Description
Delta AFB1548VH-CD8G (also known as AFB1548VHCD8G) is a high-performance 48VDC brushless axial cooling fan engineered in a slimline 172 mm × 150 mm × 25.4 mm (6.77 in × 5.91 in × 1.00 in) round-flanged form factor. Powered by a rugged brushless DC motor spinning at 5,000 RPM, it generates an impressive 305.04 CFM (518.3 m³/h) of airflow against high back pressures reaching 1.198 in H₂O (298.4 Pa) while consuming an average of 31.20 W. Built with a rugged die-cast aluminum frame, UL 94V-0 flame-retardant thermoplastic impeller, and a dual ball bearing system, this industrial unit provides long-term reliability backed by an L10 life expectancy of 70,000 hours at 40 °C. The assembly includes 300 mm UL 1061 AWG #22 lead wires providing precision 4-wire functionality with PWM variable speed input and an open-collector frequency generator (tachometer) output.
Key Features
- GR487 Salt Fog Defense: Robust environmental sealing engineered to withstand severe outdoor salt spray and corrosive atmospheres.
- Aerodynamic Airflow Delivery: Produces up to 305.04 CFM airflow and 1.198 in H₂O static pressure at 5,000 RPM.
- Precision 4-Wire Speed Control: Features 20 kHz PWM variable speed regulation alongside an open-collector tachometer frequency generator signal.
- Rugged Aluminum Construction: Rigid die-cast aluminum housing paired with dual ball bearings ensures high mechanical structural integrity.
- Comprehensive Electrical Protection: Integrates reverse polarity protection and motor winding locked rotor shutdown prevention against overcurrent thermal events.
Technical Specifications
| Manufacturer | Delta |
|---|---|
| Manufacturer Part Number (MPN) | AFB1548VH-CD8G |
| Alternate Part Number | AFB1548VHCD8G |
| Delta Safety Model Number | AFB1548VH-C |
| Product Series | AFB Series |
| Product Category | DC Axial Fans |
| Fan / Component Type | Tubeaxial Cooling Fan |
| Phase & Supply Type | DC Brushless |
| Rated Voltage | 48.0 VDC |
| Operating Voltage Range | 42.0 to 60.0 VDC |
| Rated Current | 0.65 A (Average) |
| Max. Current Draw | 0.90 A (Safety Label Current) |
| Power Rating | 31.20 W (Average) |
| Max. Input Power | 43.20 W |
| Speed (RPM) | 5000 RPM (±10%) |
| Airflow | 305.04 CFM (518.3 m³/h / 8.638 m³/min) |
| Min. Airflow (Limited Spec) | 274.54 CFM (466.4 m³/h / 7.774 m³/min) |
| Static Pressure | 1.198 in H₂O (298.4 Pa / 30.426 mmH₂O) |
| Min. Static Pressure (Limited Spec) | 0.970 in H₂O (241.7 Pa / 24.645 mmH₂O) |
| Noise Level | 65.0 dB(A) (Average, 69.0 dB(A) Max) |
| Dimensions (L × H × D) | 172.0 mm × 150.0 mm × 25.4 mm (6.77 in × 5.91 in × 1.00 in) |
| Mounting Hole Pitch | 162.0 mm (6.378 in) |
| Mounting Hole Diameter | 8× Ø4.3 mm (Ø0.169 in) |
| Housing Material | Die-Cast Aluminum |
| Impeller Material | Thermoplastic (UL 94V-0) |
| Bearing Type | Two Ball Bearings |
| Direction of Rotation | Counter-Clockwise (viewed from nameplate side) |
| Weight | 0.470 kg (1.036 lbs / 470 g) |
| Rotor Weight | 0.129 kg (0.284 lbs / 129 g) |
| Termination & Cable Specs | 4 Wire Leads, UL 1061 AWG #22, Length: 300 mm (11.81 in) |
| Wiring Pinout / Connection | Red: (+), Black: (-), Blue: (FG / Tachometer), Yellow: (PWM) |
| Control / Signal Features | PWM Speed Control (10–30 kHz, 0–10 VDC) & Speed Sensor (Tachometer / FG 2 pulses/rev) |
| Motor Protection | Locked Rotor Protection (Electronic Current Shutdown) & Reverse Polarity Protection |
| Environmental Class | GR487 Salt Fog Protection |
| Insulation Class | UL: Class A |
| Insulation Resistance | 10 MΩ minimum at 500 VDC (between frame and lead wires) |
| Dielectric Strength | 5 mA maximum at 500 VAC, 50/60 Hz for 1 minute (between frame and lead wires) |
| Operating Temperature | -40 °C to +70 °C (-40 °F to +158 °F) |
| Storage Temperature | -40 °C to +85 °C (-40 °F to +185 °F) |
| Operating Humidity | 5% to 90% RH |
| Storage Humidity | 5% to 95% RH |
| Service Life (L10) | 70,000 Hours at 40 °C (15% to 65% RH) |
| Standards & Compliance | cURus, VDE, CE, GR487, RoHS Compliant |
Applications
Delta AFB1548VH-CD8G axial fans are primarily integrated into outdoor telecom base stations, harsh-environment cellular node enclosures, and marine radio access cabinets requiring GR487-rated salt fog resistance. They provide critical active thermal exhaust across industrial battery energy storage systems (BESS), solar power inverters, and high-capacity uninterruptible power supply (UPS) rectifiers. The fan is also widely utilized for forced-air cooling in variable frequency drive (VFD) assemblies, automation control panels, and high-density telecom power racks.
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