Multicore NYM 300/500V 3x4mm2 Rigid House Wire H05VV-U as per VDE for Apartment building

Contractors upgrading from 2.5mm² to 4mm² for bigger apartment distribution circuits don't want a flexible cord. This 3×4mm² uses Class 1 solid copper per IEC 60228, PVC sheath, and matches the cable lists used by Spanish promotores and Portuguese empreiteiros on residential fit-outs.

What Makes 4mm² Different:

Compared to the 2.5mm² version, the 4mm² cross-section increases current carrying capacity by approximately 25%, making it suitable for larger apartment distribution circuits, small commercial panel feeds, and air conditioning power lines. The Class 1 solid copper construction ensures stable conductivity without strand oxidation issues.

Technical Specifications:

· Conductor: Class 1 solid copper, 3×4.0mm² (1×2.2mm per core) (class 2 stranded copper are upon request)

· Insulation: PVC, 0.8mm thickness

· Outer sheath: Grey PVC, 1.2mm thickness

· Overall diameter: 10.5–12.0mm

· Weight: 195–210 kg/km

·  Bending radius: outer diameter ＜25mm, 4×OD; outer diameter ≥25mm, 6×OD; 

· DC resistance @20°C: ≤4.61 Ω/km per core

· Current capacity: 21A (in conduit)

· Voltage rating: 300/500V

· Standards: IEC 60227-4, DIN VDE 0250-204

Installation Advantages:

The rigid solid conductor maintains its shape during pulling through conduit, reducing snag risk. Different packing length are available to match project packaging needs.

Where It's Used:

Larger residential distribution circuits, commercial office fit-outs, retail space wiring, and light industrial control power. Commonly specified for 3-phase small motor feeds and distribution board sub-circuits.