Petzl Maestro S

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Descender with integrated progress-capture pulley, Compatible with 10.5 to 11.5mm diameter ropes, for loads up to 250kg

SKU: PETD024AA00 Category:



  • 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 (more information on this technique in the product’s instructions for use and in technical tips at
    – 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
  • Rope compatibility: 10.5 to 11.5 mm diameter


  • Material(s): aluminum, stainless steel, nylon
  • Weight: 1100 g
  • Min. rope diameter: 10,5 mm
  • Max. rope diameter: 11,5 mm
  • Sheave type: faceted, on sealed ball bearings
  • Maximum working load: 250 kg (more information in the Instructions for Use and in the technical tips at
  • Breaking strength: 18 kN x 2 = 36 kN
  • Efficiency: 86 %
  • Certifications: CE EN 12841 type C, EN 341, NFPA 1983 Technical Use, EAC


References D024AA00
Color(s) yellow
Rope compatibility 10.5 to 11.5 mm
Guarantee 3 years
Inner Pack Count 1

Additional information