PowerSeat Ascenders

PowerSeat Electric Powered Ascender

PowerSeat Ascenders

PowerSeat Electric Powered Ascender

Part No. PWRS-E

Safe working load (kN) 3 kN

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Speed Control

The unit is operated using a fail-safe dead man’s switch to control ascent speed, up to 14 m/min (45.9 ft/min).


The braking system controls descent and provides workers protection against free falls. The encapsulating jaw cover protects fingers and clothing from catching in the winch.


Stainless steel load-carrying gears and pins provide strength and durability. Sealed gearbox and high-load roller bearings reduce friction under load. Roller bearings are corrosion resistant and do not require lubrication.

Ergonomic Design

The PowerSeat is designed to stay in an upright position, conserving operator energy by eliminating the constant adjustments needed to maintain position.


The Harken Industrial Electric PowerSeat has a 50.4V motor powered by 35 m long cable, connected to a 110/230V power supply transformer. Certified to IP54.

The Harken Industrial Electric PowerSeat unveils new possibilities in enclosed and confined space, rope access, and rescue. It quietly delivers a powerful 300 kilogram hoist capability, with the controlled sensitivity needed to perform the most delicate rescues, or the precise maneuvering of materials and components for installation or maintenance. It provides a lightweight, prolonged usage, powered ascender and utility winch. The Electric PowerSeat operates comfortably and confidently in oxygen and ventilation-starved environments, providing the operator with a level of safety and comfort that directly increases productivity and efficiency. Suitable for blade cleaning, confined space and indoor rope access and rescue applications.
Ascent speed with 120 kg/265 lb load (m/min)110V: 13.2; 230V: 13.5 m/min
Ascent speed with 120 kg/265 lb load (ft/min)110V: 43.3; 230V: 44.3 ft/min
Ascent speed with 300 kg/661 lb load (m/min)110V: 10.5; 230V: 10.5 m/min
Ascent speed with 300 kg/661 lb load (ft/min)110V: 34.4; 230V: 34.4 ft/min
Weight (kg)19 kg
Weight (lb)42 lb
Minimum line Ø (mm)10 mm
Minimum line Ø (in)3/8 in
Maximum line Ø (mm)12.7 mm
Maximum line Ø (in)1/2 in
Safe working load (kN)3 kN
Safe working load (kg)300 kg
Safe working load (lb)660 lb

The Harken Industrial PowerSeat is CE certified to the Machinery Directive and independently verified by Bureau Veritas.