The 4 mm² blue halogen-free electrical cable, available in a 20-meter reel, is the ideal solution for safe, efficient, and durable electrical installations, both in homes and professional projects. Designed to the highest quality standards, this flexible H07Z1-K cable stands out for its excellent conductivity and its ability to adapt to tight spaces, bends, and complex conduits.

One of the main features of this cable is its halogen-free nature. In the event of a fire, this type of cable does not emit toxic or corrosive gases and produces low smoke opacity, which greatly improves visibility for a possible evacuation and protects both people and sensitive electronic equipment. Therefore, its use is mandatory and highly recommended in public spaces such as offices, schools, hospitals, shopping centers, and residential buildings.

With a cross-section of 4 mm², this flexible PVC wire adequately handles the current demands of power circuits, general-purpose sockets, or the power supply to certain appliances. Its sliding outer sheath facilitates installation inside corrugated conduits, saving time and effort during electrical installation.

Main Features

• Product type: Halogen-free flexible electrical cable.


• Manufacturer reference: B25114906.


• Conductor section: 4 mm².


• Color: Blue (usually used for neutral conductor).


• Coil length: 20 meters.


• Commercial designation: H07Z1-K.


• Special high-security fire insulation.


• Excellent flexibility to facilitate passage through pipes and gutters.

Frequently Asked Questions

What is the 4 mm² blue cable used for?

The blue wire is traditionally used as the neutral conductor in single-phase electrical installations. A cross-section of 4 mm² is very common in power and low-power circuits according to current regulations.

What advantages does a halogen-free cable offer compared to a conventional one?

The main advantage is safety. Halogen-free cables do not spread fire efficiently, do not emit corrosive gases that could damage installations or equipment, and do not produce dense toxic fumes in case of fire, complying with the strictest building regulations.

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

Yes, thanks to its construction with fine copper wires and a slippery outer insulation, this flexible cable offers great handling and reduces friction, making it easy to insert into pipes and embedded or surface conduits.