What is the primary function of a fall arrestor?

The primary function of a fall arrestor is to stop a person's fall almost immediately when a fall occurs. This device is designed to catch and halt the downward movement of a worker who may be exposed to heights, successfully preventing them from reaching the ground or any lower level where they could sustain serious injuries.

Fall arrest systems are typically used in conjunction with harnesses, lanyards, and other personal protective equipment to ensure that if a fall happens, the arrestor will engage quickly to limit the distance fallen and reduce the impact forces. This critical function enhances safety for workers in environments where they perform tasks at elevation, such as construction sites or maintenance work on tall structures.

The focus of a fall arrestor is on immediate response to prevent injuries, rather than on other functions such as cushioning a fall, enabling controlled descents, or improving walking stability. Each of those other functions pertains to different safety equipment or actions, but they do not represent the primary purpose of a fall arrestor.