» » Compact Battery PowerSeat® Ascender

Compact Battery PowerSeat® Ascender

Part No. PWRS-BC

The Compact Battery PowerSeat® ascenders are lightweight portable winches that are used as mechanical ascenders for working at height and other winching applications, including 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.

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

The PowerSeat 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.





PowerSeat BATTERY has a 48V lithium-ion battery with a BMS (Battery Management System) to preserve its useful life. Certified IP54.

PS electric handle




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).

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 PowerSeat Battery Compact has a thermal cut-out system within the motor to cut power to the seat 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 PowerSeat is CE certified to the Machinery Directive and independently verified by Bureau Veritas.

Battery life (in optimum conditions) is approximately 550 m (1804 ft) at 125 kg (276 lb).

Simple to Operate and Ideal for:

  • Wind turbines
  • Architectural and construction work
  • Industrial maintenance
  • Engineering and inspections
  • Indoor and outdoor applications
Visit the PowerSeat Website



Max Working Load

Max Ascent Speed

Product Video

Q: Is the PowerSeat just a mechanical ascender?

A: The certification of the PowerSeat allows it to be used as a powered ascender for access, as well as rigged to assist with hauling and pulling. For example, cliff rescue (when anchored to a strong point), or in conjunction with a tripod for confined space/winching operations.

Q: Is the PowerSeat only rated for single person use?

A: No, the PowerSeat can be used in tandem rescue situations to a maximum working load of 273 kg (601.9 lb).

Q: What happens if I inadvertently exceed the working load of the PowerSeat?

A: The gas PowerSeat engine is designed to stall when the working load is exceeded. The electric PowerSeat has a thermal cut-out within the transformer to cut power to the seat. In both cases, the seats are free to descend to release the load. The seats can be restarted to continue use.

Q: What is the accent speed?

A: Rate of climb is 15 m per minute at 120 kg (49.2 ft per minute at 265.6 lb), 11 m per minute at 273 kg (36.09 ft per minute at 601.9 lbs).

Q: What training is required? Can anyone use the PowerSeat?

A: Use of the PowerSeat must meet the regulations of the nation and industry in which it is used. It is restricted to those certified
for temporary work at height with access and positioning systems using ropes.

Q. What battery does the PowerSeat battery have and how long does the charge last?

A. PowerSeat battery has a 48V lithium-ion battery with a BMS (Battery Management System) to preserve its useful life. Certified
IP54. In optimum conditions this has a battery life of 550 m with a 125 kg load.

This is not PPE equipment: Use in conjunction with a full fall arrest system at all times.

Warnings and instructions

The user must follow the manufacturer's instructions for each component of the system.

These instructions must be provided to the user of this equipment. The user must read and understand these instructions before using this equipment.

Manufacturer's instructions must be followed for proper use and maintenance of this equipment.

Alterations or misuse of this equipment, or failure to follow these instructions, may result in serious injury or death.