Compact Gas PowerSeat® Ascender
Compact Gas PowerSeat® Ascender

Part No. PWRS-GC

The Harken Industrial Compact Gas PowerSeat® ascenders are lightweight portable winches that are used as mechanical ascenders for working at height and other winching applications.

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.

Developed as a requirement in industry, the Gas PowerSeat provides operators with a prolonged usage ascender which accommodates an unlimited length of rope pull.

The PowerSeat can be operated with ease and confidence, even in situations where engine emissions are not restricted, providing a level of comfort and security that directly increases operator productivity and efficiency.

Suitable for outdoor rescue and utility winching/lifting markets.


PS Speed Control

Speed Control

The unit is operated using a fail-safe dead man’s switch to control ascent speed, up to 15 m/min (49.2 ft/min).

PS Break


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.

PS Compact break and frame

Automatic Cut-out

The Compact Gas PowerSeat engine is tuned to stall when the working load is exceeded.

PS Durability


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



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

Ideal for the Following Applications

The PowerSeat is ideal for use in a wide range of applications:

  • Construction/Steel Frame and Envelope Projects
  • Renewable Energy/Blade Cleaning
  • Facilities Management/Asset Integrity Inspections
  • Marine Rigging and Vessel Maintenance
  • Stage Management, Filming and Rigging
  • Telecommunications/Mast Erection
  • Architectural/Building Survey
  • Utility and Oil and Gas Sectors

Product Details

Description Max line speed Weight Rope Ø Max rated load
Min Max
ft/min m/min lb kg in mm in mm lb kN
PWRS-GC Compact gas 49 15 28 13 3/8 10 1/2 12.7 600 2.7
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