Belden TUSDK144RI2N OS2 144-fiber Riser Cable

Product Description

The Belden TUSDK144RI2N is a tight-buffer distribution-style fiber optic cable rated for OS2 single-mode transmission and classified for riser (CPE/OFCR) indoor vertical-run applications. Designed for high-density backbone and distribution runs, this 144-fiber construction supports long-haul, low-loss single-mode performance in commercial and enterprise building infrastructure. Licensed low-voltage and data-cabling contractors install this cable during structured cabling buildouts, equipment room to telecommunications room (ER-to-TR) backbone pulls, and campus intrabuilding vertical risers. The tight-buffer design simplifies termination and allows direct connector installation without a breakout kit.

This cable is suited for indoor riser environments in commercial office buildings, data centers, hospitals, educational facilities, and multi-story enterprise campuses. It supports OS2 single-mode applications including 1G, 10G, 40G, and 100G Ethernet over extended distances. The riser flame rating makes it appropriate for vertical cable runs through floor penetrations and building risers where CMR or OFCR-rated cabling is required by code. Installers typically use this product for high-fiber-count backbone links between wiring closets and main distribution frames.

Key Features

• OS2 single-mode fiber supports low-loss, long-distance transmission
• 144-fiber count provides high-density capacity in a single cable run
• Tight-buffer construction allows direct termination without a breakout assembly
• CPE and OFCR riser flame rating meets NEC requirements for indoor vertical installations
• Distribution-style design is suited for backbone and horizontal high-count runs

Compatibility

Designed as an OEM-style riser-rated OS2 single-mode distribution cable suitable for structured cabling systems requiring 144-fiber indoor backbone capacity.

Installation Notes

Installation should be performed by a qualified low-voltage or fiber optic cabling technician familiar with NEC Article 770 requirements for optical fiber cable. De-energize all adjacent powered equipment before pulling cable through conduit, trays, or riser sleeves. Observe the manufacturer minimum bend radius and maximum pulling tension to avoid fiber damage during installation. Seal all fire-rated floor penetrations with listed firestop materials per applicable building and fire codes after the cable pull is complete.