The Courbi 320N-Φ11 is a corrugated (spiral) flexible conduit intended for the protection and routing of cables in low-mechanical-demand electrical installations. It is produced from U-PVC, is self-extinguishing, and does not propagate flame. The standard colour is white; grey, green, blue, and red are available on request.

It is suitable for surface-mounted and recessed (in-masonry) indoor installations in domestic and industrial settings. Supports should be installed every 45cm for correct positioning. It is compatible with COMBO straight connectors, junction boxes, switch boxes, and drywall fittings. Purchase price is per metre within a 50m package.

Key Features

• Corrugated (spiral) flexible form — bends around obstacles during installation
• Material: U-PVC — self-extinguishing, does not transmit flame
• Outer diameter D1: 15.8mm; inner diameter D2: 12.4mm
• Compressive strength: 320N/5cm at 22±2°C
• Impact resistance: 1kg mass from 100mm drop height at -5°C
• Compliant with EN 61386-1/2004, EN 61386-22/2004, and DIN 49018 (dimensions)

Product Benefits

• Flexible corrugated profile adapts to routing changes without special tools or bending equipment
• Self-extinguishing U-PVC reduces fire spread risk in concealed or in-wall installations
• 12.4mm inner bore accommodates standard domestic cable bundles without restriction
• Compatible with standard junction boxes, switch boxes, and drywall fittings for complete system integration
• Available on request in grey, green, blue, and red for colour-coded circuit identification

Technical Specifications

• Model: Courbi 320N-Φ11
• Type: Φ11
• Colour: White
• Material: U-PVC (self-extinguishing)
• Outer Diameter (D1): 15.8mm
• Inner Diameter (D2): 12.4mm
• Compressive Strength: 320N/5cm at 22±2°C
• Impact Resistance: m: 1kg / h: 100mm at -5°C
• Minimum Operating Temperature: -5°C
• Maximum Operating Temperature: +60°C
• Dielectric Resistance: 2kV / 15 min
• Insulation Resistance: 100MΩ
• Classification Code: 2221
• Standards: EN 61386-1/2004, EN 61386-22/2004, DIN 49018
• Package: 50m roll (price per metre)

Why You'll Love It

• Supports every 45cm give a clean, professional finish for both surface and recessed runs
• 50m roll reduces joins and wastage on larger projects
• Standard fittings compatibility (COMBO straight, junction boxes, drywall) means no special connectors needed
• Package includes 1× Courbi 320N-Φ11 corrugated conduit, 50m roll