What is the Harken PowerSeat™?

Cos'è il PowerSeat

The Harken PowerSeat™ is a comfortable powered seat designed for use by rope access operators as a powered ascender and manual friction brake descender. Used where the operator is working in a fall-arrest harness, this seating arrangement eliminates wasted energy maintaining an upright position, enabling the operator to work at height for longer periods. Even more importantly, safety is greatly enhanced through the significant reduction in fatigue.

Full 360-degree working area allows unobstructed access, even in confined spaces. The PowerSeat™ works with standard approved harness equipment that acts as a personal fall-arrest system, and does not replace it. It is a tool to be used with an existing safety system. The portable unit weighs just 14 kg so it’s easy to carry around, yet strong, durable, and corrosion-resistant.


How does the Harken PowerSeat™ work?

safety standards

The Harken PowerSeat™ is a petrol engine device that powers a winch and works with two rope connections for harness and rope grab. It is always used in conjunction with personal fall-arrest systems and equipment meeting EN363 requirements, which include shock-absorbing lanyards (to EN355 standard), a full body harness (to EN361, EN358), and a rope grab unit suitable for use with EN1891 Class A rope with diameters between 10.5 and 13 mm.

The operator, fitted with a safety harness, runs the safety line through the rope grab unit attached to the EN813 certified harness. The main line is then fed through the pulley lead system to the winch.

This line is then wound into the winch in a clockwise direction, led over the self-tailing arm and fed into the self-tailing jaws. The line can now be loaded into the jaws and then the top cover, when released, will spring back into place to cover the line. The line must be wrapped around the drum for a minimum of 3 turns and a maximum of 4 turns, dependent upon the operator’s weight, type of rope and working conditions. The wraps should not overlap. The operator sits on the seat, legs either side of the upright.

To ascend, the motor is started and the handle is used to control and engage the winch. The line will automatically feed through the winch jaws and does not need to be held. To descend, the line coming out of the winch jaws is taken in one hand and the speed of the descent is controlled by exerting tension or feeding the line through the jaws, whilst the other hand twists the knob to release the clamping effect of the jaws. To stop the descent, the knob is released and the jaws will automatically clamp the line acting as a `brake`.

(For further information download the manual at the bottom of this page)


Who is the Harken PowerSeat™ for?

Designed as an adaptable unit that can be used anywhere rope access is possible, the PowerSeat™ is ideal for use on wind turbines, building exteriors, search and rescue scenarios, and in a wide range of industries including:

  • Construction
  • Renewable Energy
  • Facilities Management
  • Marine
  • Stage Management & Filming
  • Telecommunications
  • Utilities
  • Oil & Gas Sectors

In fact, wherever productivity and comfort are valued, the Harken PowerSeat™ is the best solution. With the PowerSeat™ it is possible to work in comfort for extended periods, providing up to a 50% boost to productivity in a range of fields.


Why is the Harken PowerSeat™ so safe?

The Harken PowerSeat™ is designed to be completely safe, and because operation is so straightforward it is fully controllable. The fail-safe brake system ensures that it is impossible to go into free fall. It operates using a fail-safe dead man’s switch to control ascent speed, and descent control is carried out manually ensuring that you can always go down. The operator is protected by a robust frame and the encapsulating jaw cover ensures that fingers and clothing can’t be caught. In an emergency the PowerSeat™ can be evacuated safely and left behind, since the operator is already clipped to conventional harness equipment.


The PowerSeat™has been tested in the most extreme conditions and has proved to be a valuable tool in a conventional climbing operation, providing that extra degree of safety. Using the PowerSeat™ reduces fatigue and chafe, and eliminates suspension trauma.

The PowerSeat™ load rating allows for a safe working load of 273 kg, which means it can handle a two-person load in rescue situations.



Technical Specifications


Max Lifting Load 273 kg
Max Line Speed 15 m/min
Weight 14 kg

Fuel consumption varies with weight and usage but the petrol motor is extremely efficient and only uses a few litres of unleaded petrol with four-stroke mix for a full day’s work at height.

Load-carrying gears and pins are stainless steel for strength and durability. Sealed lubrication gearbox and high-load ball bearings reduce friction under load, are corrosion resistant, and do not require lubrication.  The drum surface is designed to be kind to rope.

Is the Harken PowerSeat™ a cost-effective solution for your business?


Even the most experienced operator’s working day is restricted when working at height, in a conventional harness, which leads to eventual discomfort. Not so when using the Harken PowerSeat™. Its comfort and support means you can significantly extend the working day, saving substantially on operational costs and wage bills. The Harken PowerSeat™ soon provides a good return on investment. A broader spectrum of physical abilities in the workforce can now work at height too.
For more information on pricing please contact us at sales@harkenindustrial.com.


What are the safety standards?

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



Gas PowerSeat Manual - English
Gas PowerSeat Manual - English
Powerseat Manual_090913 ENG_web.pdf
2.5 MiB
Electric PowerSeat Manual - English
Electric PowerSeat Manual - English
PowerseatElectricManual_300114A ENG_web.pdf
3.0 MiB