The 2.5 mm² halogen-free electrical cable in blue, 25 meters long (reference B25114904), is the ideal solution to guarantee maximum safety and efficiency in your electrical installations, both domestic and professional. Designed in accordance with current regulations for flexible wires type H07Z1-K, this cable stands out for its excellent fire resistance, making it an essential component in new construction projects, renovations, and electrical panels where the protection of people and property is a top priority.

Made with high-quality materials, this single-core conductor offers great flexibility, greatly facilitating its routing through conduit and recessed wiring mechanisms. Its 2.5 square millimeter cross-section is the most common standard size used in homes for supplying general-purpose power outlets, ensuring optimal and loss-free energy transmission. Furthermore, as it is a halogen-free (LSZH) cable, in the event of a fire it does not emit toxic gases or dense corrosive smoke, minimizing damage to electronic equipment and facilitating evacuation in crowded areas.

Technical characteristics of the H07Z1-K 2.5 mm² Blue cable

• Cable type: Halogen-free flexible wire H07Z1-K.


• Conductor section: 2.5 mm².


• Color: Blue (usually identified as neutral conductor).


• Coil length: 25 meters.


• Product reference: B25114904.


• Insulation: High-security, halogen-free thermoplastic compound.


• Nominal voltage: 450/750V.


• Flexibility: Class 5, ideal for forcing tight bends in installation pipes.


• Non-flame propagating: Complies with European fire safety regulations.

Frequently Asked Questions about Halogen-Free Cable

What is the main use of the 2.5 mm² blue cable?

In residential and commercial electrical installations, the blue wire is conventionally designated as the neutral conductor. The 2.5 mm² cross-section is approved and specifically recommended for general-purpose socket and outlet circuits.

What is the main advantage of a halogen-free cable compared to traditional PVC?

The key advantage lies in fire safety. Halogen-free cables do not emit corrosive gases or opaque smoke when they come into contact with fire, protecting people's health and preventing corrosion of nearby metals and electronic equipment.

Is it easy to pass through the inside of corrugated pipes?

Yes, thanks to its flexible class 5 wire design and sliding outer cover, this cable is easily inserted into pipes and conduits, reducing the effort and time required to carry out the wiring of the installation.

Does this roll of cable have certifications for professional use?

The product strictly complies with the quality and safety standards required in the construction and electrical sector, being suitable for both authorized professionals and private projects that require compliance with the Low Voltage Electrotechnical Regulation.