Description
The Delta PFB1224HE-00P0 (also known as PFB1224HE00P0) is a high-static-pressure 24 VDC brushless axial cooling fan engineered in a standard 120 x 120 x 38 mm (4.72 x 4.72 x 1.50 in) form factor. Delivering up to 201.41 CFM (342.2 m³/h) of airflow and an impressive maximum static pressure of 1.480 in H₂O (368.7 Pa) at 5800 RPM, this unit overcomes heavy system impedance in densely packed enclosures. The fan features a rugged UL 94V-0 flame-retardant plastic housing and impeller supported by precision dual ball bearings rated for 70,000 hours of continuous operation at 40°C. Factory-equipped with a 4-wire UL1007 AWG#24 harness, it provides integrated open-collector frequency generator (tachometer) feedback, 20 kHz PWM variable speed control with zero-RPM shutoff, electronic reverse polarity protection, and 96-hour locked-rotor auto-restart safeguard.
Key Features
- Extreme Static Pressure: Generates up to 1.480 in H₂O static head to overcome restrictive heat exchangers and filters.
- Intelligent PWM Control: Supports 20 kHz duty cycle regulation with dead-stop zero-RPM capability and 30 percent start threshold.
- Dual Ball Bearings: Heavy-duty dual ball bearing system ensures 70,000 hours L10 service life across demanding duty cycles.
- Active Signal Feedback: Factory-integrated 8-pole open collector tachometer wire provides accurate real-time motor speed monitoring.
- Comprehensive Circuit Safety: Engineered with reverse polarity protection and automatic locked-rotor current shutdown preventing thermal failure.
Technical Specifications
| Manufacturer | Delta |
|---|---|
| Manufacturer Part Number (MPN) | PFB1224HE-00P0 |
| Alternate Part Number | PFB1224HE00P0 |
| Delta Safety Model Number | PFB1224HE-00 |
| Product Series | PFB Series |
| Product Category | DC Axial Fans |
| Fan / Component Type | Tubeaxial Brushless Cooling Fan |
| Supply Type | Direct Current (DC) |
| Rated Voltage | 24 VDC |
| Operating Voltage Range | 14.0 to 27.6 VDC |
| Rated Input Current (Average) | 1.00 A |
| Max. Current Draw | 1.33 A |
| Safety Label Current | 2.00 A |
| Standby Current (0% PWM) | 0.02 A (Max. 0.03 A) |
| Rated Input Power (Average) | 24.00 W |
| Max. Input Power | 31.92 W |
| Rated Speed | 5800 RPM (± 10%) |
| Max. Airflow | 201.411 CFM (5.704 m³/min / 342.2 m³/h) |
| Min. Airflow (At Zero Static) | 181.144 CFM (5.130 m³/min / 307.8 m³/h) |
| Max. Static Pressure | 1.480 in H₂O (37.594 mmH₂O / 368.7 Pa) |
| Min. Static Pressure (At Zero Airflow) | 1.199 in H₂O (30.448 mmH₂O / 298.6 Pa) |
| Acoustical Noise Level | 65.0 dB(A) (Max. 69.0 dB(A)) |
| Dimensions (L × H × D) | 120.0 × 120.0 × 38.0 mm (4.724 × 4.724 × 1.496 in) |
| Mounting Hole Pitch | 105.0 ± 0.3 mm (4.134 in) |
| Mounting Hole Diameter | 8 × Ø 4.30 ± 0.15 mm (8 × Ø 0.169 in) |
| Housing Material | Thermoplastic (UL 94V-0) |
| Impeller Material | Thermoplastic (UL 94V-0) |
| Bearing Type | Two Ball Bearings |
| Direction of Rotation | Clockwise (viewed from nameplate/label side) |
| Airflow Direction | Struts / Label Discharge |
| Weight | 380 g (0.838 lbs) |
| Termination & Cable Specs | 4 Wire Leads, UL 1007 AWG #24, Length 330.0 ± 10.0 mm (12.99 in), Stripped 10.0 mm (0.39 in) |
| Wiring Pinout / Connection | Red: (+) Positive | Black: (-) Negative | Blue: Frequency Generator (F00) | Yellow: PWM Control |
| Speed Control Signal | Pulse Width Modulation (PWM), 0 to 15 VDC (20 kHz Recommended) |
| PWM Start-Up Duty Cycle | Min. 30% at 25°C, 24.0 VDC |
| PWM Speed Range | 0% Duty: 0 RPM (Stopped) | 100% Duty: 5800 RPM |
| Speed Sensor / Tachometer Output | Frequency Generator (FG), Open Collector, 8 Poles, Max. 5 mA, Vce Max. 0.5 V |
| Motor Protection | Electronic Locked Rotor Protection (Current Shutdown, 96-hr No Fire) & Reverse Polarity Protection |
| Insulation Class | UL Class A |
| Insulation Resistance | Min. 10 MΩ at 500 VDC (between frame and positive terminal) |
| Dielectric Strength | 5 mA Max. at 500 VAC, 50/60 Hz for 1 Minute (between frame and positive terminal) |
| Operating Temperature | -10°C to +70°C (14°F to 158°F) |
| Storage Temperature | -40°C to +75°C (-40°F to 167°F) |
| Operating Humidity | 5% to 90% RH |
| Storage Humidity | 5% to 95% RH |
| Service Life (L10) | 70,000 Hours Continuous at 40°C (15% to 65% RH) |
| Environmental & Safety Compliance | RoHS Compliant, CE, cURus, TUV |
Applications
The Delta PFB1224HE-00P0 tubeaxial cooling fan is designed for forced-air thermal management in high-density industrial control cabinets, variable frequency drives (VFDs), and telecommunications rectifiers. Its exceptional static pressure makes it ideal for ducted computer server racks, high-power DC-to-DC converters, and automated manufacturing robotics controllers requiring focused airflow through restrictive heat sinks. It also serves as a critical MRO replacement component across welding inverters, industrial battery chargers, and uninterruptible power supply (UPS) enclosures.
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