1200 cable tray width

A 1200 cable tray typically has a width of 1200 mm, with depth ranging from 100 mm to 300 mm depending on tray type and cable load.

Width

The "1200" designation in cable trays usually refers to the tray width, meaning the tray is 1200 mm wide. This is considered a very wide tray, suitable for industrial applications, large power cable runs, or projects requiring high cable density . Wider trays reduce cable stacking, improve heat dissipation, and allow easier installation of multiple cable layers.

Depth

The depth of a cable tray is the vertical height of the side walls and determines how many cables can be safely accommodated. For a 1200 mm wide tray, standard depths typically range from 100 mm to 300 mm, depending on the tray type and load requirements . Ladder trays often require deeper side rails for heavy cable loads, while perforated or wire mesh trays may use shallower depths if airflow and cable support are sufficient.

Tray Type Considerations

• Ladder trays: Open rungs allow maximum airflow; depth is critical for load support.
• Perforated trays: Continuous bottom support; depth ensures cable containment and uniform support.
• Wire mesh trays: Flexible for data and control cables; depth is usually moderate, as cables are lighter .

Sizing Guidelines

• Fill ratio: Maintain 40–50% fill to allow heat dissipation and future expansion .
• Material thickness: Heavier loads require thicker side rails (2.5 mm or more for industrial trays).
• Length: Standard sections are 3 meters, but longer lengths can be customized . In summary, a 1200 mm wide cable tray is a large industrial tray, and its depth should be selected between 100 mm and 300 mm based on cable volume, type, and installation requirements, while ensuring compliance with NEC or IEC standards and maintaining proper fill ratios for safety and ventilation .