Description
25 mm² Solar DC Cable (PV Solar Cable)
The 25mm² Solar DC/PV Cable is a heavy-duty, high-capacity single-core photovoltaic cable designed for very high-current applications and longer cable runs in large-scale solar systems. It uses premium tinned copper conductors with robust double XLPO/XLPE insulation, ensuring minimal power loss, excellent conductivity, and outstanding resistance to outdoor conditions. This size is ideal for commercial, industrial, utility-scale, or high-power hybrid solar installations.
Key Features
- Dual-wall cross-linked insulation for maximum durability.
- Superior UV, ozone, water, abrasion, chemical, and weather resistance.
- Halogen-free, flame-retardant, and low-smoke emission.
- High flexibility despite the large cross-section for practical installation.
- Very high current-carrying capacity with low voltage drop.
- Long service life (25+ years) under harsh conditions.
- TUV, IEC, and other international certifications.
Typical Technical Specifications
- Cable Size: 25mm²
- Conductor: Stranded tinned copper (Class 5, highly flexible)
- Insulation & Sheath: XLPO / XLPE (cross-linked polyolefin), UV-resistant
- Rated Voltage: Up to DC 1500V / 1800V (or AC 1000V)
- Temperature Range: -40°C to +90°C (max conductor temperature up to 120°C)
- Colors: Usually red (positive) and black (negative)
- Standards: EN 50618, IEC 62930, 2 Pfg 1169, UL (where applicable)
Applications
- Main DC feeders from large solar arrays or combiner boxes to inverters
- Battery bank connections in high-capacity storage systems
- Utility-scale solar farms and commercial rooftops
- Long-distance DC transmission with minimal losses
This cable continues the pattern of the Suntree-style PV cables (6mm², 10mm², 16mm²), offering scaled-up performance for bigger systems.





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