West Penn FI-4251 Single Mode ST 900um Connector

Get reliable, fast field terminations for critical fiber runs with the West Penn Wire FI-4251 Single Mode ST 900µm Connector. Designed for professional low-voltage and IT teams, this field-installable ST connector delivers ST/UPC single-mode performance ideal for security, surveillance and monitoring links where low loss and dependable signal integrity matter. The connector ships with a 900 µm boot for tight-buffered fiber and supports alternate diameters (250 µm with a breakout kit, or 2–3 mm with jacketed boots) to suit a wide range of fiber cabling used in access control, CCTV, and network backbone paths. The booted design improves strain relief and durability on the job, while compact packaging (1 per pack) keeps spares handy for rapid repairs. Manufactured in the US as part of the FX Brilliance line, the FI-4251 offers technicians a consistent, repeatable termination that minimizes rework. Add this connector to your toolkit to speed deployments and keep security, monitoring and networking systems running—order today or use it on your next field installation.

• Fast, field-installable ST termination that reduces onsite labor and downtime for security and surveillance installs
• Single-mode ST/UPC performance for long-distance, low-loss links in monitoring and networking environments
• Includes 900 µm boot for tight-buffered fiber; supports 250 µm and jacketed 2–3 mm fibers with optional kits
• Rugged, booted design and US manufacturing for consistent, reliable connections in critical low-voltage systems
• Compact, 1-pack format ideal for on-the-go technicians and targeted repairs or deployments