Aluminum-Magnesium Alloy Cable Tray Specifications

Aluminum-Magnesium cable trays are lightweight, corrosion-resistant systems designed for high-capacity cable management, available in ladder, ventilated, and wire basket configurations with UL, NEMA, and CSA certifications.

Material and Construction

Aluminum-Magnesium cable trays are made from aluminum alloys with magnesium, providing high strength-to-weight ratio, corrosion resistance, and ease of installation compared to steel trays . They are suitable for indoor and outdoor applications, including industrial, commercial, and marine environments. Edges and welds are typically rounded and smooth to prevent cable damage .

Common Models and Configurations

1. Ladder Type
   • Two longitudinal side rails with transverse rungs welded to the rails.
   • Available in heavy-duty (Series 2–5) and light-duty (NEMA 12A/12B) options .
   • Supports high cable loads and allows air circulation for heat dissipation.
2. Ventilated or Perforated Tray
   • Bottom with openings for airflow, supporting up to 75% of the plan area for cable support .
   • Maximum rung spacing typically 102 mm (4 in.) to ensure cable stability.
3. Wire Basket Type
   • Flexible, lightweight, and ideal for complex routing.
   • Quick connection systems for easy assembly and modifications .
4. Extra-Large or High-Capacity Trays
   • Designed for large cable runs, ultralight weight, and high loading capacity.
   • Components include straight sections, fittings, and horizontal reducers .

Dimensions and Load Ratings

• Side rail height: 4 in. to 8 in.
• Loading height: 3 in. to 7 in.
• Safety factor: 1.5, with additional 200 lb concentrated load capacity on any portion of the tray .
• Rungs: Extra-wide aluminum, some reversed for top or bottom mounting of cable ties .

Installation Features

• Snap-in splice plates for quick assembly .
• Lightweight design reduces labor and installation time compared to steel trays .
• Compatible with top or bottom cable tie mounting.
• Full range of fittings and reducers available for custom layouts .

Compliance and Certification

• UL listed, CSA certified, and NEMA compliant .
• Suitable for use as equipment grounding conductors in accordance with NFPA 70.
• CE marking and third-party audits ensure compliance with international standards .

Selection Considerations

• Choose material based on environmental exposure (corrosive, indoor, outdoor).
• Select tray type according to cable load, airflow requirements, and installation complexity.
• Verify dimensions, load class, and safety factors to match project specifications . Aluminum-Magnesium cable trays provide a durable, lightweight, and versatile solution for modern electrical installations, supporting a wide range of cable types and configurations while ensuring compliance with safety and performance standards.