MAESTRO Descenders - Petzl

Dynamic Rescue Systems


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The MAESTRO is a descender designed specifically for technical rescue operations. It facilitates manipulation of heavy loads, for lowering or hauling, and may be used in both the primary system or in a back-up belay. This versatility allows rescuers to adapt to any situation they may encounter on the rescue scene. The ergonomic handle and integrated braking allow for comfortably controlled descent. Shifting from lowering position to hauling position is immediate, without the need to transfer the load. The integrated progress-capture pulley has a large diameter sheave mounted on sealed ball bearings, ensuring excellent hauling efficiency. The AUTO-LOCK system automatically locks the rope when the handle is not in use. Once locked, the rope can be taken up without having to manipulate the handle.

Detailed Description

  • Great versatility, ideal for technical rescue:
    • locking system with integrated progress-capture pulley allows the same device to be used for descent and hauling
    • can be used in both a single or twin primary system and in a back-up belay
    • lower connection point can be used to create different types of hauling systems
    • hole in the handle for installation of a distance control cord
  • Easy to use:
    • easy rope installation, thanks to the markings on the device
    • ergonomic handle allows the rope to be released progressively and enables comfortable control of the descent
    • immediate shift from lowering position to hauling position without having to transfer the load
    • AUTO-LOCK system allows the rope to be blocked automatically when the handle is not in use. Once locked, the rope can be taken up without having to manipulate the handle
  • Efficient for handling heavy loads:
    • integrated progress-capture pulley with very large diameter sheave mounted on sealed ball bearings; rotates in only one direction for excellent hauling efficiency
    • sheave is faceted, creating additional friction zones for the rope and thus additional braking on descents
    • integrated brake on the device to adjust the friction based on the load and the rope diameter
    • handling of loads up to 250 kg / 280 kg
  • Rope compatibility:
    • MAESTRO L - 12.5 to 13.0 mm diameter
    • MAESTRO S - 10.5 to 11.5 mm diameter




  • Material(s): aluminum, stainless steel, nylon
  • Weight: 1100g
  • Sheave type: faceted, on sealed ball bearings
  • Maximum working load: 250 kg (S) / 280 kg (L)
  • Breaking strength: 18 kN x 2 = 36 kN
  • Efficiency: 95%
  • Certifications: CE*, EN 341 type 2 class A, NFPA 1983 General Use, EAC.
    • * CE based on the requirements of EN 12278, EN 567, EN 15151 and EN 12841 type B and C standards

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