Specifications and dimensions of trough-type energy-saving cable trays

Trough-type cable trays are rigid, ventilated or solid-bottom systems designed for efficient cable support, with standard widths from 50 mm to 600 mm, depths from 50 mm to 150 mm, and lengths typically of 2–3 meters, constructed from high-strength steel or aluminum for energy-efficient, low-deflection installations.

Design and Construction

Trough-type cable trays feature a solid or ventilated bottom with integrated side rails, providing superior cable support and protection against dust, moisture, and mechanical damage . Key design elements include:

• Solid Bottom: Maximum protection for sensitive cables.
• Ventilated Bottom: Enhances heat dissipation and reduces weight.
• Side Rails: Contain cables and provide structural strength.
• Modular Design: Allows easy customization, expansion, and integration of bends, tees, and transitions .
• Rounded Edges: Prevent cable insulation damage during installation .

Standard Dimensions

Trough-type trays are manufactured to standardized dimensions to ensure compatibility and code compliance :

• Widths: 50 mm, 100 mm, 150 mm, 200 mm, 300 mm, 400 mm, 500 mm, 600 mm
• Depths/Sidewall Heights: 50 mm, 75 mm, 100 mm, 125 mm, 150 mm
• Lengths: Typically 2 m or 3 m straight sections
• Material Thickness: Varies by duty class; steel trays are thicker for higher load capacity, aluminum is lighter for easier handling The usable cable area is slightly less than the nominal width due to sidewall height and perforation patterns, which must be considered when calculating cable fill .

Material and Load Considerations

• Materials: High-strength steel (galvanized or stainless) or aluminum, chosen based on load requirements, environmental conditions, and corrosion resistance .
• Load Capacity: Depends on material, gauge thickness, tray width, and support spacing. Steel trays generally support heavier loads than aluminum of the same dimensions .
• Support Spacing: Shorter spans allow higher load capacity; longer spans reduce deflection and maintain energy efficiency .

Energy-Saving and Installation Features

• Ventilation: Reduces cable heating and energy loss in power systems .
• Reduced Supports: Steel trays require fewer supports over long runs, lowering installation time and material usage .
• Covers: Optional solid covers provide additional protection and security, with tool-less or bolted installation options .
• Precision Fit: Modular components and standardized dimensions ensure easy assembly and minimal installation errors .

Application Notes

Trough-type trays are ideal for industrial plants, commercial buildings, and data centers, supporting both power and fiber optic cabling. They are particularly suitable where minimal cable sag, heat dissipation, and long-term reliability are critical . By selecting the correct width, depth, and material, engineers can optimize cable fill, reduce energy loss, and ensure compliance with NEC, NEMA, and IEC standards .