European Standard · Fall Protection
EN 341 – Descender Devices for Rescue
EN 341 is the European standard specifying requirements for descender devices used to lower a person under control during rescue operations, allowing a controlled descent at a safe, limited speed from height.
1. Scope
EN 341 applies to devices designed to control the rate of descent of a person along a rope or line during rescue, whether self-rescue or assisted rescue by another person, and classifies devices by class (A, B, C or D) based on intended use and descent parameters.
2. Exclusions & Related Standards
- Used together with a full body harness or rescue harness meeting EN 361 or EN 1497.
- Anchored to a suitable point meeting EN 795.
- Distinct from work positioning descenders used for routine rope access work under EN 12841, which serve a different operational purpose.
3. Key Requirements & Marking
Devices are classified by type and rated for maximum descent length, maximum load, and controlled descent speed within defined limits to prevent injury from excessive speed or sudden stops. Markings include class, maximum working length, and rated load.
4. Testing Overview
Testing includes controlled descent testing at maximum rated load and length to confirm the device maintains a safe descent speed, dynamic strength testing of the device housing and rope interface, and repeated use durability testing appropriate to rescue scenarios.
5. Selection Guide
Select a descender device rated for the specific rescue scenario, whether single-person self-rescue or dual-person assisted rescue, and confirm the maximum working length and load rating cover the descent height and combined weight of the rescuer and person being rescued where applicable.
6. Inspection, Care and Maintenance
- Inspect the device housing and rope contact surfaces for wear or damage before each use
- Confirm compatibility with the specific rope diameter and type recommended by the manufacturer
- Store away from heat, chemicals and sharp objects that could damage internal components
- Have the device serviced or inspected at the manufacturer’s recommended interval, particularly after any rescue use
7. Frequently Asked Questions
What is a descender device used for?
It allows a controlled, limited-speed descent along a rope during rescue operations, whether the person is rescuing themselves or being lowered by someone else.
What do the classes A, B, C and D mean under EN 341?
The classes distinguish descender devices by their intended use scenario and descent parameters, such as single rescue, multiple rescues, or specific working length and load ranges.
Is EN 341 the same as work positioning rope access equipment?
No, EN 341 covers rescue descent devices, while routine rope access work positioning equipment is covered separately under EN 12841.
Can one person use an EN 341 device to rescue another?
Yes, depending on the device class, some EN 341 descenders are specifically rated for assisted rescue of a second person.
How fast does a rescue descender lower a person?
Devices are designed to maintain a controlled, safe descent speed within limits defined by the standard, avoiding both excessive speed and sudden stopping forces.