Fireproof Metal Cable Trays for Low-Voltage Cables

Fireproof metal cable trays provide safe, durable pathways for low-voltage cables while ensuring compliance with fire safety standards.

Overview

Fireproof metal cable trays are designed to support and protect low-voltage cables in environments where fire resistance is critical, such as industrial plants, data centers, railways, oil and gas facilities, and commercial buildings. These trays are typically made from galvanized steel, stainless steel, or fire-resistant coated metals, which provide both mechanical strength and fire protection.

Types and Materials

Wire Mesh Trays: Perforated or mesh designs improve airflow and heat dissipation, reducing the risk of overheating in densely packed low-voltage cables. Solid Steel or Galvanized Trays: Offer high mechanical strength and are suitable for indoor or outdoor installations, often coated with fire-retardant paint to enhance fire resistance.

Fire-

Resistant Coated Trays: Some trays are specifically tested for fire resistance with cables installed, ensuring the system remains functional during fire events.

Fire Resistance Standards

Fireproof cable trays are tested according to stringent fire standards to ensure safety: DIN 4102-12: German standard requiring trays to withstand temperatures up to 1000°C for 30, 60, or 90 minutes.

E

N 1363-1: European standard for fire testing of cable support systems, often used to classify products as E60 or E90, indicating the system remains operational for 60 or 90 minutes under fire conditions.

Installation Guidelines

Route Planning: Keep cable paths as short and straight as possible, avoiding unnecessary crossings and detours. Segregation: Low-voltage cables should be separated from high-voltage or power cables to minimize interference. Supports and Alignment: Trays must be level, plumb, and securely mounted, with horizontal deviation ≤2mm/m and vertical deviation ≤3mm/m.

Fireproofing Measures: Use fire barriers, fire-rated penetration seals, and maintain tray coatings intact to preserve fire resistance. Heat Dissipation: Maintain adequate spacing between cables and use perforated trays to prevent heat accumulation.

Maintenance and Inspection

Regularly check for corrosion, deformation, or mechanical damage. Ensure tray connections are firm and properly aligned. Perform routine fire resistance checks to maintain long-term effectiveness.

Recommended Products

Cablofil Fireproof Cable Trays: Suitable for low-voltage cables like Prysmian FP and Draka Firetuf, tested to DIN 4102-12 standards.

Meka Pro Fire-

Resistant Systems: Tested with cables installed, compliant with EN 1363-1, available in E60 and E90 classifications.

HERMI Fire-

Resistant Trays: Available in standard and lightweight options for surface cable laying. Legrand Wire Mesh Trays: Patented Safe-T-Edge design for low-voltage and data cables, optimized for load and safety. Fireproof metal cable trays are essential for ensuring both operational continuity and safety in environments where fire hazards are a concern.

Selecting the right material, fire rating, and installation method is critical for compliance and long-term reliability.