Description
The ebmpapst 624/2HH is a high-performance 24V DC Axial Fan featuring a 5-blade plastic impeller and a robust Brushless DC Motor design. Operating within a voltage range of 18-28 VDC, this unit is optimized for energy efficiency, consuming 2.9 W with a nominal current of 0.12 A. It delivers a powerful airflow of 56 m³/h (33.0 CFM) and a static pressure of 145 Pa (0.58 inAq) at a rated speed of 8200 RPM. The fan is housed in a compact 60.0 x 60.0 x 25.0 mm plastic frame, weighing 0.070 kg, and is suitable for any mounting position. Engineered for long-term reliability, it offers a service life (L10) of 65,000 hours at 40 °C, and up to 110,000 hours according to IPC 9591 standards. With a 3-wire configuration including a speed signal and multiple international approvals (CE, EAC, UL, VDE, CSA), the 624/2HH is a premier thermal management solution for high-density electronic enclosures and industrial control systems.
624/2HH Fan Parameters
Manufacturer: ebmpapst
Model Number: 624/2HH
Motor Design: Brushless DC Motor
Type: DC Axial Fan
Nominal Voltage: 24 VDC
Voltage Range: 18-28 VDC
Dimensions: 60.0 x 60.0 x 25.0 mm
Impeller Size: 60 mm
Number of Blades: 5
Mass: 0.070 kg
[Electrical Data]
Nominal Speed: 8200 RPM
Power Consumption: 2.9 W
Current Draw: 0.12 A
Termination: 3 Lead wires (Length 310 mm ± 10 mm)
Motor Bearing: Ball bearing
Motor Protection: Electronic protection against reverse polarity and blocked rotor
[Performance & Acoustics]
Air Flow: 56 m³/h (33.0 CFM)
Max. Static Pressure: 145 Pa (0.58 inAq)
Noise: 43 dB(A)
Rotational Direction: Clockwise (looking at rotor)
Airflow Direction: Air outlet over struts
[Materials & Construction]
Housing Material: Plastic
Impeller Material: Plastic
Mounting Position: Any (Shaft)
Max. Mounting Torque:
– Wire outlet corner: 10 Ncm
– Remaining corners: 20 Ncm
Screw Size: ISO 4762 – M3 (degreased)
[Reliability & Protection]
Service Life (L10 at 40 °C): 65000 h
Service Life (L10 at TU max): 32500 h
Service Life (IPC 9591 at 40 °C): 110000 h
Min. Ambient Temperature (TU min): -20 °C
Max. Ambient Temperature (TU max): 70 °C
Min. Storage Temperature (TL min): -40 °C
Max. Storage Temperature (TL max): 80 °C
Approval: CE, EAC, UL, VDE, CSA
[Application]
The ebmpapst 624/2HH is specifically engineered for high-performance cooling in space-constrained 24V DC environments. Its high rotational speed of 8200 RPM and 145 Pa (0.58 inAq) static pressure make it ideal for forcing air through dense heat sinks in 1U server racks, telecommunications modules, and industrial frequency inverters. The exceptionally long service life—validated up to 110,000 hours—ensures maintenance-free operation in mission-critical hardware. With a low 2.9 W power profile and 3-wire speed monitoring, it provides a reliable and energy-efficient solution for medical imaging equipment and automated laboratory instruments where precise thermal regulation and high-speed feedback are required.







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