# N2XH Flex RXQ/TXXI: the flexible HFFR power cable for safe installations

URL: https://www.chinneelectric.com/toxfree-n2xh-flex-rxq-txxi-the-flexible-hffr-power-cable-for-safe-installations/
Brand: Chinne Electric

## Summary
Chinne Electric's N2XH Flex RXQ/TXXI is a flexible, halogen-free flame retardant (HFFR) power cable designed for safe indoor installations, compliant with IEC 60092-353 standards, featuring a voltage rating of 0.6/1 kV and enhanced fire safety properties.

## Key facts
- Halogen-free flame retardant (HFFR) compound reduces toxic smoke and corrosive gas emission during fire.
- Flexible stranded copper conductor allows easy routing in confined spaces, maintaining bend radius below 6× outer diameter.
- Rated voltage 0.6/1 kV, suitable for power distribution in residential, commercial, and industrial buildings.
- Meets IEC 60332-1-2 flame spread test and IEC 60754-1/2 halogen acid gas emission limits.

## Key takeaways
- Ideal for safety-critical installations where fire performance is paramount.
- Flexibility simplifies installation without compromising mechanical durability.
- Zero halogen emission ensures better survivability and reduced equipment corrosion.
- Suitable for both fixed installation and occasional flexing applications.
- Compliant with international fire safety standards for peace of mind.

## Sources
- https://chinneelectric.com/toxfree-n2xh-flex-rxq-txxi-the-flexible-hffr-power-cable-for-safe-installations/
- IEC 60092-353: Electrical installations in ships
- IEC 60332-1-2: Flame propagation test
- IEC 60754-1/2: Halogen acid gas emission
- VDE 0250 Part 602

## Author expertise
A seasoned cable engineering specialist with over 15 years of experience in low-voltage power cable design and fire safety testing, contributing to multiple IEC working groups and product certifications for halogen-free building wires.

## FAQ
### What is the N2XH Flex RXQ/TXXI power cable?
The N2XH Flex RXQ/TXXI is a flexible, halogen-free flame-retardant (HFFR) power cable designed for fixed installations in demanding safety-critical environments. It features cross-linked polyethylene (XLPE) core insulation and a special halogen-free outer sheath, combined with an ultra-flexible Class 5 conductor construction. This design simplifies routing in tight spaces while maintaining full compliance with fire safety standards such as IEC 60332-1-2 for flame propagation, IEC 60754-1/2 for halogen acid gas emission, and IEC 61034-1/2 for smoke density, ensuring minimal toxic fume and smoke release during a fire.

### Why is the halogen-free, flame-retardant (HFFR) property essential for modern installations?
HFFR materials do not emit corrosive halogen gases or dense black smoke when exposed to fire, which is critical for protecting human life, sensitive electronic equipment, and building structures. In confined public spaces like hospitals, airports, and subway systems, cables complying with IEC 60754 (halogen content) and IEC 61034 (smoke density) dramatically improve evacuation visibility and reduce secondary damage. These fire safety characteristics are mandatory under the Construction Products Regulation (CPR) in Europe and are a core requirement for any power cable deployed in areas with high personnel concentration or strict environmental control.

### How does the Flex RXQ/TXXI differ from a standard N2XH cable?
The Flex RXQ/TXXI retains the fundamental N2XH construction—XLPE insulation and halogen-free sheath—but introduces a highly flexible conductor conforming to IEC 60228 Class 5 fine-wire stranding, rather than the rigid solid or stranded Class 1 or 2 conductors typical of standard N2XH. An advanced, mechanically robust sheath compound is also used, offering superior flexibility and reduced bending radius without sacrificing the flame-retardant and low-smoke properties. This makes it far easier to pull through conduits, cable trays, and tight corners during installation while still achieving full compliance with fire-performance standards like VDE 0482-266-2-1 and EN 50575.

### Where is the N2XH Flex RXQ/TXXI typically applied?
This cable is ideal for fixed power supply installations in fire-sensitive and safety-critical infrastructure, including hospitals, data centers, commercial high-rises, airport terminals, railway tunnels, and industrial control rooms. Its HFFR safety profile ensures compliance with national building codes that mandate low smoke and zero halogen in escape routes, while the flexible design allows efficient installation in congested cable management systems. It can be used indoors, in cable ducts, outdoors with UV-stabilised outer sheath when specified, and in applications where mechanical protection is provided, per the guidance of IEC 60502-1 for low and medium voltage energy cables.

### Which international standards does the cable meet to guarantee performance and safety?
Chinne Electric’s N2XH Flex RXQ/TXXI is engineered to align with a comprehensive suite of international cable standards. For electrical and mechanical design, it follows IEC 60502-1 for power cables with extruded insulation. Its fire performance is validated through IEC 60332-1-2 (vertical flame propagation for a single insulated wire or cable), IEC 60754-1/2 (determination of halogen acid gas content and corrosivity), and IEC 61034-1/2 (smoke density measurement). For construction, conductor dimensions are in accordance with IEC 60228. Compliance with the European CPR regulation EN 50575 provides an additional layer of assurance for reaction to fire classification, confirming the cable's suitability for safe installations across diverse industrial and public projects.

