Eaton N390-139M-8L-AP 139 m MPO to LC OS2 Breakout Cable

Split an 8-fiber singlemode MPO connection into four duplex LC links without adding separate fan-out modules. Eaton N390-139M-8L-AP provides a 139 m OS2 8.3/125 fiber run with an 8-fiber APC MPO female connector at the trunk end and four APC LC duplex branch connections at the equipment end. The eight optical fibers correspond to four transmit-and-receive duplex paths. The cable fits structured fiber installations where an MPO trunk must transition directly to LC-connected patch panels, transceivers, or other duplex fiber interfaces. Its long 139 m assembly length supports pathways between telecommunications rooms, distribution frames, and remote cabinets where a shorter patch lead would not reach. Singlemode OS2 fiber is intended for long-reach optical links rather than short-distance multimode channel extensions. APC-polished MPO and LC interfaces use angled fiber end faces to reduce reflected optical signal, making this assembly appropriate where APC connector compatibility is required throughout the channel. The breakout construction consolidates four duplex links into one 8-fiber MPO trunk-side connection, preserving port density at the MPO side while presenting familiar LC duplex connections at the branch side. Match MPO fiber count, APC polish type, connector gender, and LC interface requirements before installation.