The largest standard cable trays can reach widths up to 900mm (35.4 inches) with heavy-duty and large-span trays capable of supporting very high loads for industrial applications.

Standard Cable Tray Sizes

Cable trays are manufactured in a range of widths and depths to accommodate different cable volumes. Standard widths typically range from 50mm to 900mm, with depths between 50mm and 150mm. Most sections are 3 meters long, which balances transportability and installation efficiency. For safety and heat dissipation, trays are usually filled to 40% of their capacity, leaving room for future cable additions and preventing overheating .

Heavy-Duty Cable Trays

Heavy-duty cable trays are designed for high load capacities and large cable volumes. For example, SILTEC heavy-duty trays feature reinforced construction with zigzag and double wires, allowing them to handle point loads up to 200 kg at a 3-meter span. These trays are suitable for large widths and heavy-duty cables, and can be customized to specific project requirements. They are available in hot-dip galvanized or stainless steel .

Large-Span Industrial Trays

Large-span cable trays are engineered for industrial and outdoor applications, supporting heavy cables over long spans. They are made from stainless steel, FRP (fiberglass reinforced plastic), or aluminum alloy and can be finished with pre-galvanized, hot-dipped galvanized, or powder-coated surfaces for corrosion resistance. Widths for these trays typically range from 200mm to 800mm, and they can be configured in ladder, channel, or perforated styles. These trays are ideal for harsh environments, offering high load capacity, heat resistance, and long service life .

Custom Sizes

For specialized projects, cable trays can be custom-manufactured to exceed standard dimensions, accommodating unique load requirements, extreme widths, or unusual installation conditions. This flexibility ensures that even very large cable installations can be supported safely and efficiently .

Summary

• Maximum standard width: 900mm (35.4 inches)
• Heavy-duty load capacity: up to 200 kg per 3-meter span
• Large-span industrial trays: widths 200–800mm, high load, corrosion-resistant
• Materials: stainless steel, FRP, aluminum, hot-dip galvanized
• Custom options: available for larger or specialized requirements These options make it possible to select a cable tray system that meets both high-capacity and structural requirements for industrial, commercial, or outdoor installations.