Solar cable red 25m 4mm² IEC62930 – SOLR425 for safe PV cabling

The Solar cable SOLR425 (25 metres, 4mm²) in red is the perfect choice for the flexible wiring of your photovoltaic system. With a length of 25 metres, this cable by the metre is ideal for medium-sized projects, such as connecting module strings to the inverter or installing balcony power plants with slightly longer routes. The red colour serves the standard-compliant marking of the positive terminal (+), which makes installation clear and safe.

Manufactured according to the strict standard IEC 62930, this cable meets the highest safety standards for continuous use in modern PV systems. The combination of high-quality tinned copper conductor and robust double insulation guarantees efficient energy transmission and maximum service life, even under demanding environmental conditions.

Highlights at a glance

• Certified safety: Complies with the international IEC 62930 standard for solar cables, which guarantees the highest quality and fire protection.
• Optimum length: 25 metres allow individual cuts for customised connections without unnecessary connectors.
• Clear assignment: The red outer sheath ensures clear identification of the positive conductor and prevents confusion during installation.
• Extremely resistant: The double insulation made of cross-linked special polymer is UV-resistant, ozone-resistant and resistant to weathering.
• Durable conductor: Tinned electrolytic copper offers effective protection against corrosion and ensures permanently low transition resistance.
• High temperature resistance: Safe use in a range from -40°C to +90°C, with conductor temperatures of up to +120°C permitted for short periods.

Areas of application

The SOLR425 can be used flexibly for private and commercial PV projects:

• House & roof systems
  • Ideal for string cabling and connection to the charge controller or inverter over medium distances.
• Balcony power plants
  • Perfect for connecting the solar modules to the microinverter when it is mounted indoors or in a remote location.
• Motorhomes & marine
  • Reliable wiring of solar panels on vehicle roofs or boats, where resistance to vibrations and moisture is required.

Installation & safety instructions

• Correct crimping
  • As this is a cable by the metre, only high-quality MC4 connectors should be used for the connection. Make sure to achieve a gas-tight connection with a suitable crimping tool.
• Mechanical protection
  • Lay the cable on sharp edges (e.g. on profile rails) in such a way that the insulation is not damaged. Use edge protection or corrugated tubes for this purpose.
• Observe bending radii
  • Avoid excessively tight bends in the cable so as not to jeopardise the internal structure of the fine-stranded copper conductors and the integrity of the insulation.

Features

FAQs for solar cable red 25m 4mm²

What does IEC 62930 certification mean?

Tested quality for PV systems. This standard specifies the requirements for halogen-free, low-smoke and insulated cables for photovoltaic systems. It ensures that the cable is specially designed for the high direct voltage (DC) and UV exposure in outdoor environments.

Can I also install the cable indoors?

Yes. Thanks to the flame-retardant and halogen-free properties of the insulation, the SOLR425 can be installed in buildings without concern to route the energy from the roof to the inverter in the basement or utility room.

Why should I use 4mm² instead of 6mm²?