Belden Inc. FS4H0126D OS2 Fiber Optic Patch Cable

Product Description

The BELDEN INC. FS4H0126D is an OS2 single-mode duplex fiber optic patch cable finished in black. OS2 cables carry laser-optimized single-mode fiber designed for long-distance, low-attenuation signal transmission in structured cabling and telecommunications infrastructure. The duplex construction provides two fiber strands in a single jacket, supporting full-duplex communication between active equipment. This patch cable is installed by licensed low-voltage technicians and network infrastructure specialists working on backbone or horizontal fiber runs in commercial and industrial environments.

The FS4H0126D is suited for data center interconnects, telecom rooms, and building backbone cabling where OS2 single-mode fiber is specified. Its duplex configuration makes it appropriate for connecting switches, transceivers, media converters, and fiber distribution panels. The black jacket color aids in visual cable management and identification in high-density patching environments. Installation typically occurs in commercial buildings, server rooms, and campus network facilities where long-reach single-mode fiber links are required.

Key Features

• OS2 single-mode fiber for low-attenuation, long-distance signal transmission
• Duplex construction with two fiber strands in a single jacket for full-duplex links
• Black jacket finish supports color-coded cable management in high-density environments
• Factory-terminated patch cable design for plug-and-play installation
• Sold as a single unit for precise quantity ordering

Compatibility

Designed as an OEM-style replacement or direct-fit patch cable for OS2 single-mode fiber optic installations using duplex connectors in structured cabling systems.

Installation Notes

Installation should be performed by a qualified low-voltage technician or registered communications distribution designer familiar with fiber optic handling procedures. Power down or disable active transceivers before connecting or disconnecting fiber patch cables to avoid eye hazard from laser light. Avoid bending the cable below the minimum bend radius specified for OS2 fiber to prevent signal degradation. Follow TIA-568 and applicable local structured cabling standards during installation and termination.