Compact fans

The ebm-papst compact fans are available in three designs: axial, centrifugal and diagonal fans. The name says it all with these fans, as they are characterised by their space-saving installation and flat design.

The compact fans from ebm-papst are available with AC or energy-saving, efficient DC technology. With a variety of control and monitoring functions, the fans can be expanded as required. The compact fans can fulfil approvals such as VDE, UL, CSA, EAC and CCC.

Power input
0,1 - 360 W
Areas of application
up to 5.200 Pa
Air volume
up to 1,600 m³/h
5 - 75 VDC, 11 - 440 VAC

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What is a compact fan?

A compact fan, often referred to as a miniature or small fan, is a special type of fan that is used in a variety of applications where efficient air movement in a confined space is required. These types of fans are known for their small size and high efficiency and are mainly used in electronic devices, telecommunications equipment, laptops and other compact applications.

How does a compact fan work?

A compact fan is a small but powerful device that is used to move air in a variety of applications, especially in compact electronic devices and systems. Its main purpose is cooling through efficient air circulation in order to reduce the operating temperature of components and optimise their performance and service life.

Basic principle

The basic mechanism of a compact fan is based on an electric motor that drives a fan wheel or several fan blades. This rotation generates an air flow that is orientated depending on the design of the fan.

Axial fans

Axial fans, like their big brothers the axial fans, move the air parallel to the axis of rotation of the fan. This design is often found in compact fans, as it can be aimed directly at the components to be cooled.

Centrifugal fans

Centrifugal fans, like their big brothers the centrifugal fans, guide the air in a radial path away from the axis of rotation. They are suitable for applications in which the air has to be deflected.

Diagonal fans

Diagonal fans combine the properties of axial and radial fans by conveying the air diagonally to the axis of rotation, which enables efficient air movement with the possibility of deflecting the air flow.

Functional features and efficiency

Compact fans are characterised by their high efficiency and the ability to move a significant amount of air despite their small size. They are optimised to offer an optimum compromise between air volume flow (the amount of air moved in a given time) and pressure build-up (the ability to move air against resistance). Efficiency is further improved by the use of modern motor technologies such as brushless DC motors (BLDC), which offer precise speed control, low energy consumption and a long service life.

Anwendungen und Einsatzgebiete Applications and areas of use

The function of a compact fan is crucial for maintaining an optimum operating temperature in electronic devices and systems. Thanks to their efficient air movement, they make a significant contribution to the performance and reliability of modern technologies and can therefore be found in a wide range of applications:

Electronics cooling: In PCs, servers, laptops and other electronic devices to dissipate heat. Telecommunications equipment: For cooling base stations and network equipment. LED lighting: For cooling high-power LEDs, which can overheat without adequate heat dissipation. Enclosure cooling

How are compact fans constructed?

The design of compact fans is specifically geared towards offering maximum cooling capacity in the smallest possible space. The main components of a compact fan are

Electric motor, Fan blade, fan wheel Enclosure and the control electronics.

The design of a compact fan is such that it generates an efficient air flow while minimising space requirements and energy consumption. The fan blades are aerodynamically shaped to minimise air resistance and generate a strong air flow. The motor is usually positioned centrally behind the fan blades or in the centre of the fan wheel to ensure a compact design.

Electric motor

The central element of a compact fan is the electric motor that generates the rotary movement. Many of these fans use brushless DC motors (BLDC), which are particularly valued for their durability, efficiency and low noise levels. These motors are a key element in ensuring the reliability and performance of the fan.

Fan blade, fan wheel

The fan blades or the fan wheel, which are directly connected to the motor, play an essential role in generating the air flow. Their shape, number and arrangement are critical factors that significantly influence the efficiency and performance of the fan. Careful design of these components is crucial for optimising air movement and therefore for the effectiveness of the compact fan.


The housing of a compact fan serves as a frame that encloses the motor and the fan blades or the fan wheel and at the same time directs the air flow. It protects the internal components from external influences and contributes to noise reduction. The design of the housing not only ensures the safety of the components, but also improves the efficiency of the air flow.

Electronic control unit

The integration of electronic control units in modern compact fans enables precise speed control. This technology is of great importance for flexibly adapting the cooling capacity to the respective demand situation and saving energy at the same time. By utilising advanced control electronics, operators can fine-tune the fan's operating parameters to achieve an optimal balance between cooling and energy consumption.

Structure and mode of operation

The design of a compact fan is such that it generates an efficient air flow while minimising space requirements and energy consumption. The fan blades and the fan wheel are aerodynamically shaped to minimise air resistance and generate a strong air flow. The motor is usually positioned centrally behind the fan blades to ensure a compact design.

Special features

Some compact fans have special features that further increase their efficiency and variety of applications:

PWM control (pulse width modulation): Enables fine-tuned fan speed control, resulting in improved energy efficiency and noise reduction. Dust and water protection: Certain models are designed for use in harsh environments and have protection classes such as IP55 or IP67, which protect them against dust and water. Temperature sensors: Some compact fans are equipped with integrated temperature sensors that enable dynamic adjustment of the fan speed to the ambient temperature.