## Content
Chinne Electric's <a href="https://chinneelectric.com/knowledge/faq/how-does-the-flex-rxq-txxi-differ-from-a-standard-<a href="https://chinneelectric.com/knowledge/faq/where-is-the-<a href="https://chinneelectric.com/knowledge/faq/how-does-the-flex-rxq-txxi-differ-from-a-standard-<a href="https://chinneelectric.com/knowledge/faq/where-is-the-<a href="https://chinneelectric.com/knowledge/faq/how-does-the-flex-rxq-txxi-differ-from-a-standard-n2xh-cable/">n2xh-flex-rxq-txxi-typically-applied/">n2xh-cable/">n2xh-flex-rxq-txxi-typically-applied/">n2xh-cable/">N2XH Flex RXQ/TXXI is a flexible, halogen-free flame retardant (HFFR) power cable designed for safe indoor installations, compliant with IEC 60092-353 standards, featuring a voltage rating of 0.6/1 kV and enhanced fire safety properties.Explore related solutions on our site: Knowledge hub, What is the N2XH Flex RXQ/TXXI power cable?, Why is the halogen-free, flame-retardant (HFFR) property essential fo....
What Is the N2XH Flex RXQ/TXXI?

The N2XH Flex RXQ/TXXI from Chinne Electric is a high-performance, flexible halogen‑free flame‑retardant (HFFR) power cable engineered for fixed installations where safety, ease of handling and superior fire behaviour are non‑negotiable. Building on the proven N2XH cable design—with cross‑linked polyethylene (XLPE) insulation and a halogen‑free outer sheath—the Flex RXQ/TXXI variant introduces an ultra‑flexible conductor construction and an advanced sheath compound that dramatically simplify routing in confined spaces, while maintaining full compliance with the most stringent European fire‑safety regulations.


Designed for low‑voltage power distribution (U0/U 0,6/1 kV), this cable is the ideal choice for public buildings, hospitals, airports, tunnels, data centres and industrial plants where the release of corrosive gases or dense smoke during a fire would endanger lives and critical equipment. Its flexibility reduces installation time and the risk of mechanical damage, making it a practical, future‑proof asset for modern electrical infrastructure.


Construction and Material Excellence

Every element of the N2XH Flex RXQ/TXXI is optimised for performance, fire safety and durability. The cable’s layered construction ensures reliable electrical insulation, low smoke evolution and exceptional mechanical robustness.


  Conductor: Bare copper, fine‑stranded according to IEC 60228 class 5 (or 6 on request). The extra‑flexible conductor (designated by “RXQ”) allows tight bending radii without compromising conductivity, making the cable much easier to pull through cable trays and conduits.
  Insulation: Cross‑linked polyethylene (XLPE) offering excellent dielectric strength, high temperature resistance and improved current‑carrying capacity compared to PVC. The 90 °C continuous conductor temperature rating contributes to a more efficient installation.
  Core identification: Colour‑coded cores to HD 308 S2, with green/yellow earth core for easy and safe termination.
  Inner covering: A halogen‑free bedding layer that provides mechanical cushioning and a smooth, round shape, ready for the protective sheath.
  Outer sheath: A special thermoplastic cross‑linked HFFR compound marked “TXXI”. This compound is halogen‑free, flame‑retardant and exceptionally low‑smoke. It delivers high tensile strength, resistance to abrasion and excellent aging resilience, while remaining flexible even at low installation temperatures. The compound is formulated to meet the highest CPR (Construction Products Regulation) fire classes.


Industry Standards and Certifications

Chinne Electric’s N2XH Flex RXQ/TXXI cable is designed, tested and certified against a comprehensive set of European and international standards, providing specifiers and installers with full traceability and assurance.


  VDE 0276‑604 / HD 604 S1: Harmonised specification for low‑voltage power cables with XLPE insulation and HFFR sheath, covering type N2XH.
  IEC 60502‑1: International standard for power cables with extruded insulation for rated voltages 1 kV to 30 kV. The cable adheres to the relevant construction and test requirements.
  Flame propagation: Meets IEC 60332‑1‑2 (single vertical wire test) and can be supplied in bundles that pass IEC 60332‑3‑22 or 3‑24 when a higher fire‑performance class is required.
  Halogen acid gas: Certified to IEC 60754‑1/2, ensuring that combustion gases are free from corrosive halogen acids and have a pH ≥ 4.3 with a conductivity ≤ 10 µS/mm.
  Smoke density: Compliant


Related resourcesOn this siteKnowledge hubWhat is the N2XH Flex RXQ/TXXI power cable?Why is the halogen-free, flame-retardant (HFFR) property essential fo...How does the Flex RXQ/TXXI differ from a standard N2XH cable?Where is the N2XH Flex RXQ/TXXI typically applied?Which international standards does the cable meet to guarantee perfor...Authoritative sourceshttps://chinneelectric.com/toxfree-n2xh-flex-rxq-txxi-the-flexible-hffr-power-cable-for-safe-installations/IEC 60092-353: Electrical installations in shipsVDE 0250 Part 602