Description
The Delta THD2348MU-00P8 (also known as THD2348MU00P8) is a high-static-pressure round brushless tubeaxial cooling fan measuring Ø225 mm × 100 mm (8.86 in diameter × 3.94 in depth). Operating on an expansive 48 VDC bus (36.0 to 60.0 VDC), this industrial thermal unit produces an immense airflow rating of 915.00 CFM (1554.6 m³/h) and static back pressure up to 2.291 in H₂O (570.6 Pa) at 5000 RPM. Constructed with a die-cast aluminum frame, UL 94V-0 flame-retardant plastic impeller, and dual precision ball bearings, the unit incorporates fully resin-potted windings and PCB assembly certified to IP68 ingress protection. Advanced digital integration is provided via four UL2517 AWG#20 flying leads supporting high-frequency PWM speed control and an open-collector frequency generator (FG) tachometer circuit.
Key Features
- High-Output Aerodynamics: Generates up to 915.00 CFM airflow and 2.291 in H₂O back pressure for dense system impedance.
- IP68 Ingress Protection: Fully resin-potted stator windings and PCB assembly ensure harsh-environment resistance to moisture and dust.
- Precision Motor Drive: Dual ball bearing system delivers 70,000 hours continuous service life under 40 °C operation.
- Integrated Speed Control: Four-wire interface accepts wide-frequency PWM input signals from 600 Hz up to 30 kHz.
- Intelligent System Monitoring: Open-collector tachometer speed sensor outputs two discrete frequency generator pulses per revolution.
Technical Specifications
| Manufacturer | Delta |
|---|---|
| Manufacturer Part Number (MPN) | THD2348MU-00P8 |
| Alternate Part Number | THD2348MU00P8 |
| Delta Safety Model Number | THD2348MU-00 |
| Product Series | THD Series |
| Product Category | DC Axial Fans |
| Fan / Component Type | Brushless DC Tubeaxial Fan |
| Phase & Supply Type | DC Brushless |
| Rated Voltage | 48.0 VDC |
| Operating Voltage Range | 36.0 to 60.0 VDC |
| Speed (RPM) | 5000 RPM (+400 / -250 RPM) |
| Rated Input Power (Average) | 180.0 W |
| Max. Input Power | 230.00 W |
| Rated Current (Average) | 3.75 A |
| Max. Current Draw | 4.79 A |
| Safety Current on Label | 5.88 A |
| Airflow | 915.00 CFM (1554.6 m³/h / 25.909 m³/min) |
| Min. Airflow at Zero Static Pressure | 823.5 CFM (1399.1 m³/h / 23.319 m³/min) |
| Static Pressure | 2.291 in H₂O (570.6 Pa / 58.20 mmH₂O) |
| Min. Static Pressure at Zero Airflow | 1.856 in H₂O (462.3 Pa / 47.142 mmH₂O) |
| Noise Level (Average) | 70.0 dB(A) |
| Max. Acoustical Noise | 74.0 dB(A) |
| Airflow Direction | Axial (Intake over Struts / Nameplate) |
| Direction of Rotation | Clockwise (viewed from nameplate side) |
| Frame Dimensions | Ø225 mm × 100.0 mm (Ø8.86 in × 3.94 in) |
| Housing Material | Die-Cast Aluminum |
| Impeller Material | Plastic (Black, UL 94V-0) |
| Bearing Type | Dual Ball Bearings |
| Motor Poles | 4 Poles |
| Rotor Weight | 530 g (1.17 lbs) |
| Total Weight | 1600 g (1.60 kg / 3.53 lbs) |
| Termination & Cable Specs | 4 Lead Wires, UL 2517 AWG #20 |
| Wiring Pinout / Connection | Pin 1: Red (+), Pin 2: Yellow (PWM), Pin 3: Blue (FG Tach), Pin 4: Black (-) |
| Speed Control Function | PWM Control (600 Hz to 30 kHz, 1 kHz nominal; 0% stop, 100% full speed) |
| Tachometer / Sensor Signal | Frequency Generator (FG) Open Collector (2 pulses/rev, VFG max 60V, Ic max 10mA) |
| Motor Protection | Locked Rotor Current Shutdown & Reverse Polarity Protection (96h fire impedance) |
| Ingress Protection (IP) | IP68 (IEC 60529 Resin Potting & Encapsulation) |
| Insulation Class | UL Class A |
| Insulation Resistance | 10 MΩ min. 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 Range | -25 °C to +70 °C (-13 °F to +158 °F) |
| Storage Temperature Range | -40 °C to +75 °C (-40 °F to +167 °F) |
| Operating Humidity Range | 5% to 90% RH (5% to 95% RH at 40 °C) |
| Storage Humidity Range | 5% to 95% RH |
| Service Life (L10) | 70,000 Hours continuous operation at 40 °C (15% to 65% RH) |
| Standards & Compliance | cURus, TUV, CE, RoHS Compliant |
Applications
The Delta THD2348MU-00P8 tubeaxial fan is engineered for thermal dissipation across heavy-duty industrial machinery, telecom base stations, and high-density power conversion systems. It serves as an essential forced-air cooling component in outdoor harsh-environment telecommunications enclosures, commercial solar inverter cabinets, and grid-scale energy storage system (ESS) power racks. In factory automation and heavy machinery, maintenance teams integrate this unit into variable frequency drive (VFD) enclosures, robotic welding power supplies, and uninterruptible power supply (UPS) banks requiring ingress-sealed air movement.
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