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The WBLF-1251-BS5900 brushless axial fan is a high-performance 12″ (305 mm) cooling solution designed for heavy-duty applications. Built with advanced brushless motor technology, it delivers superior thermal efficiency, low noise, and long-term reliability.
Engineered as a drop-in replacement for SPAL 510, this fan ensures seamless compatibility in size, mounting holes, airflow direction, and electrical connections.
Sunlight can be a strong and reliable partner in order to increase the system efficiency in your advanced vehicle design.WBLF-1251-BS5900 replace SPAL510
Sunlight
| Voltage: | |
|---|---|
| Quantity: | |
It is 24V & suction aiflow & 4900rpm & 4200m3/h & IP68 & PWM control
| Max Fan Speed | 4900rpm |
| Min Fan Speed | 2000rpm |
| Weight | 2.5KG |
| Operating supply voltage rang | 16V -32V |
| Operating working temperature range | -40°C - 85°C |
| Storage temperature range |  -40°C - 120°C |
| Life time | up to 40000 hours depending on missing profile |
| Time from 0 rpm to max speed | 8 seconds |
| IP grade | IP68 |
Note: the blue line is current & the orange line is airflow
High Efficiency: Brushless motor design reduces power consumption and improves cooling performance.
Extended Lifespan: Rated service life of ≥40,000 hours with minimal maintenance needs.
Durable Construction: IP68 waterproof and dustproof, ensuring reliable operation in harsh environments.
Precise Speed Control: PWM input allows smooth, linear adjustment from low to high speed.
Direct Compatibility: Drop-in replacement for SPAL 510 with identical dimensions and mounting points.
Stable & Quiet Operation: Advanced bearing system minimizes vibration and noise.
Wide Application Range: Suitable for construction machinery, agricultural equipment, fire trucks, HVAC systems, and industrial generators.
Certified Quality: IATF 16949, CE, and EMC approvals guarantee international compliance and reliability.
Construction machinery
Agricultural vehicles
Fire trucks and emergency vehicles
Refrigeration trucks and HVAC systems
Generator sets and industrial cooling systems
Ideal for high-temperature, dusty, and humid environments requiring continuous, stable operation.
Install according to airflow orientation markings
Use PWM control for optimal efficiency and noise reduction
Avoid prolonged idle storage in extreme environments
Add filtering/suppression when used with inverters or unstable power supplies
Since 1990, Sunlight has specialized in manufacturing high-performance brushless fans and blowers. Certified with ISO9001 and IATF16949, our products meet CE, RoHS, and EMC standards. Widely applied in automotive, machinery, refrigeration and energy industries. Sunlight is committed to delivering quality, innovation, and reliable cooling solutions.
All fans undergo 100% testing before shipment, with customization and technical support available.
IATF I16949:2016 Certificate
IATF 16949:2016 Certificate
EMC Certificate 
CE certificate
Sample Lead Time: 14days
Mass Production: 21days
MOQ: 2
Customization: Voltage, control mode, wiring, housing treatment available
Contact Us:
Sunny Li: +86-18806140118 / sunny@sunlightmotor.com
Alisa Chen: +86-18806140198 / sales3@czsunlight.com
Frances Zhang: +86-18806140168/ sales1@czsunlight.com
Vicky Li: +86-18806140098/ sunlight@sunlightmotor.com
Q1: What makes this fan better than a brushed fan?
A: Brushless technology offers higher efficiency, lower noise, and a much longer lifespan since there are no brushes to wear out.
Q2: Can this fan handle continuous operation in outdoor environments?
A: Yes. With IP68 protection and a –40°C to +85°C operating range, it is built for continuous use in harsh, dusty, or wet conditions.
Q3: Is the fan plug-and-play with SPAL 510 models?
A: Yes. It is designed as a direct drop-in replacement, with the same dimensions, mounting, and airflow direction.
Q4: Do you provide technical drawings or datasheets?
A: Absolutely. We offer detailed datasheets and 2D/3D drawings upon request to support your engineering design.
Q5: What kind of warranty or after-sales service is available?
A: We provide a standard warranty (usually 12–24 months, depending on order terms) and full technical support from our engineering team.
It is 24V & suction aiflow & 4900rpm & 4200m3/h & IP68 & PWM control
| Max Fan Speed | 4900rpm |
| Min Fan Speed | 2000rpm |
| Weight | 2.5KG |
| Operating supply voltage rang | 16V -32V |
| Operating working temperature range | -40°C - 85°C |
| Storage temperature range | -40°C - 120°C |
| Life time | up to 40000 hours depending on missing profile |
| Time from 0 rpm to max speed | 8 seconds |
| IP grade | IP68 |
Note: the blue line is current & the orange line is airflow
High Efficiency: Brushless motor design reduces power consumption and improves cooling performance.
Extended Lifespan: Rated service life of ≥40,000 hours with minimal maintenance needs.
Durable Construction: IP68 waterproof and dustproof, ensuring reliable operation in harsh environments.
Precise Speed Control: PWM input allows smooth, linear adjustment from low to high speed.
Direct Compatibility: Drop-in replacement for SPAL 510 with identical dimensions and mounting points.
Stable & Quiet Operation: Advanced bearing system minimizes vibration and noise.
Wide Application Range: Suitable for construction machinery, agricultural equipment, fire trucks, HVAC systems, and industrial generators.
Certified Quality: IATF 16949, CE, and EMC approvals guarantee international compliance and reliability.
Construction machinery
Agricultural vehicles
Fire trucks and emergency vehicles
Refrigeration trucks and HVAC systems
Generator sets and industrial cooling systems
Ideal for high-temperature, dusty, and humid environments requiring continuous, stable operation.
Install according to airflow orientation markings
Use PWM control for optimal efficiency and noise reduction
Avoid prolonged idle storage in extreme environments
Add filtering/suppression when used with inverters or unstable power supplies
Since 1990, Sunlight has specialized in manufacturing high-performance brushless fans and blowers. Certified with ISO9001 and IATF16949, our products meet CE, RoHS, and EMC standards. Widely applied in automotive, machinery, refrigeration and energy industries. Sunlight is committed to delivering quality, innovation, and reliable cooling solutions.
All fans undergo 100% testing before shipment, with customization and technical support available.
IATF I16949:2016 Certificate
IATF 16949:2016 Certificate
EMC Certificate CE certificate
Sample Lead Time: 14days
Mass Production: 21days
MOQ: 2
Customization: Voltage, control mode, wiring, housing treatment available
Contact Us:
Sunny Li: +86-18806140118 / sunny@sunlightmotor.com
Alisa Chen: +86-18806140198 / sales3@czsunlight.com
Frances Zhang: +86-18806140168/ sales1@czsunlight.com
Vicky Li: +86-18806140098/ sunlight@sunlightmotor.com
Q1: What makes this fan better than a brushed fan?
A: Brushless technology offers higher efficiency, lower noise, and a much longer lifespan since there are no brushes to wear out.
Q2: Can this fan handle continuous operation in outdoor environments?
A: Yes. With IP68 protection and a –40°C to +85°C operating range, it is built for continuous use in harsh, dusty, or wet conditions.
Q3: Is the fan plug-and-play with SPAL 510 models?
A: Yes. It is designed as a direct drop-in replacement, with the same dimensions, mounting, and airflow direction.
Q4: Do you provide technical drawings or datasheets?
A: Absolutely. We offer detailed datasheets and 2D/3D drawings upon request to support your engineering design.
Q5: What kind of warranty or after-sales service is available?
A: We provide a standard warranty (usually 12–24 months, depending on order terms) and full technical support from our engineering team.
