Tray-type fireproof cable trays are specialized systems designed to protect electrical cables from fire, with models such as Cablofil FP, FireMaster®, and Prysmian FP series, offering fire resistance from 30 to 90 minutes under standardized testing.

Common Models and Systems

• Cablofil Fireproof Cable Trays: Designed for low and high voltage cables, these basket-type trays meet stringent fire safety requirements using the DIN 4102-12 standard, tested at temperatures up to 1000°C for 30, 60, and 90 minutes. They are widely used in construction, power, oil, gas, petrochemical, rail, and utilities industries. Accessories like Ellis Patents Phoenix Cable Cleats are recommended to maintain tray integrity during fire events .
• FireMaster® Cable Tray Wraps: These are insulated wraps for instrument control cables, providing 30-minute hydrocarbon fire protection. The wrap consists of FireMaster® Marine Plus blanket fully encapsulated in aluminum foil, secured with steel banding straps at 150 mm centers. Overlaps of 50–75 mm are used at joints, and additional weather protection can be added with corrugated aluminum sheeting. The system is FM Approved and tested according to ASTM E1725-95 and ASTM E1529 hydrocarbon fire curves .
• Prysmian FP400 and FP600 / Draka Firetuf: These cables are compatible with fireproof tray systems like Cablofil, providing enhanced fire resistance for both low and high voltage applications .

Specifications and Features

• Materials: Typically high-strength steel, stainless steel, or aluminum, often with protective coatings or wraps for fire resistance .
• Tray Types: Basket trays, solid-bottom trays, ventilated trays, and channel trays are available depending on cable type and heat dissipation requirements .
• Fire Ratings: Fireproof trays are tested for 30, 60, and 90 minutes under standardized fire conditions. Ratings may vary by standard (DIN, UL, ASTM) and application (hydrocarbon vs. general fire), .
• Dimensions: Widths and depths vary; for example, FireMaster® wraps can accommodate trays up to 1220 mm wide, with banding straps spaced at 150 mm centers .
• Installation: Includes secure banding, mesh lining to prevent slumping, and proper overlap at joints. Firestop accessories like 3M moldable putty or pillows may be used for wall penetrations .

Standards and Compliance

• DIN 4102-12: German standard for fire-resistant cable trays, used by Cablofil .
• ASTM E1725-95 / ASTM E1529: Hydrocarbon fire testing for FireMaster® wraps .
• UL/FM Approvals: Many fireproof trays and wraps are UL Listed or FM Approved, ensuring compliance with international fire safety standards .

Summary

Tray-type fireproof cable trays are essential for protecting electrical and control cables in high-risk environments. Cablofil, FireMaster®, and Prysmian FP series are leading solutions, offering tested fire resistance, robust materials, and standardized installation methods. Selection depends on cable type, fire rating requirements, environmental conditions, and applicable standards. Accessories like cleats, banding straps, and firestop putty ensure proper installation and maintain fire integrity.