French cable trays are available in a variety of widths, heights, materials, and finishes, designed to comply with IEC 61537 and European safety standards.

Dimensions and Configurations

French cable trays, such as those from OB Profils, are offered in widths ranging from 50 mm to 600 mm and heights from 25 mm to 100 mm to accommodate different cable volumes and installation requirements . Tray types include ventilated, solid, and wire-mesh designs, each suited for specific applications like electrical, instrumentation, or control systems . Rung spacing for ladder-type trays typically ranges from 150 mm to 230 mm to maintain cable support and proper bend radius .

Materials and Finishes

Cable trays are manufactured from a variety of materials to suit environmental conditions:

• Steel: Pre-galvanized, hot-dip galvanized, or Magnélis® for corrosion resistance .
• Aluminum: Lightweight with excellent corrosion resistance due to natural oxide layer .
• Stainless Steel: AISI 316L for high corrosion resistance, especially in chlorinated or marine environments .
• PVC and Epoxy-coated trays: For chemical resistance and UV protection .

Load and Mechanical Parameters

French cable trays are designed to meet mechanical strength requirements as per IEC 61537, ensuring they can support cable weight over specified spans without excessive deflection . Typical span testing is conducted at 1 m, 1.5 m, and 2 m, with working load and safety margins calculated according to the standard . Electrical continuity is also ensured for trays used as grounding paths, with resistance limits below 0.1 ohms across joints .

Accessories and Installation

A complete range of accessories is available, including supports, fittings, fasteners, and screws, compatible with various tray types and finishes . Installation considerations include proper ventilation, fill ratio, and compatibility with bends, risers, and other system components to prevent overheating and maintain cable integrity .

Standards and Compliance

French cable trays comply with European directives and are CE marked, demonstrating adherence to safety and performance standards . Compliance with IEC 61537 ensures trays meet international benchmarks for mechanical strength, corrosion resistance, fire performance, and electrical continuity . Manufacturers often provide test certificates to verify compliance.

Summary

French cable trays offer flexible dimensions, robust materials, and standardized compliance, making them suitable for a wide range of building and industrial applications. Selection should consider tray type, material, environmental conditions, load requirements, and accessories to ensure safe and efficient cable management .