PowerSeat® Ascenders

PowerSeat Battery Powered Ascender – Compact

PowerSeat® Ascenders

PowerSeat Battery Powered Ascender – Compact


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 (46 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, are corrosion resistant, and do not require lubrication.

Automatic Cut-out

The Compact Battery PowerSeat has a thermal cut-out system within the motor to cut power to the seat when the working load is exceeded.


The Battery PowerSeat has a 50.4V lithium-ion battery with BMS (Battery Management System) to preserve its useful life. Certified to IP54. Battery life (in optimum conditions) allows for approximately 550 m (1804 ft) of travel with a 125 kg (276 lb) load.

The Compact Battery PowerSeat® ascenders are lightweight portable winches that are used as mechanical ascenders for working at height and other winching applications, including rope access and rescue. These compact versions maximize the efficiency of the PowerSeat as a hauling device, while maintaining their functionality as powered ascenders. The seats have been removed and the long stem shortened for significant reductions in weight and size. The user is suspended under the compact unit with full control from below. The Harken Industrial compact Battery PowerSeat provides operators with a prolonged usage ascender that accommodates an unlimited length of rope pull. It can be operated comfortably and confidently in both outdoor and indoor environments where engine emissions are restricted, providing a level of operator safety and comfort that directly increases productivity and efficiency. Suitable for blade cleaning, confined space and rescue applications.
Ascent speed with 125 kg/276 lb load (m/min)13.5 m/min
Ascent speed with 125 kg/276 lb load (ft/min)44.3 ft/min
Ascent speed with 300 kg/661 lb load (m/min)10.8 m/min
Ascent speed with 300 kg/661 lb load (ft/min)35.4 ft/min
Weight (kg)18 kg
Weight (lb)39 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
PowerSeat in Action
Elevated Safety Aboard The Harken Power Seat

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


Weight: Plus 3 kg (6.6 lb) for battery.