ABS 3a WH Rescue and Descent Device (Automatic Speed Regulation – 2 Persons)

ABS 3a WH Rescue and Descent Device (Automatic Speed Regulation – 2 Persons) is professional equipment developed for the fast, safe, and effortless evacuation of personnel remaining suspended after working at height operations on vertical and horizontal structures. With its integrated lifting system featuring an interchangeable non-reverse ratchet, automatic speed regulator, and seawater-resistant aluminum housing structure, it offers fully secure use for 1 or 2 persons (up to 200 kg) in wind turbines, steel structures, and industrial facilities.

ABS 3a WH Rescue and Descent Device (Automatic Speed Regulation – 2 Persons)

ABS 3a WH Rescue and Descent Device (Automatic Speed Regulation – 2 Persons) is specially designed for self-rescue or third-party evacuation of persons remaining suspended in personal fall protection equipment after a fall arrest event on vertical and horizontal structures. Its superior ball-bearing swivel attachment and advanced braking mechanism reduce safety rope wear during descent while effectively dampening impact loads acting on the user.

The high-strength Ø 10.5 mm EN 1891 Type A kernmantle static rope running through its robust, compact, and seawater-resistant aluminum housing provides maximum anchor safety with double-safety aluminum IKV 11 carabiners on both ends. The integrated lifting mechanism with an interchangeable non-reverse ratchet system allows the suspended personnel to be lifted slightly to release them from the safety lanyard, followed by a controlled descent at a constant speed of 1.5 m/s. Friction brake horns are located on the housing for manual intervention when necessary.

With its durable structure resistant to harsh environmental conditions and a wide operating temperature range between -40°C and +50°C, the ABS 3a WH perfectly adapts to the most challenging rescue scenarios in wind turbines (WKE), cable cars, power lines, transmission towers, and heavy industrial sites.

Technical Specifications

Integrated Lifting System: Thanks to its interchangeable non-reverse ratchet design, it allows the personnel suspended after a fall to be lifted up and safely evacuated.
Automatic Speed Regulation: Offers a constant average descent speed of 1.5 m/s, providing controlled and safe evacuation independent of human error.
Multi-User Capacity: Safely operates under nominal loads of 1 person (140 kg) and 2 persons (200 kg) according to EN standards, and 282 kg according to ANSI standards.
Corrosion-Resistant Housing: Compact aluminum enclosure resistant to seawater, harsh field conditions, and impacts.
Advanced Rope Equipment: Ø 10.5 mm high-strength KMS 105 EN 1891 Type A kernmantle static rope system.
Double Safety Carabiners: High-security IKV 11 aluminum carabiner equipment on both rope ends.
Extreme Operating Temperature: Full compliance with industrial and open field conditions with an operating environment tolerance between -40°C and +50°C.
Manual Brake Horns: Housing-mounted friction brake mechanism providing manual speed control and rope fixing capability when required.
International Certification: Full compliance with EN 341:2011/1A-1B, EN 1496:2017/A, and ANSI/ASSE Z359.4-2013 standards.

Technical Performance Data

Parameter / Feature	EN 341:2011 / EN 1496:2017	ANSI/ASSE Z359.4-2013
Nominal Load (1 Person)	140 kg	—
Nominal Load (2 Persons)	200 kg	282 kg
Minimum Load	50 kg	59 kg
Average Descent Speed	1.5 m/s	1.5 m/s
Maximum Descent Height	200 m	200 m
Descent Capacity (Nominal Load)	5,600 m (140 kg) / 800 m (200 kg)	200 m (282 kg)
Descent Capacity (Min. Load)	15,200 m (50 kg)	12,960 m (59 kg)
Static Test Load	20 kN	20 kN
Temperature Range	Between -40°C and +50°C	Between -40°C and +50°C
Device Weight & Dimensions	2.88 kg \| 203 x 200 x 128 mm