• ISC D4 Escape Device

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The D4 Work/Rescue Descender features a unique and innovative cam action, which offers precise control at slow or fast speeds. The progressive cam works by way of one cam operating inside another cam.


✔   The D4 has a 240kg (500lbs) Working load limit which means it is suitable for two-man rescue, without the need for the creation of extra friction.

✔   The handle mechanism is designed to rotate through 360º making its use easier and simpler.

✔   The handle itself is made from aluminium rather than plastic and is coated in a specially chosen paint which provides extra grip. 

✔   Cleverly, the handle rotation is accompanied by audible clicks which help the user identify the correct position of the handle.


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  • Rope Size: 10.5-11.5mm (7/16")

  • Anti Panic Function

  • MBS: 3,597 lbf. (16kN)

  • Weight: 24 oz.

  • Made outside of the US.


isc d4 descender

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ISC D4 Escape Device

  • Brand: ISC
  • Model: RP880A
  • $233.78

WARNING: Cancer and Reproductive Harm:

Tags: prnr, ISC D4 Escape Device, ISC, escape device, personal escape devices, self braking descenders, descenders, ISC, RP880A