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ZAA 5.5 by N & S: EU class O3 trailer with a gross vehicle weight of 5,000 kg, a length of 9,460 mm and an unladen weight of 1,480 kg
With a gross vehicle weight of 5,000 kg, the ZAA 5.5 falls into EU trailer class O3, the medium-weight trailers between 3.5 and 10 tonnes. Within that class it sits toward the lower end, only just above the boundary with the light O2 trailers, which sits at 3.5 tonnes.
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At a length of 9,460 mm and a width of 2,480 mm, the ZAA 5.5 has an unladen weight of only 1,480 kg, giving a payload of 3,520 kg, well above its own weight. The wheelbase is 6,200 mm, and the four wheels are spread across two axles. For its length, the trailer is therefore unusually lightly built, pointing to a design for general cargo rather than heavy goods.
As an O3 trailer, air brakes are required, and the towing vehicle needs a matching brake system with a two-line connection. The rig usually needs at least driving licence category C1E or CE, depending on the towing vehicle's own unladen weight. Here too, the towing vehicle's brake system must suit the two-line air brake setup.
With such a light body carrying a high payload share, check the frame for sagging and the axle mounts for wear, since light constructions show deformation from overloading sooner than heavier ones. Also check: condition of the brake system, bearing play on both axles, tyre condition, and confirm a valid roadworthiness inspection is on file.
Sources: SpecCodex-Register: Kennwerte des Modells ZAA 5.5
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