Belden Inc. FISR576RZ 576-fiber OS2 Ribbon Cable Ofnr

Product Description

The BELDEN INC. FISR576RZ is an OS2 single-mode fiber optic ribbon cable rated for OFNR (Optical Fiber Nonconductive Riser) installations. It houses 576 individual fibers arranged in a ribbon configuration, making it well-suited for high-density backbone runs where large fiber counts must be routed through riser pathways between floors. Licensed low-voltage contractors and structured cabling installers work with this cable type in commercial and industrial settings where long-distance, low-loss single-mode transmission is required. The ribbon construction supports mass-fusion splicing, which reduces termination time on large-count installations.

This cable is used in riser-rated vertical pathway applications inside commercial buildings, data centers, and campus backbone infrastructures. The OS2 single-mode specification supports high-bandwidth, long-reach links typical of enterprise network backelines, fiber-to-the-floor distribution systems, and inter-building connections where riser fire ratings are required by code. It is sold per unit as an individual cable assembly or reel and is categorized under fiber optic cable products.

Key Features

• OS2 single-mode fiber for long-distance, low-attenuation signal transmission
• 576-fiber count in ribbon format enables high-density routing in conduit or cable tray
• OFNR riser rating meets NEC Article 770 requirements for vertical riser installations
• Ribbon construction compatible with mass-fusion splicing for faster high-count terminations
• Nonconductive design eliminates the need for grounding in low-voltage pathways

Compatibility

Designed as an OEM-style replacement or new-installation fiber optic ribbon cable for riser-rated single-mode backbone applications in commercial structured cabling systems.

Installation Notes

Installation should be performed by a licensed low-voltage or structured cabling contractor familiar with NEC Article 770 requirements for optical fiber riser cables. De-energize any adjacent electrical systems and follow building management protocols before pulling cable through riser sleeves or conduit. Observe the cable manufacturer's minimum bend radius and maximum pull-tension limits during installation to avoid fiber damage. Mass-fusion splice equipment is recommended for efficient field termination of the ribbon fiber groups.