THA1248BE-D Delta DC Brushless fan

Description

Delta Electronics THA1248BE-D represents Original Engineering for critical thermal management across high-density industrial and telecommunications infrastructure. Built upon a 120 x 120 x 38 mm standard framework, this high-pressure 48 VDC brushless fan provides dynamic closed-loop cooling through a precision 4-wire interface supporting Pulse Width Modulation (PWM) speed regulation and tachometer signal feedback. Designed for applications where air impedance is severe, the THA series features aerodynamically optimized impellers and dual ball bearings engineered to operate reliably under extreme duty cycles.

TECHNICAL SPECIFICATIONS
Manufacturer: Delta Electronics
Part Number: THA1248BE-D
Frame Dimensions: 120 x 120 x 38 mm
Rated Voltage: 48 VDC
Operating Voltage Range: 36.0 VDC to 60.0 VDC
Rated Current: 2.50 A
Rated Input Power: 120.0 W
Nominal Speed: 7500 RPM
Maximum Airflow: 290.5 CFM (8.23 m³/min)
Maximum Static Pressure: 2.45 inH2O (610 Pa)
Bearing Architecture: Dual High-Precision Ball Bearings
Acoustic Noise Level: 68.5 dBA
Control Interface: 4-Wire Leads (VDC, GND, Tachometer/Frequency Generator, PWM Input)
Motor Protection: Locked Rotor Protection, Polarity Protection, Auto-Restart Circuitry
Insulation Class: Class A (UL)
Frame Construction: Thermoplastic PBT (UL 94V-0)
Impeller Construction: Reinforced Thermoplastic PBT (UL 94V-0)
Operating Temperature Range: -10 °C to +70 °C
Storage Temperature Range: -40 °C to +75 °C
Life Expectancy (L10): 70,000 Hours at 40 °C
Weight: 490 g
Compliance: RoHS, CE, UL, TUV

TECHNICAL COMPATIBILITY AND INTEGRATION
Technical Compatibility is optimized for high-resistance air routing in 48 VDC enterprise environments, including:
– 1U/2U/3U high-density server chassis and storage arrays
– Telecom optical transport nodes, base transceiver stations (BTS), and power distribution cabinets
– High-power central inverters, uninterruptible power supplies (UPS), and rectifiers
– Industrial variable frequency drives (VFD) and power semiconductor enclosures

The 4-wire pinout integrates seamlessly with industry-standard BMCs and programmable logic controllers. The tachometer open-collector output permits continuous RPM surveillance for predictive failure analysis, while the high-frequency PWM logic allows dynamic thermal adjustment to minimize energy consumption and acoustic footprint during lower thermal loads.

INDUSTRIAL APPLICATION CONTEXT
In modern telecommunications enclosures and dense server compute racks, heat dissipation is continually restricted by cramped PCB layouts, heatsink fins, and air filters. Standard cooling fans suffer severe CFM degradation when facing such elevated backpressures. The THA1248BE-D overcomes this restriction by delivering up to 610 Pa of static pressure, forcing linear airflow through tightly grouped power modules to prevent thermal throttling, component degradation, and unscheduled system shutdowns.

COMMERCIAL AND SUPPLY ASSURANCE
All units are factory-original, brand-new stock retaining pristine factory integrity, electrical performance curves, and structural durability. Ready for mission-critical installations with competitive Lead Time schedules for immediate integration into maintenance schedules, equipment overhauls, or active manufacturing lines.