Description
ISC D5 Work/Rescue Descender
The D5 is a double-stop device with an auto-lock function. It is activated whenever the operator releases the handle and a panic-brake function. Also, it is not overly sensitive in normal use.
The D5 also has a double-locking safety mechanism. In addition to the locking button, the side plates are designed such that the plates cannot be rotated open while under load. This is due to the position of the carabiner. The D5 is easy to attach/detach from the rope without having to detach from the harness, therefore eliminating the risk of accidental dropping of the device.
The D5 features a progressive cam action, which offers precise control during low or high speeds. The cam is made from high-grade, solid stainless steel for maximum durability, even in harsh environments, such as geotech work.
A unique feature of the D5 Work/Rescue Descender is that the handle rotates through 360 degrees and emits audible ‘clicks’ as an indicator to the user of positive engagement of the mechanism.
It is also easy to back-feed the rope through the D5. Therefore the D5 can be used for smooth ascending or for emergency hauling (when used as part of a ‘Z-rig’).
ISC D5 Work/Rescue Descender Specifications
The D5 has a Working Load Limit (500lbs) 240kg, making it suitable for two-man rescue situations, without the need for the creation of extra friction
- Rope Size: 1/2″ (12.7mm)
- Unit Weight: 29oz (818g)
- Rated Load: 132-551lb (60-240kg)
- (MBS) Minimum Breaking Strength: 4945 lbf (22 kN)
- Standards: EN12841:20008/C, Meets NFPA1983 & ANSI Z359.4:2013









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