Pole Hardware Kit for Aerial Fiber: Tension Clamp, Suspension Clamp, and UPB Bracket

Aerial fiber jobs stall when the BOM lists “clamps” without saying which poles get tension hardware, which get hangers, and how those clamps mount to wood, concrete, or steel. Attenuation problems often start as mechanical problems: a suspension clamp used as a dead end, or a tension clamp hung mid-span with no pole interface. A clean pole hardware kit for aerial fiber needs three parts that work together—tension clamp, suspension clamp, and UPB bracket.

This kit guide uses CONWELL fiber optic accessories for ADSS and round optical cables on access networks (FTTH, 5G backhaul, smart-city routes). Specs below come from published product pages.

Kit part 1: Fiber optic tension clamp (dead-end poles)

The tension clamp terminates and anchors the optical cable so full axial load goes into the pole hardware without crushing the fiber. CONWELL wedge-style round-cable tension clamps are built for fast, tool-light dead-ending on access spans up to about 100 m: a pair of wedges grips inside a conical body as tension rises.

Shortlist by cable diameter and breaking load. PA500 covers 4.5–9 mm OD at 2.5/4 kN—typical for smaller round drop and access cables. Step up when the sheath grows: PAL1500D covers 12–15 mm at 15 kN. The fiber tension category also lists PA300 (2.5 kN), PA600 (4/5/10 kN), and other PA bodies when the route mix needs more than one diameter class. Put these only on terminals, major angles, and section points—not on every intermediate pole.

Kit part 2: Fiber suspension clamp (intermediate poles)

The suspension clamp hangs the cable at intermediate poles so vertical load and limited swing sit in a protected sleeve while the span keeps its designed sag. CONWELL’s SSA is the clear kit item for access ADSS-style routes: published cable diameter 4–5 / 5–9 mm, 8 kN breaking load, galvanized steel J-hook with neoprene sleeve and tightening screw. Product notes place it on intermediate poles with route angle under 20° and spans up to 100 m, mounted with a pigtail bolt or two pole bands.

Do not use SSA as a cheap dead end at terminals. If the design angle or tension exceeds the suspension role, switch that pole to a tension clamp from the fiber tension range.

Kit part 3: UPB universal pole bracket (the mount layer)

Clamps need a pole interface. The UPB universal pole bracket is CONWELL’s mounting plate for 1 to 3 parallel cables, up to 5 drop wires, and stay systems on wood, concrete, or steel poles. It can also act as a plate for cross-arms 5/14 and 5/15. Install with 14/16 mm through-bolts or two 20 mm bands. Published breaking load is 10 kN.

On a kit BOM, count UPB by poles that need a shared mount face—especially multi-cable poles and drop clusters—then hang the matching tension or suspension hardware from that interface. Buying PA500 and SSA without UPB (or an approved band/bolt alternative) leaves field crews improvising mounts that do not match the clamp design.

How the three parts map to the route

Build the kit quantities from the pole schedule

Write three columns before you price: tension clamps by cable OD class, suspension clamps by intermediate pole count, UPB (or band sets) by poles that need a mount plate. For a common access ADSS route under 100 m spans, a practical shortlist is PA500 for smaller round dead ends, SSA for intermediate hang points under 20°, and UPB wherever the design calls for a universal plate. Move to PAL1500D when the cable OD sits in the 12–15 mm window and the load table needs 15 kN.

Keep power ABC tension/suspension hardware off this fiber kit unless the project truly shares poles with LV-ABC—those CONWELL aerial power fittings are a different product family under aerial cable accessories.

FAQ

Can an SSA suspension clamp replace a PA500 tension clamp at a terminal pole?

No. SSA is for intermediate support on light-angle routes. Terminals and hard angles need a fiber tension / dead-end clamp sized to the cable OD and design load.

What cable diameter does PA500 cover?

4.5–9 mm OD, with a published breaking load of 2.5/4 kN, for access-network dead ends on spans up to about 100 m.

When should I choose PAL1500D instead of PA500?

When the optical cable OD is 12–15 mm and the design needs a 15 kN dead-end class. Do not stretch PA500 past its diameter window.

What does the UPB actually mount?

UPB mounts 1 to 3 parallel cables, up to 5 drop wires, and stay systems, using 14/16 mm bolts or two 20 mm bands, at a 10 kN published breaking load.

How should SSA be installed on the pole?

CONWELL describes a galvanized J-hook with neoprene sleeve, fixed with a pigtail bolt or two pole bands, for intermediate poles with route angle under 20°.

What three fields should the fiber pole-hardware RFQ include?

Cable outer diameter and type (ADSS / round), pole function counts (terminal / angle / intermediate), and mount method (UPB, through-bolt, or band).

Practical Takeaway

Spec the aerial fiber pole kit as a set: tension clamp for dead ends, suspension clamp for intermediate hang points, UPB for the pole interface. Shortlist PA500 (or PAL1500D for larger OD), SSA, and UPB. Send CONWELL cable OD, span class, and pole counts—ask for datasheets on those exact models before the first stringing crew climbs.