Belden Inc. TFSLG012R25N 12-fiber OS2 Pvc Ofnr Cable

Product Description

The BELDEN INC. TFSLG012R25N is a tight-buffered, OS2 single-mode 12-fiber optical cable with a PVC outer jacket rated OFNR (Optical Fiber Nonconductive Riser). OS2 single-mode fiber supports long-distance, high-bandwidth signal transmission with low attenuation, making it the standard choice for backbone runs in commercial and industrial structured cabling systems. The PVC jacket provides flexibility for indoor routing while the OFNR rating satisfies riser-space fire codes. This cable is sold as a single unit (EA, quantity 1 per package) and is typically installed by licensed low-voltage or data communications contractors.

This cable is suited for indoor riser applications in commercial buildings, data centers, campus backbones, and industrial facilities where long-distance OS2 single-mode fiber runs are required. The 12-fiber count supports multiple simultaneous duplex channels, making it appropriate for structured cabling infrastructure that must serve multiple endpoints from a single cable run. It is commonly pulled through conduit or cable trays in riser shafts and telecommunications rooms.

Key Features

• OS2 single-mode fiber for low-attenuation, long-distance signal transmission
• 12-fiber count supports multiple duplex channels in a single cable
• PVC jacket with OFNR riser rating meets NEC requirements for riser-space installations
• Tight-buffered construction simplifies termination and splicing compared to loose-tube designs
• Indoor-rated design suitable for conduit and cable tray routing

Compatibility

Designed as an OEM-style replacement or new-installation fiber optic cable for indoor OS2 single-mode structured cabling systems requiring a 12-fiber, OFNR-rated riser cable.

Installation Notes

Installation should be performed by a licensed low-voltage or data communications contractor familiar with TIA-568 structured cabling standards and NEC Article 770 requirements for optical fiber cables. De-energize any adjacent electrical infrastructure before beginning cable pulls in shared riser shafts or cable trays. Do not exceed the cable minimum bend radius during pulling or final dress, as exceeding it can cause permanent signal degradation in single-mode fiber. Terminate or splice only with tools and connectors rated for tight-buffered OS2 single-mode fiber.