Compact fans from ebm papst are able to ensure efficient cooling in confined spaces thanks to their sophisticated design and the use of advanced technologies. The combination of compact design, powerful motors, precise control and protective functions makes it an ideal solution for heat dissipation in a wide range of applications.

How are compact fans installed?

The installation of compact fans is an important step in ensuring efficient cooling and ventilation in electronic devices, computers, control cabinets and other applications. Correct installation not only ensures optimum fan performance, but also contributes to extending the service life of the cooled components. The basic steps and considerations for installing compact fans are described here.


The correct installation and maintenance of compact fans are crucial for efficient cooling and the longevity of electronic systems. By following the correct steps, you can ensure that your compact fans function optimally and thus guarantee smooth operation of your appliances.

Before starting the installation, it is important to understand the requirements of the specific application. These include:

Determining the cooling requirement: Determine the required air volume and the desired air flow direction in order to effectively reach the components to be cooled. Selecting the right fan: Choose a compact fan with the right specifications in terms of size, airflow, pressure and voltage. Checking the installation location: Ensure that there is sufficient space for the fan itself and for unhindered air circulation.

Mounting the fan

Mounting: Compact fans usually come with mounting holes or brackets that allow easy attachment to the housing or in the installation position. Use suitable screws or fastening elements, which are often provided by the manufacturer.

Alignment: Align the fan so that the air flow reaches the components to be cooled directly. Observe the inlet and outlet directions of the fan to ensure optimum air flow.

Electrical connection

Wiring: Connect the fan to the power source in accordance with the manufacturer's instructions. Observe the polarity and the required voltage.

Safety checks: Ensure that all electrical connections are made safely and in accordance with the applicable safety standards. If necessary, use cable ducts or protective devices to protect the cabling.

Commissioning and testing

Function test: Switch on the fan to check its function. Pay attention to unusual noises or vibrations that could indicate installation errors.

Airflow check: Ensure that the airflow effectively reaches the areas to be cooled and that there are no obstacles blocking the airflow.

Maintenance instructions

Regular cleaning: Keep the fan and surrounding area free of dust and dirt to maintain performance. Breuell & Hilgenfeldt GmbH offers suitable accessories such as filters.

Monitoring performance: Look for signs of decreasing performance or increased noise levels that could indicate the need for maintenance or replacement.

What are the advantages of compact fans?

Compact fans offer decisive advantages for efficient and effective cooling. Their small size, high efficiency, quiet operation, dynamic control options and durability make them an ideal solution for modern cooling challenges.

Efficient cooling in a small space

The most obvious advantage of compact fans is their ability to provide effective cooling in confined or limited spaces. They are specifically designed to maximise air circulation in compact electronic devices such as laptops, servers and telecommunications equipment where traditional cooling methods are impractical.

Low energy consumption

Modern compact fans are known for their low energy consumption. Many models utilise brushless DC motors (BLDC), which offer greater efficiency and a longer service life compared to traditional brushed motors. This helps to reduce operating costs and minimise the environmental impact.

Geräuscharmer Betrieb

Thanks to advanced design features and technologies, compact fans offer quiet operation, which is particularly important for environments where noise is a critical issue, such as offices or bedrooms. The noise reduction is achieved by optimising the fan blade geometry and using high-quality bearings.

Variable speed control

The ability to adjust the fan speed according to cooling requirements is another significant advantage. Technologies such as pulse width modulation (PWM) allow compact fans to react dynamically to temperature changes by increasing or decreasing the speed, which optimises cooling performance and saves energy at the same time.

Robustness and durability

Compact fans are known for their robustness and durability. Many models are protected against dust and water (e.g. in accordance with IP55 or IP67 protection classes), which makes them suitable for use in harsh environments. The use of high-quality materials and components ensures a long service life even under demanding conditions.

Simple integration

The compact design and installation flexibility allow compact fans to be easily integrated into various systems. They can be mounted in a variety of positions to meet specific airflow requirements, which simplifies the planning and implementation of cooling concepts.

Which compact fans are available?

Compact fans are available in a variety of designs and versions to meet different cooling and air circulation requirements. This variety enables use in a wide range of applications - from electronics cooling to ventilation in small rooms.

Axial fans

Axial fans move the air parallel to the axis of rotation of the fan. They are particularly effective in applications where a high air flow rate at low pressure is required.

The operating point of the axial fans from ebm Papst is at air flow rates between 1.8 m³/h and 2,565 m³/h and back pressures of 0 Pa to 1,500 Pa.

Centrifugal fans

Centrifugal fans, also known as centrifugal fans, draw in the air axially and deflect it radially at a 90-degree angle to the axis of rotation. These fans are ideal for applications that require high pressure at a moderate air flow rate, such as in compact dust extraction systems or in integrated cooling systems for electronic devices.

The operating point of the centrifugal fans from ebm Papst is at air flow rates between 20 m³/h and 1,600 m³/h and back pressures from 0 Pa to 5,200 Pa.

Diagonal fans

Diagonal fans combine the properties of axial and radial fans by moving air in both axial and radial directions. This results in higher pressure performance and efficiency in air movement, making them suitable for more demanding cooling and ventilation requirements.

The operating point of the diagonal fans from ebm Papst is at air flow rates between 200 m³/h and 1,100 m³/h and a back pressure of 0 Pa to 1,500 Pa.