Fuel Cell Compressor

Rotrex was one of the pioneers in the development of air compressors for fuel cell systems. Close corporation with some of largest fuel cell producers has resulted in a class leading fuel cell compressor designed to boost the next generation of fuel cell applications.

EK10AA Fuel cell compressor

The Rotrex Fuel Cell compressor (”EK10AA”) supplies oxygen to Fuel Cell systems. The ultra compact and lightweight compressor is a combination of a low speed PMSM motor, coupled directly together with the patented Rotrex traction drive spinning a high efficient centrifugal compressor. The result is a class leading air compressor, designed specifically for Fuel-Cell systems.

Key benefits

  • Clean Oil-free, linear and non-pulsing air supply
  • Ultra-compact, lightweight and flexible integration
  • Automotive design – high resistance to shock/impacts
  • Class-leading efficiency

EK10 Fuel Cell Compressor



Are you interested in more information ? Please contact us at contact@rotrex.com or use the form below

Please contact me regarding your fuel cell compressor solutions


For full specification sheet, please download the Technical Datasheet.

Characteristic EK10AA-PT54 EK10AA-PT57*
Recommended air mass flow range 0,025 – 0,080 kg/s 0,060—0,110 kg/s
Recommended pressure ratio range (**) 1,4 – 2,2 1,4 — 2,0
Physical dimensions (LxHxW) 321 x 155 x 188 mm
Weight (operational) ≈ 13 kg
Internal drive ratio 1 : 8.44
Maximum motor shaft speed 16.600 RPM
Maximum impeller speed 140.000 RPM
Rated motor power 13 kW
Enclosure rating IP67 minimum

(*) For possible operation with PT57, please contact us for more information (support@rotrex.com).

(**) With current impeller design. Dedicated impeller design is possible to match customer requirements.

Compressor maps

Dedicated impeller geometries for maximization of aerodynamic efficiency. Compressor maps are created on our own in-house SAE flow rigs.

CAD models

For CAD model of the EK10AA and inverters, please send an inquiry to support@rotrex.com.


The EK10AA is designed for a system life of 20.000 Hours, with preventive maintenance each 5.000 Hours*.

Maintenance procedures should be able to be performed quick and safely, ensuring lowest possible downtime of the Fuel Cell. Therefore, through almost a decade of experience with the Fuel Cell industry, we have incorporated into the design, the most simple maintenance procedure to date.

*Application dependant.

EK10AA Availability

The EK10AA is currently offered as B-Sample prototypes made on customer request, intended for testing/evaluation and smaller series production. Rotrex strive to offer highest level of flexibility, hence the EK10AA can be tailored to  specific application requirements. Please contact us for more information.

To receive a formal quotation on your EK10AA unit, please send an inquiry to support@rotrex.com.

Why Rotrex and Fuel Cells?

Rotrex has existed for more than 20 years and develops, produces and markets centrifugal superchargers for a wide range of industries based on patented traction technology for OEM, OES, and aftermarket companies worldwide.

The EK10AA is a new product to our product portfolio and our acknowledgement to take part of the all important, green energy transition. The air compressor for Fuel Cells is a key component; hence our aim is to assist towards a quick and safe shift from fossil fuels to zero-emission propulsion, ensuring a healthy environment for our future generations.

For the past decade, fuel cell applications has been part of our business, with references to the majority of global Fuel Cell companies.

Although the product is completely new, it is based on our patented traction drive, which has evolved and improved over more than twenty years. With the help from InnoBooster (Article, in Danish) and customer’s projects, the EK10AA is now a reality which we are very proud of!

Please send us an email if you want to know more: support@rotrex.com