ACi4400 - GreenTech EC compact fans

ACi 4400 compact fan

Improved, integrated, intelligent.

The ACi4400 series is a fully compatible alternative to the classic 119 x 119 x 38 mm AC fans, simply upgrade the technology to reduce energy costs. The ACi4400 series has been designed to replace conventional AC fans that use low efficiency shaded-pole motors with GreenTech EC compact fans for the ultimate combination of high performance, compactness, and efficiency.

Primary Advantages:

  • Highly energy efficient – up to 75% less energy consumption
  • Long service life – up to 85% longer
  • Available with global voltage range of 100-240 VAC, frequency independent
  • Constant speed over the total voltage range
  • Available with protection rating up to IP65
  • Material: fiberglass-reinforced plastic, impeller PA, housing PBT
  • Electronic locked rotor protection
  • Air exhaust over struts, direction of rotation clockwise, on rotor
  • Electrical connection via 2 flat plugs 2.8 x 0.5 mm, flying leads optional
  • Mass: 0.55 lbs

Technology: The core technology of the product is the complete integration of the transformer and drive electronics into the motor hub. The aerodynamic blade shape with added winglets contributes to improving the overall efficiency and significantly reducing the acoustic noise by up to 8dB.

The drive concept of these energy-saving compact fans is based on the very efficient and durable ebm-papst GreenTech EC motor technology. The combination of energy savings and extended service life means these fans pay for themselves in the short term and continue to pay for themselves over the long haul with every operating hour. See the table below for a comparison to the ebm-papst 4600Z shaded-pole AC fan.

119mm Compact Axial Fan: ACi4400 GreenTech EC series vs 4600Z Shaded-Pole series

Target Markets and Applications

  • Industrial
  • Heating
  • Commercial Refrigeration
  • Ventilation


  • UL
  • CSA
  • VDE

GreenTech EC compact fans technology is fully compatible with their AC predecessors, which makes it just as easy to perform a conversion as it is to incorporate them into a new installation. With their compact dimensions and great efficiency they are employed above all for control cabinet cooling and in other cooling applications such as bottle coolers and refrigeration appliances.


W1G130 with GreenTech EC motor
W1G130 with GreenTech EC motor

The W1G130 with GreenTech EC motor requires up to 60% lower input capacity than its AC predecessor. For the consumer, that means that a conversion will pay for itself within no more than a year. It is based on the tried and tested ESM motor technology with 2 speed stages, which can be switched according to demand. This enables further energy savings to be made, increasing the overall efficiency of the application even further. The two programmed speed stages have been selected to cover the air performance of the two earlier AC predecessors, representing a further benefit for the customer. But the new GreenTech EC fan also has more to offer: With IP54 protection rating and permissible ambient temperature up to +70 °C, it is also eminently suitable for industrial applications. Wall ring and impeller are made of resilient, fiberglass-reinforced plastic, making additional corrosion protection unnecessary. The plastic material provides for a low weight. Aerodynamic optimisation measures on the impeller keep noise development low.