Belden Inc. FCSX12LDFT OS2 12-port Fiber Optic Cassette

Product Description

The BELDEN INC. FCSX12LDFT is a 12-port OS2 single-mode fiber optic cassette designed for field-termination applications within the FX ECX structured cabling system. It provides a clean, high-density patching interface inside an enclosure chassis, allowing technicians to terminate fiber runs directly at the cassette rather than pre-terminating at a separate location. The OS2 designation confirms this cassette is engineered for single-mode fiber, suited to long-distance backbone and inter-building runs where low attenuation and extended reach are required. Installation is handled by licensed low-voltage or datacom cabling technicians as part of a structured fiber distribution system.

This cassette is intended for use in commercial and enterprise structured cabling environments, including data centers, campus backbones, and telecommunications rooms. It slides into a compatible FX ECX chassis or enclosure to form a modular, scalable fiber distribution point. The field-termination design gives installers flexibility to cut fiber to exact length on site, reducing waste and allowing precise management of cable slack in high-density pathways.

Key Features

• OS2 single-mode fiber support for long-distance, low-loss backbone applications
• 12-port capacity in a cassette form factor for high-density fiber management
• Field-termination design allows on-site fiber preparation and termination
• Modular cassette architecture compatible with FX ECX chassis enclosures
• Compact, organized layout supports clean cable management in telecom rooms and data centers

Compatibility

Designed for use with the Belden FX ECX modular cassette enclosure system. Specific chassis compatibility should be confirmed against the FX ECX system documentation prior to installation.

Installation Notes

Installation should be performed by a qualified low-voltage or fiber optic cabling technician familiar with OS2 single-mode termination procedures. De-energize all active equipment connected to the fiber pathway before handling or terminating fiber. Field termination requires appropriate fusion splicing or mechanical termination tooling depending on the connector type used. Follow TIA-568 and applicable local codes for fiber optic infrastructure installation and bend-radius requirements.