEC 60684-2

Toxicity: EN 50305

Smoke density: IEC 61034

Oil and fuel resistance: EN 50264-1

Additional resistance: Good resistance to ozone, UV radiation, weather, acids and alkaline substances

Environmental compliance: RoHS compliant; PFAS-free material formulation available

Available conductor size range: 0.50–25.00 mm²

Available constructions: Unscreened multicore, screened multicore and screened twisted-pair configurations

Approximate overall diameter range: 4.6–24.1 mm

Construction	Cable Configuration	Approx. Outer Diameter	Copper Weight	Approx. Cable Weight
Unscreened	2 × 0.50 mm²	4.6 mm	9.6 kg/km	31 kg/km
Unscreened	12 × 0.50 mm²	8.4 mm	57.6 kg/km	113 kg/km
Unscreened	25 × 0.75 mm²	13.8 mm	180.0 kg/km	303 kg/km
Unscreened	73 × 1.00 mm²	23.0 mm	700.8 kg/km	989 kg/km
Unscreened	18 × 1.50 mm²	13.7 mm	259.2 kg/km	376 kg/km
Paired and screened	2 × 2 × 0.50 mm²	7.0 mm	36.9 kg/km	69 kg/km
Paired and screened	12 × 2 × 0.50 mm²	14.3 mm	177.1 kg/km	278 kg/km
Paired and screened	8 × 2 × 0.75 mm²	14.6 mm	177.6 kg/km	306 kg/km
Paired and screened	8 × 2 × 1.00 mm²	15.1 mm	220.8 kg/km	357 kg/km
Paired and screened	6 × 2 × 1.50 mm²	14.3 mm	234.7 kg/km	345 kg/km
Screened	2 × 0.50 mm²	5.3 mm	24.8 kg/km	46 kg/km
Screened	32 × 0.50 mm²	13.7 mm	214.5 kg/km	317 kg/km
Screened	25 × 0.75 mm²	14.5 mm	242.3 kg/km	351 kg/km
Screened	12 × 1.00 mm²	11.0 mm	161.6 kg/km	224 kg/km
Screened	18 × 1.50 mm²	14.4 mm	321.3 kg/km	417 kg/km
Screened	12 × 2.50 mm²	15.7 mm	356.2 kg/km	465 kg/km
Screened	4 × 4.00 mm²	11.4 mm	200.6 kg/km	260 kg/km
Screened	4 × 10.00 mm²	16.8 mm	483.2 kg/km	605 kg/km
Screened	4 × 25.00 mm²	24.1 mm	1113.6 kg/km	1293 kg/km

Additional conductor sizes, core counts, pair configurations and customized dimensions are available on request.

hulk packing

About Hulk Electric

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.

20+Years Manufacturing

30+Countries Served

10K㎡Factory Floor

35+Certifications

About Our Factory Talk to an Engineer

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.

Common Questions

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.

Get a Quotation

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.

Reply within 1 working day

Free samples for qualification

Cross-reference from any brand

Direct factory pricing — no middlemen