Belden Inc. FD3D144RK OM3 Tight Buffer Plenum Fiber

Product Description

The BELDEN INC. FD3D144RK is a 14-fiber, OM3 tight buffer multimode plenum-rated fiber optic cable designed for structured cabling installations in commercial and industrial environments. Classified under the FX I/O product line, this cable meets plenum (CMP) requirements, making it suitable for air-handling spaces where fire and smoke ratings are required by code. The OM3 multimode designation supports high-bandwidth applications including 10 Gigabit Ethernet and other high-speed data transmission protocols. Licensed low-voltage contractors and data communications installers are the primary trades responsible for termination and placement of this cable.

This cable is well-suited for intra-building backbone and horizontal runs where plenum air-handling space is encountered. The tight buffer construction provides added mechanical protection compared to loose tube designs, simplifying direct termination without the need for breakout kits. Typical applications include data centers, enterprise networks, campus backbones, and equipment room-to-telecommunications room runs requiring an OM3-rated multimode pathway. Sold as a single unit (EA) per the supplier unit of measure.

Key Features

• OM3 multimode classification supports 10 Gigabit Ethernet and high-bandwidth applications
• Plenum (CMP) fire rating approved for installation in air-handling spaces
• Tight buffer construction enables direct termination without breakout hardware
• 14-fiber count suits medium-density backbone and horizontal distribution runs
• FX I/O product line designed for structured cabling flexibility

Compatibility

Designed as an OEM-style plenum multimode fiber cable for use with OM3-compatible fiber optic connectors, patch panels, and structured cabling systems in commercial building environments.

Installation Notes

Installation should be performed by a licensed low-voltage or data communications contractor in accordance with NFPA 70 (NEC) Article 770 governing optical fiber cables. De-energize and verify lockout/tagout of any adjacent electrical systems before pulling cable through shared pathways. Minimum bend radius requirements for tight buffer fiber must be observed during pulling and routing to prevent signal degradation. Plenum-rated cable must be used in all air-handling ceiling and raised-floor spaces as required by the Authority Having Jurisdiction.