Description
ebm-papst 6318H is a premium 48VDC brushless DC tubeaxial cooling fan engineered in a round Ø172 × 51.0 mm (6.77 × 2.01 in) form factor with robust metal housing and fiberglass-reinforced plastic impeller. Delivering up to 320.8 CFM (545.0 m³/h) of airflow and an impressive maximum static pressure of 1.646 in H₂O (410 Pa) at 5,000 RPM, this fan provides superior thermal dissipation for high-density electronic enclosures. Operating across a wide 36 to 72 VDC input envelope, it integrates dual precision ball bearings, counterclockwise rotation with exhaust over struts, and comprehensive internal protection including reverse polarity diodes and locked-rotor auto-restart. Electrical connection is provided via 365 mm (14.4 in) AWG 22 lead wires, making it a reliable solution for continuous S1 duty in demanding telecommunications and industrial power infrastructure.
Key Features
- High-Pressure Airflow: Delivers 320.8 CFM (545.0 m³/h) and 410 Pa static pressure for dense thermal resistance.
- Wide DC Voltage: Supports input supplies from 36 to 72 VDC with nominal 48 VDC power regulation.
- Heavy-Duty Metal Housing: Rugged die-cast metal frame paired with reinforced plastic impeller ensures extended structural endurance.
- Locked-Rotor Protection: Automated restart circuitry with 0.5s run and 10.0s rest cycles prevents motor burn-out.
- Precision Dual Ball Bearings: Maintenance-free bearing assembly enables 77,500 operating hours at 40°C in any mounting orientation.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | 6318H |
| Product Series | 6300H |
| Product Category | DC Axial Fans |
| Fan / Component Type | Brushless DC Tubeaxial Fan |
| Phase & Supply Type | DC (Direct Current) |
| Rated Voltage | 48 VDC |
| Operating Voltage Range | 36.0 to 72.0 VDC |
| Speed (RPM) | 5,000 RPM (at 48 VDC & 72 VDC) / 4,200 RPM (at 36 VDC) |
| Power Rating | 32.0 W (at 48 VDC) / 18.0 W (at 36 VDC) / 31.0 W (at 72 VDC) |
| Rated Current | 670 mA (at 48 VDC) / 510 mA (at 36 VDC) / 430 mA (at 72 VDC) |
| Starting Current Consumption | ≤ 1,350 mA |
| Airflow | 320.8 CFM (545.0 m³/h) |
| Optimal Operating Airflow | 264.9 CFM (450.0 m³/h) @ 117 Pa |
| Static Pressure (Max.) | 1.646 in H₂O (410 Pa) |
| Noise Level | 58.0 dB(A) (Sound Pressure) / 6.9 Bel(A) (Sound Power) |
| Airflow Direction | Air outlet over struts |
| Direction of Rotation | Counterclockwise (looking at rotor) |
| Dimensions (Diameter × Depth) | Ø172 × 51.0 mm (Ø6.77 × 2.01 in) |
| Housing Material | Die-cast Metal |
| Impeller Material | Fiberglass-Reinforced Plastic (PA) |
| Bearing Type | Precision Ball Bearings |
| Installation Position | Any (horizontal or vertical shaft) |
| Weight | 0.910 kg (2.01 lbs) |
| Mounting Torque (Max.) | 600 N·cm (ISO 4762 – M4 degreased, without washer) |
| Termination & Cable Specs | 2 Lead Wires, AWG 22, Length: 365 mm ± 10 mm (14.37 in), Tube Length: 10 mm ± 2 mm |
| Wiring Pinout / Connection | Red Wire = +UB (+48 VDC), Blue Wire = -GND |
| Motor Protection | Locked Rotor Protection with Auto Restart (t3/t4: 0.5 s / 10.0 s) |
| Reverse Polarity Protection | Rectifying Diode (Max. residual current IF ≤ 5 mA) |
| Insulation Resistance | RI > 10 MΩ (at 500 VDC for 1 min) |
| Dielectric Strength | 1,000 VAC for 1 min (Type Test) / 1,700 VDC for 1 s (Routine Test) |
| Clearance & Creepage Distance | 1.0 mm / 1.5 mm |
| Electrical Protection Class | Class I (IEC 60664-1 Pollution Degree 1) |
| Operating Temperature | -20 to +65 °C (-4 to +149 °F) |
| Storage Temperature | -40 to +80 °C (-40 to +176 °F) |
| Climatic Requirements | Humid heat constant acc. to DIN EN 60068-2-78 (14 days) |
| Service Life (L10) | 77,500 h at 40 °C / 42,500 h at 65 °C (130,000 h IPC 9591 at 40 °C) |
| Standards & Compliance | CE, EAC, UL507, CSA C22.2 No. 113, VDE (EN 60950), CCC (GB 12350), RoHS3 |
Applications
ebm-papst 6318H axial fans are widely deployed across high-availability telecommunications base stations, cellular radio access networks, and central office DC power rectifiers. They are frequently integrated into modular uninterruptible power supplies (UPS), commercial solar inverters, and high-capacity battery energy storage systems (BESS). Additionally, maintenance technicians rely on this platform for direct drop-in thermal replacement in high-power industrial motor drives, automated factory welding equipment, and dense server rack chassis.
Reviews
There are no reviews yet.