Petzl I’D L – self-braking descender for maintenance work and rescue operations
The Petzl I’D L is a self-braking descender designed for experienced rope workers and rescue personnel. It is used for controlled descent on fixed ropes and during rescue operations where higher loads may occur. The descender is designed for ropes with a diameter of 12.5–13 mm and features several functions that facilitate both use and safe handling.
Anti-panic function and automatic locking
The I’D L is fitted with an anti-panic function that automatically stops the descent if the user pulls too hard on the handle. This function helps to reduce the risk of an uncontrolled descent. The ergonomic handle allows the user to control the speed during descent.
With Petzl’s AUTO-LOCK system, the rope locks automatically when the handle is released. This allows the user to stop and position themselves at a work site without having to tie off the rope or manually lock the descender.
Easy installation and handling
The movable side plate has a safety catch that allows the rope to be fitted whilst the descender is still attached to the harness. Clear markings show how the rope should be positioned, and a fail-safe feature helps to reduce the risk of incorrect installation.
The I’D L also has two possible lowering configurations, where the rope either runs over the side plate or through a V-shaped friction channel.
Designed for rescue operations
The I’D L is designed to withstand loads of up to 150 kg when used by one person and up to 280 kg during a rescue operation involving two people, in accordance with the manufacturer’s instructions.
Once the rope is locked, the user can retrieve the rope without operating the handle. This makes it possible to use the descender in reversible lift systems or for shorter ascents.
The movable side plate can also be locked in place with a screw, which means that the I’D L can be integrated into existing rescue systems.
Durable construction
The descender features a stainless steel wear plate which reinforces the area where the rope runs and is subject to friction. For additional control during descent, the I’D L can be fitted with an open or closed auxiliary brake, depending on the load and rope diameter.









