Description
The ebm-papst 624HH is an industrial-grade, high-performance DC tubeaxial compact fan engineered in a standard 60 x 60 x 25 mm (2.36 x 2.36 x 1.00 in) form factor for dense thermal management assemblies. Operating on a nominal 24 VDC bus with an 18 to 28 VDC operating range, the unit delivers a potent 33.0 CFM (56 m³/h) of airflow at a rated speed of 8200 RPM while drawing only 3.6 W of power. Constructed with rugged glass-fiber reinforced PBT housing and PA plastic impellers, the fan utilizes precision dual ball bearings to ensure high operational reliability across continuous-duty cycles. Factory connection is established via robust AWG 22 TR 64 stripped and tin-plated wire leads, backed by integrated electronic locked-rotor and reverse polarity protection.
Key Features
- High-Density Aerodynamic Performance: Produces up to 33.0 CFM of forced-air convection at 8200 RPM for compact, high-heat electronic enclosures.
- Industrial Ball Bearing System: Heavy-duty precision ball bearings deliver an extended L10 operational lifespan of 65,000 hours at 40 °C.
- Fiberglass-Reinforced Materials: Rugged glass-fiber reinforced PBT housing and PA impeller withstand thermal stresses and demanding mechanical environments.
- Integrated Circuit Protection: Features comprehensive electronic locked-rotor and reverse polarity protection mechanisms to safeguard internal driver electronics.
- Compact Standard Form Factor: Slim 60 mm square profile with 25 mm depth enables seamless drop-in integration into space-constrained housings.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | 624HH |
| Product Series | 620 |
| Product Category | DC Axial Fans |
| Fan / Component Type | DC Axial Compact Fan (Tubeaxial) |
| Supply Type | DC |
| Rated Voltage | 24 VDC |
| Operating Voltage Range | 18.0 to 28.0 VDC |
| Speed (RPM) | 8200 RPM |
| Power Consumption | 3.6 W |
| Airflow | 33.0 CFM (56.0 m³/h) |
| Noise Level | 43.0 dB(A) |
| Sound Power Level | 5.6 Bel |
| Airflow Direction | Exhaust over struts |
| Dimensions (L × H × D) | 60 x 60 x 25.4 mm (2.36 x 2.36 x 1.00 in) |
| Housing Material | Glass-fiber reinforced PBT plastic |
| Impeller Material | Glass-fiber reinforced PA plastic |
| Bearing Type | Dual Ball Bearing |
| Direction of Rotation | Clockwise, viewed toward rotor |
| Weight | 0.085 kg (0.187 lbs) |
| Termination & Cable Specs | 2 Wire Leads, AWG 22, TR 64, stripped and tin-plated |
| Motor Protection | Electronic locked-rotor, overload, and reverse polarity protection |
| Operating Temperature | -20 to +70 °C (-4 to +158 °F) |
| Service Life (L10) | 65,000 h at 40 °C / 32,500 h at 70 °C |
| Standards & Compliance | CE, CSA, UL, VDE, RoHS3 Compliant |
Applications
The ebm-papst 624HH DC axial fan is engineered for intensive forced-air cooling in telecommunications power supplies, optical transceivers, and embedded computing systems. Its compact square footprint and high static pressure capabilities make it ideal for cooling high-density multi-channel industrial controllers, laboratory diagnostic analyzers, and network router switchgear. System integrators and MRO engineers also deploy this unit in robotics motion drives, inverter power modules, and compact automation cabinets where reliable thermal extraction is critical.
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