ISC D4 Pro Work/Rescue Belay Descender - Black - With Rope

ISC D4 Pro Work/Rescue Belay Descender - Black

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ISC D4 Pro Work/Rescue Belay Descender - Black

The standard D4 Work/Rescue Descender (RP880) has proven to be a popular Descender amongst Rope Access & Rescue users, all over the world.  Many users value the extra peace of mind of having a panic-brake function.

Feedback gathered from highly qualified and experienced 'Pro' users highlighted a demand for a device which does not incorporate a panic-brake function.  Enter the D4PRO!  The D4PRO Descender is the same great Work/Rescue Descender, but without the panic brake. 

This can be particularly useful on longer descents and in rescue/belay applications, where a broader 'sweet spot' is welcomed.

As the D4PRO does not incorporate a panic-brake, it is not possible for the device to fully meet the criteria of ANSI Standards.  The D4PRO is fully certified to EN 12841 (a panic brake is not a compulsory criteria of this standard).
If you require a Descender which fully meets ANSI standards, please see RP880 D4 Work/Rescue Descender, (with incorporated panic-brake).

Note: Also available with panic brake - (Click Here)

ISC D4 Pro Work/Rescue Belay Descender - Black Features:

  • Minimum Breaking Strength 3597 lbf. (16 kN)
  • Rope Diameter: 7/16" inch. (10.5 - 11.5 mm)
  • Number of persons: 2
  • WLL: 529 lbs. (240 kg)
  • Panic brake: No
  • EN12841
  • Color: Black


  • Width: 3.26" inches. (83 mm)
  • Height: 7.87" inches. (200 mm)
  • Weight: 24 oz. (678 g)

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