FD3G146-48GL-92 Dual Inlet Centrifugal Blower, 48VDC, 146mm, 1220.6 m3/h

This dual inlet centrifugal blower, the FD3G146-48GL-92, redefines quiet operation for space-constrained telecom and data center environments, generating a mere 63 dB(A) at full throttle—quieter than a typical office conversation. Engineered around a 48VDC brushless DC motor (BLDCDC92), it supports a wide 36~57V input range, aligning perfectly with standard -48VDC telecom power plants and battery backup systems. Despite its compact 146 mm galvanized steel impeller, this unit delivers a powerful maximum airflow of 718.3 CFM (1220.6 m3/h) and a static pressure of 2.18 In.wg (544 Pa), ensuring reliable cooling through dense server racks. The die-cast aluminum housing and galvanized steel impeller provide exceptional industrial durability, resisting corrosion and wear in continuous-duty applications. With a low power draw of just 110.4 W at 1350 RPM, it offers significant energy savings compared to AC counterparts, reducing heat load and operational costs. The blower features a 20AWG cable (209 mm), PWM speed control for precise thermal management, and a protection rating suitable for indoor telecom cabinets. Backed by FANOVA's OEM manufacturing expertise, this model is ideal for telecom enclosures, medical equipment, and office ventilation systems where noise is critical. Choose this 48V blower for a compact, efficient, and whisper-quiet cooling solution that integrates seamlessly into DCIM-monitored infrastructure.

The FD3G146-48GL-92 is a precision-engineered dual inlet centrifugal blower that prioritizes acoustic comfort and DC power efficiency, specifically designed for 48VDC telecom and electronic cooling systems. Its dual inlet configuration draws air from both sides, maximizing volumetric flow within a compact footprint, while the 146 mm diameter impeller, constructed from galvanized steel sheet, ensures robust structural integrity and resistance to corrosion, making it suitable for demanding continuous operation. The impeller's backward-curved blades are optimized for high-efficiency air movement, achieving a maximum airflow of 1220.6 m3/h (718.3 CFM) and a maximum static pressure of 544 Pa (2.18 In.wg) at the rated speed of 1350 RPM. This performance is delivered by the integrated brushless DC motor (BLDCDC92), which features a rotor diameter of 92 mm and operates on a nominal 48VDC supply with a wide input range of 36 to 57VDC, accommodating fluctuations in telecom power buses. The motor draws a rated current of 2.3A and consumes 110.4W, ensuring high electrical-to-mechanical conversion efficiency and minimizing heat dissipation within the equipment enclosure. For speed control, the blower supports PWM (pulse width modulation) and 0-10V analog interfaces, allowing seamless integration with system controllers for demand-based ventilation and thermal management. The motor's electronic commutation eliminates brush wear, extending operational life, while the precision ball bearings are rated for a service life exceeding 50,000 hours at rated conditions. The housing is made of die-cast aluminum alloy, providing excellent dimensional stability and heat dissipation, and the unit is designed for easy installation with pre-wired 20AWG leads (209 mm length) for simple connection. The blower is protected against overcurrent, overvoltage, and over-temperature conditions, and its insulation system meets Class B requirements. While not rated for outdoor exposure, its construction supports use in clean, dry environments such as telecom shelters, server rooms, and medical equipment. FANOVA's manufacturing processes adhere to ISO 9001 quality standards, and the unit is RoHS compliant, ensuring environmental safety and reliability for original equipment manufacturers seeking a high-performance, low-noise air-moving solution for 48VDC applications.

DC Dual Inlet Centrifugal Blower
Type	FD3G146-48GL-92
Model	BLDCDC92

Ⅰ.When taking out the fan, do not directly lift the fan lead wire. If the lead wire is excessively stressed, the internal welding part may fall off

Ⅱ.Do not plug or unplug the fan lead plug when the fan is running

Ⅲ.If the fan does not work after starting, do not touch the impeller, rotor, or other parts, professional technical personnel are required to inspect the fan to prevent sudden start of the fan from causing hand or other personal injury

Ⅳ.The power line and control line of the fan cannot be connected in reverse, otherwise it will burn out

Ⅴ.Because of the soft start characteristics of the fan, to prevent personal injury, do not touch the impeller or other parts of the fan during powered on or running at low speeds

Ⅵ.The fan needs to be operated and used under the guidance of professional personnel to prevent children from coming into touch this product

Ⅶ.If the power line is worn or damaged, it needs to be returned to the manufacturer for repair or be replaced under the guidance of the manufacturer

Ⅷ.As a part of the fan, it is not recommended to use the motor alone when there is no impeller or loading

1. High Efficiency: The FD3G146-48GL-92 delivers 1220.6 m3/h at 544 Pa while drawing only 110.4W, achieving 30-40% energy savings over equivalent AC fans through FANOVA's BLDC motor technology.

2. Industrial-Grade Impeller: The 146mm galvanized steel sheet impeller resists corrosion, wear and high temperatures, making the fan suitable for harsh industrial environments and corrosive gas streams.

3. Wide Application Range: Suitable for industrial ventilation, dust extraction, HVAC units, agricultural ventilation and new-energy equipment, offering flexible customized solutions (OEM/ODM).

4. Sustainable Development: Low-voltage DC operation enables direct solar and battery integration; recyclable steel impeller and optimized BLDC drive meet eco-friendly requirements with long-term reliability.

5. Easy Installation and Maintenance: Compact 146mm footprint, 0-10VDC/PWM speed control, FG tach output and standard cable make the fan simple to wire, control and service.

Q1:What kind of payments do you support?

A1: For sample order, 100% payment in advance; For batch order, 30% in advance and 70% will be paid before shipping

Q2.Will you provide samples?

A2: Sample is available and can be delivered within 10days

Q3:How can I choose a more suitable model?

A3: We need the information like fan type, quantity, size, material, voltage, air flow and static pressure.

Q4:How can I place the order?

A4:  Usually quote you within 24 hours  after  we get your inquiry. First sign the PI,pay deposit,then we will arrange the production.After finished production need you pay balance. Finally we will ship the Goods.

Q5:About transportation

A5: All available shipping ways could be applied, express shipping, air or sea. Appointed shipping company or our own forwarders all could be used in shipment. Full-way tracking the cargos for you before the goods arrive. 

Q6:How long is the warranty period?

A6: We currently offer 3-year quality guarantee for our own products, and in response to current product problems, our company provides line support, and some customers have been able to improve their products.