NAYY-J Aluminum Underground Cable
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Aluminum Underground Cable NAYY-J
What is the NAYY-J Aluminum Underground Cable?
The NAYY-J cable, also known as NAYY-J or NAYY cable, is a high-quality aluminum underground cable specifically designed for fixed installation in the ground, in water, in concrete, as well as indoors and outdoors. It features aluminum conductors with PVC insulation and a black PVC sheath. This aluminum underground cable is an excellent, cost-effective alternative to copper cables, offering high conductivity at lower weight. It is ideal for power supply in buildings, industrial facilities, and infrastructure projects – a preferred choice for electrical service companies, construction and renovation firms, research centers, and B2B buyers in Germany, the Netherlands, Austria, Belgium, Switzerland, and France.
Advantages of the NAYY-J Cable
- Cost Efficiency: Aluminum cables are significantly more affordable than copper equivalents without compromising reliability – perfect for large-scale projects in construction and renovation.
- Lightweight: Thanks to aluminum conductors, the cable is easier to transport and install, saving time and labor costs.
- High Load Capacity: Offers strong current-carrying capacity suitable for demanding electrical installations.
- Environmental Friendliness: Aluminum is fully recyclable and meets modern sustainability standards for companies across Europe.
- Compliance with Standards: Conforms to VDE 0276-603 and HD 603, ensuring safe and durable installations.
At ekabel24.de we provide tailored solutions for business customers, including bulk purchases and fast delivery to Germany, Austria, the Netherlands, Belgium, Switzerland, and France.
Applications of the Aluminum Underground Cable NAYY-J
The NAYY-J is suitable for a wide range of professional applications:
- Power supply in residential and commercial buildings
- Installation in soil for infrastructure projects, construction sites, and renovations
- Connection of machinery and equipment in industry and research centers
- Use in damp environments such as gardens, parks, or agricultural facilities
It is a reliable, long-lasting solution especially for electrical contractors and B2B buyers across Europe.
Technical Specifications of the NAYY-J
General technical data for the NAYY-J aluminum underground cable:
- Rated Voltage: 0.6/1 kV (U₀/U)
- Test Voltage: 4 kV AC
- Temperature Range: Installation from -5 °C to +70 °C; continuous operating temperature up to +70 °C
- Conductor: Aluminum (Al), solid round (RE) or sector-shaped (SE) for larger cross-sections
- Insulation and Sheath: PVC, black, UV-resistant
- Standards: VDE 0276-603, HD 603 S1
Available Cross-Sections and Current-Carrying Capacities
Overview of common cross-sections and approximate current-carrying capacities (three-phase operation, 3 loaded conductors):
| Cross-Section | Outer Diameter (approx. mm) | Weight (approx. kg/km) | Aluminum Weight (kg/100 m) | Current-Carrying Capacity in Ground (A) | Current-Carrying Capacity in Air (A) |
|---|---|---|---|---|---|
| 5×16 RE | 22.0 | 900 | 23.20 | 102 | 79 |
| 5×25 RE | 28.0 | 1180 | 36.25 | 102 | 82 |
| 5×35 RE | 30.5 | 1380 | 50.75 | 123 | 100 |
| 4×25 RE | 26.0 | 970 | 29.00 | 102 | 82 |
| 4×35 RE | 28.0 | 1150 | 40.60 | 123 | 100 |
Note: Values are approximate according to VDE/HD standards (ground +20 °C, air +30 °C). For 5-core cables values are based on three loaded conductors. Always apply correction factors for actual installation conditions.
Why Buy NAYY-J from ekabel24.de?
As a specialized B2B supplier for cables and wires we offer:
- Free shipping within Germany for orders over 500 € and to Austria over 1,000 €
- 5% discount on orders over 5,000 €
- Fast, reliable delivery to the Netherlands, Belgium, Switzerland, and France
- Expert technical advice for electrical contractors, construction companies, renovation firms, and research institutions
All products meet strict European standards and are ideal for professional use.
Frequently Asked Questions (FAQ) – NAYY-J Aluminum Underground Cable
What does NAYY-J mean?
NAYY-J stands for: low-voltage cable (N) with aluminum conductors (A), PVC insulation (Y), PVC sheath (Y), and green-yellow protective conductor (J). It is a standard cable for direct burial and fixed installation.
Which cross-sections are available?
Common sizes include 4×25 mm², 4×35 mm², 5×16 mm², 5×25 mm², 5×35 mm² and larger (e.g. 4×50 mm²). Contact us for availability of other cross-sections.
What is the current-carrying capacity of NAYY-J 4×35?
Approximately 123 A in ground and 100 A in air (3 loaded conductors, standard conditions).
What is the current-carrying capacity of NAYY-J 5×25?
Approximately 102 A in ground and 82 A in air (3 loaded conductors, standard conditions).
What is the difference between NAYY-J and NYM-J?
NAYY-J has aluminum conductors and is designed for underground / direct burial use, while NYM-J has copper conductors and is mainly used for indoor fixed wiring. NAYY-J is lighter and more economical for long distances.
How deep should the NAYY-J cable be buried?
Typically 60–80 cm deep, depending on local regulations (e.g. VDE 0100 in Germany). Always protect the cable from mechanical damage (sand bed, warning tape, etc.).
Is the NAYY-J cable suitable for outdoor and wet environments?
Yes – it is UV-resistant, waterproof, and approved for installation in soil, water, concrete, and outdoors.
Can NAYY-J be used in France, Switzerland, Belgium, or the Netherlands?
Yes, it complies with harmonized European standards (HD 603) and is suitable for use across these countries. We ship quickly to B2B customers in these markets – contact us for customs and delivery information.