When comparing Retractable Type Fall Arresters, working length is often one of the first specifications to examine. It indicates how far the lifeline can extend and helps distinguish between compact models and versions designed with longer lines. However, working length alone does not describe the complete performance of a device.
Webbing and steel cable are two common line configurations. Webbing versions such as SRL-2 and SRL-6W have listed working lengths of 2 and 6 meters, respectively. Steel cable models cover a broader range, including SRL-6S, SRL-10S, SRL-15S and SRL-20S, with lengths extending from 6 to 20 meters. The difference is not simply about extension distance. Line material, housing construction, connection components and overall device specifications also distinguish individual models.
Arresting distance provides another point of comparison. The listed maximum values vary across the range, from 0.95 meters for the SRL-6S to 1.45 meters for the SRL-6W and SRL-20S. These figures should be read together with their corresponding model numbers and test conditions. They are not interchangeable with working length, since the two measurements describe different characteristics of the equipment.
Maximum arresting force is another specification that deserves separate attention. Published values for the listed models range from 3.1 kN for the SRL-6W to 5.9 kN for the SRL-6S. Arresting force and arresting distance are related to fall-arrest performance, but one cannot be used to predict the other. Both should be considered alongside the applicable testing requirements and the complete fall protection system.
Rated capacity and static strength also need clear distinctions in technical documentation. For example, the SRL-2 and SRL-6W list a CE capacity of 100 kg, while their stated static strength values are 15 kN and 12 kN, respectively, over three minutes. These specifications describe different testing or rating parameters and should retain their original units and conditions when presented in product records.
Certification details complete the comparison. Model identification matters because certification information should correspond to the specific equipment configuration rather than being applied broadly to an entire product category. Keeping model numbers, line materials, dimensions and supporting documentation together reduces confusion when reviewing technical catalogues.
A clear comparison of Retractable Type Fall Arresters therefore involves more than sorting products by lifeline length. Looking at each model's construction, performance figures and certification records provides a more complete understanding of how different configurations are documented.
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