EN
FB3G250-110GL-20
| Nominal Voltage | VDC | 110 |
| Current draw | A | 3.0±10% |
| Speed(RPM) | min-1 | 3600±5% |
| Power consumption | W | 330±10% |
| Max. Air Flow | m3/h | 2389 |
| Max. Static Pressure | Pa | 1024 |
50pcs
The FB3G250-110GL-20 is a 110VDC high-performance DC backward centrifugal fan that delivers the highest airflow in the entire 250mm FANOVA series — an exceptional 2389 m³/h at 1024 Pa static pressure. Powered by the BLDC102 brushless motor outputting 330W at 3600 RPM, this fan is engineered for high-voltage DC bus systems commonly found in renewable energy storage, industrial DC microgrids, and electric vehicle charging infrastructure. Drawing just 3.0A across a wide 60-143 VDC input range, it achieves extraordinary air-moving capability while maintaining energy efficiency. Critically, this model features IP55-rated ingress protection — a significant upgrade over the standard IP44 — providing dust-protected and water-jet-resistant operation for harsh industrial and outdoor environments. The integrated FG tach output enables precision closed-loop speed control, compatible with 0-10VDC analog and PWM digital signals for seamless automation integration. With Class B insulation rated to 130°C and a 50,000-hour L10 service life, this fan is built for continuous-duty operation in the most demanding high-voltage DC applications. Ideal for renewable energy storage container ventilation, EV charging station cooling, industrial DC microgrid equipment cooling, outdoor telecom shelter pressurization, and harsh-environment HVAC systems. CE and RoHS certified.
At the core of the FB3G250-110GL-20 is the BLDC102 external rotor brushless DC motor — a 330W high-output platform — driving a backward curved centrifugal impeller with a 250mm diameter, optimized for maximum airflow generation at 3600 RPM. The aerodynamic design achieves 75-80% efficiency, converting 330W of 110VDC power into 2389 m³/h at an impressive 1024 Pa — the highest airflow and one of the highest pressure ratings in the 250mm series. The motor's low 3.0A current draw across a wide 60-143 VDC range ensures compatibility with 110VDC nominal systems commonly found in industrial DC bus architectures, renewable energy storage, and EV charging infrastructure. Its comprehensive control interface accepts 0-10VDC analog signals and PWM (1-10kHz) digital inputs for stepless speed regulation, while the FG tachometer output delivers real-time RPM feedback for closed-loop integration with PLCs and building automation platforms. A defining feature of this model is its IP55-rated protection — dust-protected against harmful deposits and resistant to water jets from any direction — making it suitable for outdoor installation and wash-down environments where standard IP44 fans would be inadequate. Built-in protection features include soft-start, current limiting, locked-rotor protection, over-temperature protection, and reverse polarity protection. The fan construction features a die-cast aluminum housing with enhanced IP55 sealing, high-speed ball bearings supporting any mounting orientation, and Class B electrical insulation for safe operation to 130°C ambient. Rated for 50,000 hours L10 lifespan at 40°C with minimal maintenance, this fan is the premier choice for high-voltage DC applications demanding maximum airflow, high static pressure, and superior environmental protection.
| DC Backward Centrifugal Fan |  |
|
| Type | FB3G250-110GL-20 | |
| Model | BLDC102 | |
| Nominal Voltage | VDC | 110 |
| Voltage Range | VDC | 60~143 |
| Current Draw | A | 3.0±10% |
| Speed | RPM | 3600±5% |
| Power Consumption | W | 330±10% |
| Sound Pressure Level | dB(A) | 78±5% |
| Max. Air Flow | m³/h | 2389 |
| Max. Static Pressure | Pa | 1024 |
| Insulation Class | - | Class B |
| Degree of Protection | - | IP55 |
| Control Input | - | 0~10VDC / PWM |
| Signal Output | - | FG (Tach output) |
Remarks:
I. Standard lead wire length is 300mm; customized length available upon request.
II. Control via 0-10VDC analog signal or PWM digital signal.
Test condition:
I. Measurement performed according to ISO 5801, using double chamber method.
II. Test voltage: 110VDC, ambient temperature: 23±2°C, relative humidity: 50±10%.
III. Noise measured at 1m distance in anechoic chamber per ISO 3744.
IV. PQ curve shows performance across 0-100% duty cycle at rated voltage.
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. 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
V. The fan needs to be operated and used under the guidance of professional personnel to prevent children from coming into touch this product
VI. 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
VII. As a part of the fan, it is not recommended to use the motor alone when there is no impeller or loading
1. Highest Airflow in 250mm Series: The FB3G250-110GL-20 achieves a class-leading 2389 m³/h at 1024 Pa on 110VDC — the highest airflow and one of the highest pressure ratings among all 250mm FANOVA DC fans. Powered by the 330W BLDC102 motor at 3600 RPM, it delivers unmatched air-moving capability from high-voltage DC bus power.
2. IP55-Rated for Harsh Environments: Unlike standard IP44 models, the IP55-rated housing provides dust-protected and water-jet-resistant operation — enabling outdoor installation, wash-down environments, and industrial settings where dust and moisture would compromise standard fans.
3. High-Voltage DC Bus Optimized: 75-80% aerodynamic efficiency with a wide 60-143 VDC input range at just 3.0A — ideal for 110VDC nominal systems in renewable energy storage, EV charging infrastructure, and industrial DC microgrids. 30-40% energy savings versus AC alternatives.
4. Renewable Energy & Industrial Applications: Purpose-built for battery energy storage container ventilation, EV charging station cooling, outdoor telecom shelter pressurization, solar farm equipment enclosures, and industrial DC microgrid HVAC. OEM/ODM available.
5. Rugged & Maintenance-Free: Die-cast aluminum IP55 housing, high-speed ball bearings, 50,000-hour L10 lifespan at 40°C, 0-10VDC/PWM plus FG tach for automation, any-orientation mounting, and 3-year warranty.
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 7 days for standard models
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.
