The ISC A-B Descender (sold in Australia through FERNO) is a professional rescue, rope‑access, and work‑at‑height descender designed for two‑person loads, smooth control, and high durability. It’s one of ISC’s heavy‑duty devices built for emergency services, industrial rope access, and technical rescue teams.
🧩 What the ISC A‑B Descender is
A self‑braking rescue descender made by ISC Wales (International Safety Components) and distributed in Australia by FERNO. It’s designed for:
Rope access technicians
Fire & rescue teams
Confined space rescue
Industrial height safety
It allows controlled lowering, belaying, and two‑person rescue loads.
Auto‑braking cam Locks the rope when the handle is released — essential for rescue safety.
Smooth, progressive control The handle gives fine modulation for slow or fast descent.
High load rating Typically rated for up to 200–240 kg (varies by model), meaning it can handle rescuer + patient.
Aluminium construction CNC‑machined for strength and heat dissipation.
Midline loading Rope can be inserted without detaching from the harness anchor.
Panic brake function (on most versions) If the user pulls the handle too hard, the device locks automatically.
Compatible with common rescue rope diameters Usually 10.5–12.5 mm static rope (check exact model).