FR-N1 X1G1 Fire Resistant Cable

What is FR-N1 X1G1 Cable?

The FR-N1 X1G1 Cable is a low-voltage, halogen-free fire-resistant power and control cable engineered in accordance with French standard NF C 32-323 and European harmonized standard HD 308 S2. Rated for 0.6/1kV service, it features Class 1 solid copper (RE) or Class 2 stranded copper (RM) conductors, cross-linked polyethylene (XLPE) insulation, a halogen-free tape or polymer inner sheath, and a flame-retardant green halogen-free outer sheath complying with IEC 60332-1.

Designed for installation in high-density public venues and critical commercial facilities, this cable minimizes fire-induced hazards by substantially reducing smoke density and eliminating corrosive, toxic halogen acid gases during burning. While not intended for applications requiring continuous circuit integrity (fire survival) or direct underground/water submersion, its halogen-free construction safeguards sensitive technical equipment from acidic smoke corrosion and maintains essential visibility in evacuation corridors during structural fires.

FR-N1 X1G1 Cable Construction

• Conductor: Class 1 round solid plain copper (RE) or Class 2 round stranded plain copper (RM) per IEC 60228, offering superior electrical conductivity and thermal performance.
• Insulation: Cross-Linked Polyethylene (XLPE) delivering high dielectric strength, continuous +90°C conductor rating, and a 250°C short-circuit withstand.
• Inner Sheath / Bedding: Halogen-free tape wrapping or extruded halogen-free polymer compound providing mechanical cushioning and core roundness.
• Screen / Armour: Unarmoured and unscreened construction optimized for easy handling and routing in internal building raceways, cable trays, and ducts.
• Outer Sheath: UV-stabilized, halogen-free flame-retardant polymer compound complying with IEC 60332-1.
• Core Identification: 2 core: Brown, Blue; 3 core: Brown, Black, Grey; 4 core: Brown, Black, Grey, Blue; 5 core: Brown, Black, Grey, Blue, Black.
• Sheath Colour: Green.

Applications

FR-N1 X1G1 low-voltage copper power cables are designed for installation in indoor environments and public spaces where strict life-safety standards require zero halogen acid emissions and reduced smoke obscuration. The cable is not suitable for direct underground burial or installation in water.

• Airports & Transportation Hubs: Terminal halls, concourses, and passenger processing areas requiring halogen-free safety cabling.
• Underground Railway & Metro Stations: Sub-surface transit platforms, pedestrian tunnels, and ticketing facilities requiring low smoke generation.
• Healthcare Facilities & Hospitals: Power distribution to non-critical hospital wings, wards, and administrative blocks where acid fumes threaten patients and sensitive medical electronics.
• Hotels & Commercial Complexes: Indoor power feeds routed through dry or damp service shafts, ceiling voids, and cable trays.

Specifications & Dimensions

The FR-N1 X1G1 cable portfolio encompasses single-core configurations from 25mm² up to 300mm², two-core layouts from 4mm² to 35mm², three-core configurations (including reduced neutral variants from 50/35mm² up to 240/95mm²), four-core assemblies from 4mm² to 300mm², and five-core assemblies from 4mm² to 25mm². Operating at a rated voltage of 0.6/1kV, it supports service temperatures of -20°C to +60°C (with a maximum conductor operating temperature of +90°C and a short-circuit rating of 250°C), while maintaining a minimum laying temperature of -15°C. Minimum bending radii are established at 15 times the overall diameter for single-core cables and 12 times the overall diameter for multi-core cables. Continuous current-carrying capacities in air reach up to 563A for single-core 300mm² conductors and 538A for three-core/four-core 300mm² conductors, with maximum conductor DC resistance values ranging from 4.61 Ω/km (4mm²) down to 0.060 Ω/km (300mm²) at 20°C, all adhering strictly to NF C 32-323 manufacturing standards.

Standards

Design & Conductor Standards: NF C 32-323, IEC 60228, HD 308 S2
Flame Retardancy: IEC 60332-1 (Single cable vertical flame spread)
Halogen-Free & Low Smoke: IEC 60754-1, IEC 60754-2 (Zero Halogen Acid Gas), IEC 61034 (Low Smoke Density)
Electrical & Thermal Ratings: Voltage Rating Uo/U: 0.6/1kV; Operating Temp: -20°C to +60°C; Max Conductor Temp: +90°C; Short Circuit Temp: 250°C; Min Laying Temp: -15°C
Minimum Bending Radius: Single-core: 15 × overall diameter; Multi-core: 12 × overall diameter
Regulatory Compliance: European Regulation EN 50575 (CPR Compliant), Low Voltage Directive 2014/35/EU, CE Marked, RoHS Directive 2015/65/EU, REACH EC 1907/2006

Frequently Asked Questions

Q: What is the primary difference between FR-N1 X1G1 (copper) and FR-N1 X1G1-AR (aluminium) cables?
A: FR-N1 X1G1 features Class 1 or Class 2 copper conductors for compact dimensions and higher electrical conductivity, whereas the FR-N1 X1G1-AR variant utilizes Class 2 stranded aluminium conductors to provide a lighter weight and more economical solution for large-scale power distribution.

Q: Does the FR-N1 X1G1 cable provide circuit integrity during an active fire?
A: No, FR-N1 X1G1 is a flame-retardant, low-smoke zero-halogen cable intended to reduce toxic fumes and fire propagation; it is not rated for continuous circuit integrity (such as FE180 or E90 survival) under direct fire.

Q: Can FR-N1 X1G1 cable be installed directly underground or immersed in water?
A: No, the cable is specifically designed for indoor public and commercial installations in open air, conduits, and cable trays; it is not approved for direct burial in the ground or continuous water immersion.

Q: What payment terms does Huadong Cable accept for international industrial export orders?
A: We accept standard international commercial payment terms, including Telegraphic Transfer (T/T, with 30% advance deposit and 70% balance against shipping documents) and 100% Irrevocable Letter of Credit (L/C) at sight.

FR-N1 X1G1 Cable – Why Choose Huadong?

Huadong Cable Group manufactures FR-N1 X1G1 low-voltage fire-resistant copper cables in strict compliance with NF C 32-323 and IEC 60228 standards, verified by comprehensive laboratory testing for conductor DC resistance, XLPE insulation integrity, and IEC 60332-1 flame propagation. Utilizing high-purity oxygen-free Class 1 solid and Class 2 stranded plain copper conductors, our automated extrusion lines apply cross-linked polyethylene insulation to ensure thermal performance up to +90°C. Enclosed within an extruded halogen-free inner bedding and a distinct green flame-retardant outer sheath, our cables eliminate toxic halogen acid emissions and dense smoke, providing safety for public and industrial installations.

With more than 20 years of precision cable engineering expertise, Huadong Cable Group operates automated multi-wire stranding, high-speed extrusion, and halogen-free compounding lines certified to ISO 9001, CE, CPR (EN 50575), RoHS, and REACH protocols. By eliminating intermediary markups, we provide competitive direct factory pricing, 100% Mill Test Certificates (MTC) tested in accredited testing facilities, tailored continuous drum lengths on ISPM 15 export wooden reels, and seamless door-to-port logistics for EPC contractors and building engineers worldwide.