Solarflex®-X Copper Cable 4 mm² EN50618 SOLARFLEX®-X H1Z2Z2-K Cu 4mm² for Solar PV

SOLARFLEX®-X Copper Cable 4 mm² EN50618 SOLARFLEX®-X H1Z2Z2-K Cu 4mm² for Solar PV is a 4 mm² single-core copper conductor cable manufactured to EN50618 standards for DC applications in photovoltaic systems. The cable features weather- and UV-resistant insulation formulated for outdoor exposure and elevated temperatures commonly encountered on rooftop arrays. It is intended for fixed DC wiring, string interconnections and junctions where reliable long-term performance and compliance with industry standards are required.

Advantages

The cable delivers consistent electrical conductivity and mechanical flexibility due to its fine-stranded copper core and optimized cross-sectional area. Insulation and sheath compounds meet EN50618 requirements, offering enhanced resistance to UV radiation, ozone and routine environmental stress. The product is suitable for outdoor routing on racks and within cable trays, providing stable insulation properties over extended service life and under typical solar array temperature cycles.

Suitable for (tasks / use cases)

• DC string wiring on residential and commercial rooftop PV systems
• Interconnections between modules and junction boxes
• Fixed outdoor cable runs on mounting structures and trays
• Replacement of aging or non-compliant DC conductors in PV arrays

Key specifications

• Conductor: fine-stranded copper, nominal cross-section 4 mm²
• Standard compliance: manufactured to EN50618 requirements for solar DC cables
• Insulation/sheath: UV- and weather-resistant compound suitable for outdoor exposure
• Voltage rating: suitable for low-voltage DC photovoltaic circuits (as per EN50618 application)
• Temperature range: designed for operating conditions typical of PV systems (including elevated array temperatures)
• Flexibility: fine-stranded construction for easier routing and terminations

How to use

Plan cable routing according to the PV system layout and applicable electrical standards. Use appropriate tools and cable glands for secure terminations and ensure conductor cross-section matches system current calculations. Route the cable along mounting rails or inside trays when possible, avoiding sharp edges and points of mechanical stress. When making connections, follow torque specifications of connectors and ensure insulation is intact; if the outer sheath is damaged, replace the affected section or the entire cable run. Adhere to local codes for DC isolation, labeling and protective measures against accidental contact.

Usage recommendations

For long-term reliability, install the cable with proper strain relief, secure supports at regular intervals and UV-protective routing where extended direct sunlight occurs. Verify compatibility of connectors and junctions with the 4 mm² conductor and confirm that current-carrying capacity suits the PV string design. Regular visual inspections are recommended to identify mechanical damage or abrasion and to ensure continued insulation integrity.