PETZL Auxiliary Brake for I'D - Closed Version | Enhanced Rope Control

Overview

The PETZL Auxiliary Brake for I D is a compact enhancement designed to boost braking action on the I D S, I D L, and I D Evac descenders. Available in an open and a closed version, it helps manage rope speed by increasing friction where you need it most. The closed variant redirects the rope continuously once threaded, while the open variant allows you to engage or release the rope from the extra friction spur at any moment during the descent. Built for rugged outdoor use, this accessory adds an extra layer of control without weighing you down.

Open vs Closed: how they differ

Open version D020DA00: provides flexible rope management, letting you engage or disengage the rope from the extra friction spur mid descent. This can be useful when adapting to changing loads or rope diameters on the fly.

Closed version D020EA00: delivers a constant rope redirect after threading, which is especially handy for pre rigged rescue kits or setups where a steady brake path is desired.

• Open: flexible, on-the-fly rope control during descent
• Closed: constant rope path for steady handling

Compatibility and build

Specifically engineered to fit the moving side plate of Petzl I D S, I D L, and I D Evac descenders, this brake is designed to integrate with your existing system. The unit is lightweight at about 20 g and crafted from stainless steel, offering durability and corrosion resistance in challenging environments.

• Fits the moving side plate of I D S (D020AA), I D L (D020BA), and I D Evac (D020CA) descenders
• Weight: ~20 g; material: stainless steel

Practical applications

In real-world use, the closed brake supports a secure, predictable rope path when lowering heavier loads or conducting controlled descents. The open version provides on demand rope management for dynamic situations where descent speed and tension may shift during a multi-person operation.

• Rescue kits with pre rigged configurations
• Industrial rope access and training scenarios
• Field-ready enhancement for demanding descent tasks

Key benefits to consider

• Increases braking action in relation to load and rope diameter
• Permanent rope return under all circumstances with the closed design
• Lightweight stainless steel construction for durability
• Compatible with popular Petzl I D descenders for versatile setups