Custom MTP-12 Armored Trunk Cable, 12-144 Fibers, OS2

This configured-to-order trunk cable builds 12 to 144 OS2 9/125µm G.657.A1 fibers into a double-jacketed armored assembly terminated with US Conec MTP Elite connectors. It brings the backbone-class 0.35dB maximum insertion loss of elite MTP terminations to routes that need real mechanical protection: between buildings, through industrial plant, or anywhere a trunk must survive the pathway instead of being protected by it.

Product Highlights

• 12 to 144 fibers, Base-12 OS2 9/125µm G.657.A1
• US Conec MTP Elite connectors, female or male, APC
• Insertion loss ≤0.35dB, 0.15dB typical per MTP mated pair
• Double jacket with helical steel armor; OFNP or LSZH
• Polarity Type A, B or C to the link design
• 200N long-term, 660N short-term tensile rating

Backbone trunks cross the most hostile pathways in a facility: riser shafts shared with power, inter-building conduits, plant rooms with moving machinery. The double-jacket armored construction puts a helical steel tube around the fiber core, so the trunk carries the mechanical rating itself and the route does not depend on the condition of the conduit.

Parallel-optic links chain several mated pairs, so per-connector loss decides whether the channel closes. MTP Elite ferrules hold insertion loss to 0.35dB maximum with 0.15dB typical, roughly half the allowance of standard MTP terminations, which buys real headroom when the design stacks a trunk, two cassettes and patch cords end to end.

MTP links must land transmit on receive, and the trunk polarity is how that is engineered. Type A is straight-through, Type B is reversed, Type C is pair-flipped; the correct choice depends on the cassette and duplex cord plan at both ends. State the polarity method with the enquiry and the trunk is built and labeled to match it.

Base-12 construction scales the same trunk design from a single 12-fiber tube to 144 fibers in a 14.2mm double-jacketed build. Breakout legs are 2.0mm at 0.84m as standard, with pulling eyes and alternative leg arrangements available on request for long or difficult pulls.

Armored trunks pull like a cable, not like a patch cord: respect the 200N long-term limit, use the pulling eye option on long or conduit routes, and feed the trunk rather than dragging it around bends. The 10mm minimum bend radius of the G.657.A1 core is generous, but the practical limit on site is set by the trunk OD, so plan sweeps rather than right-angle turns at every direction change.

Trunks are built to the route: typical orders run from 1m (3ft) equipment-room links to 30m (98ft) and well beyond for inter-building pulls. Give the measured route with allowance for vertical drops and service loops, and the factory confirms the build and packaging for the stated length.

Every MTP termination is interferometry-checked for end-face geometry, and each finished trunk is 100% insertion loss and return loss tested on all fibers, with results shipped against the serial number. The 0.35dB maximum and 65dB return figures are verified per mated pair, and the armor and jacket are inspected over the full trunk length.

Send the fiber count, connector gender per end, polarity type, jacket rating, route length and any breakout or pulling-eye requirements. The factory returns a configuration drawing with the quotation, and production starts once the drawing is approved.