Solar cable black 25m 4mm² IEC62930 – SOLS425 for safe PV cabling

The Solar Cable SOLS425 (25 metres, 4mm²) in black is the ideal solution for flexible and professional cabling of your photovoltaic system. With a length of 25 metres, this cable by the metre is perfectly suited for medium-sized projects, such as connecting module strings to the inverter or installing balcony power plants. The black colour serves as standard-compliant marking of the negative pole (-), making installation clear and safe.

Manufactured according to the strict international standard IEC 62930, this cable meets the highest quality standards for long-term use in modern PV systems up to 1500V DC. The high-quality XLPO double insulation and the tinned copper conductor guarantee efficient energy transmission and maximum service life, even under demanding environmental conditions.

Highlights at a glance

• Certified safety: Complies with standard IEC 62930 (H1Z2Z2-K) for permanent use in photovoltaic DC systems up to 1500V.
• Optimum project length: 25 metres in one piece allow customised cuts for individual connection paths without unnecessary interfaces.
• Clear polarity: The black outer sheath provides a clear visual marking of the negative cable and prevents mix-ups during installation.
• Weatherproof & Robust: The UV-resistant and ozone-resistant double insulation protects the cable for decades from embrittlement caused by weather influences.
• Corrosion-protected conductor: Tinned electrolytic copper ensures permanently low contact resistance and provides effective protection against oxidation.
• Wide temperature range: Safe operation even under extreme climatic conditions from -40°C to +90°C (short-term peaks up to +120°C).

Areas of application

The SOLS425 is versatile 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 stations
  • Perfect for connecting the solar modules to the micro-inverter when it is mounted in a staggered or protected position indoors.
• Motorhomes & Marine
  • Reliable cabling for self-sufficient systems requiring resistance to vibrations, moisture and UV radiation.

Installation & Safety Instructions

• Professional crimping
  • As it is cable by the metre, exclusively high-quality MC4 connectors should be used for the connection. Gas-tight crimping with a special crimping tool is essential for long-term safety.
• Parallel cable routing
  • Route the black negative cable as parallel and as close as possible to the red positive cable to minimise electromagnetic interference (induction loops).
• Mechanical protection
  • Lay the cable at sharp edges in such a way that the insulation is not damaged. Use corrugated pipes or cable ducts when passing through walls.

Features

FAQs about the solar cable black 25m 4mm²

What is the advantage of IEC 62930 certification?

Maximum longevity in PV systems. This standard ensures the cable is halogen-free, flame-retardant and specially tested for resistance to high DC voltages and intensive UV radiation. It is considerably more robust than standard conventional cables.

Can I also lay the cable indoors?

Yes. Thanks to the flame-retardant and halogen-free properties of the XLPO insulation, the SOLS425 can be laid safely in buildings to transfer energy to the inverter room.

Does the cable fit into standard MC4 plugs?