What type of devices are ascenders classified as?

Ascenders are classified as group seized devices for ascending a fixed rope because they are specifically designed to allow a person to move upward along a rope while providing a secure grip. The mechanism of these devices typically involves a cam or ratchet system that provides friction in one direction, preventing descent when the user stops pulling or bears weight on them.

This functionality is critical in rope rescue operations where ascending vertical surfaces or ascending to reach a rescue victim or higher ground is essential. Ascenders are crafted with materials that ensure durability and strength, capable of handling the loads associated with rescuers and their equipment. Unlike other devices that may serve different functions, ascenders are specifically tailored to enable safe and efficient upward mobility on a rope system, distinguishing them from devices utilized for descending or anchoring purposes.