ISC D4 Descender for General 7/16″ Rope


The NEW D4 Pro 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 anti-panic function of the control handle makes this descender ANSI/OSHA Compliant.

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 aluminum 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.

Part Number: ISCD4


EN12841, ANSI Z359, NFPA 1983- meets the requirements of EN341

5kN Slip load
Max User Weight > 240kg (500lbs)

Compatible with rope diameter (mm) 10.5-11.5mm (7/16″)
Panic brake NO
Number of persons 2
(MBS) Minimum Breaking Strength (kN) 16
(MBS) Minimum Breaking Strength (lbf) 3597
Cam material Stainless Steel
Body finish Anodised
Weight (grams) 678
Weight (ounces) 24
Height (mm) 140
Height (inches) 5 1/2
Width (mm) 82
Width (inches) 3 1/4
Color Black
Thickness (inches) 3 7/8

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