ISC A-B Descender

The A-B Descender, Descent device for two-person rescue loads

The A-B Descender is a self-braking squeeze style descender suitable for use by rope access technicians, rescue personnel, tower workers, arborists and special forces.

Rated for use with two-person rescue loads, the A-B has an extendable handle that provides extra leverage and greater control when lowering heavy loads. This multi-use device can be used as a descender, ascender, hauling system brake, tension line break and work positioning adjustment element.

Features of the ISC A-B Descender include:
  • Equiped with a panic brake function which is activated when the user pulls too hard on the handle or lets go of the handle
  • Large top bobbin which improves rope retention
  • Rope latch allows user to remove the rope without detaching from their harness
  • Designed for use on single fixed ropes with diameters of 10.5 to 12.5mm


Please note that adequate training and judgment are needed to reduce the risks inherent in the use of this equipment. It is the responsibility of the purchaser to ensure that the user is adequately and competently trained in the use of this product. We strongly advise that you do not use the Petzl I’D without first undertaking appropriate training.



In stock (can be backordered)

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CE EN 12841-C

Technical Specifications
For use with single ropes between 10.5 and 12.5mm diameter

Working Load Limit



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