- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
 |
WBLF-1251-BS3850-D
SUNLIGHT (SLT)
| Quantity: | |
|---|---|
Max fan speed | rpm | 4400 |
| Min fan speed | rpm | 2000 |
| Sound pressure level | dBA | 85 - at 1 m from the fan module - lateral side |
| Weight | kg | 2.5 |
| Operating supply voltage range | V | 18 - 32 at the Drive connector |
| Supply voltage to reach max speed | V | 26 - 32 at the Drive connector |
| Operating ambient temperature range | °C | -40 - +85 |
| Speed derating threshold | °C | +85 (*) |
| Storage temperature range | °C | -40 - +110 |
| Lifetime | h | up to 40000 hours depending on mission profile |
| Time from 0 rpm to max speed | s | 3~5s |
| Load dump protection ( Pulse 5b ) | V | 65 - Pulse peak voltage (Us*) - ISO16750 - 2:2010 |
| Reverse polarity protection | yes |
EMC for brushless fan 
EMC for axial fan
CEPCT
CE certification
ISO9001 certification
patent for invention
patent for invention
Utility patents
High Power Output (850W): Provides strong airflow for heavy-duty cooling needs.
Direct SPAL Replacement: Fully compatible with SPAL BBL504 and similar models.
Durable IP68 Design: Dustproof and waterproof for harsh outdoor environments.
Fast Startup: Reaches full speed in just 3–5 seconds.
Long Service Life: Up to 40,000 hours under proper operating conditions.
Advanced Protection: Reverse polarity, load dump, and EMC compliance ensure system safety.
Energy Efficient: Brushless motor reduces power loss and operating cost.
Customizable: Options for PWM, analog, or digital speed control to match system requirements.
This fan is suited for:
Heavy trucks, buses (radiator, condenser cooling)
Refrigerated transport units
Engineering / construction machinery
New energy vehicles & hydrogen systems
Charging station cooling / heat dissipation systems
Replacement for SPAL BBL504 in existing systems
New nergy vehicle 
Hydrogen fuel vehicles heat dissiation system
New energy charging pile heat dissipation system
delivery dc fans 
delivery to European
delivery brushless fans 
Exhibition show romm
BMW exhibition hall
Name4
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: Why should I choose this 305 mm 24V 850W brushless fan over a conventional fan?
A: Brushless DC technology provides higher efficiency, lower noise, longer lifespan, and better controllability compared to traditional brushed fans.
Q2: What are the typical performance specifications?
A:
Max Speed: ~4400 RPM
Min Speed: ~2000 RPM
Operating Voltage Range: 18–32V
Rated Lifespan: up to 40,000 hours (depending on duty cycle)
Q3: How is the speed controlled?
A: The fan supports PWM control, allowing linear adjustment from low to high speed. Custom control options can also be provided on request.
Q4: Can this fan work in harsh environments?
A: Yes. It features IP68 protection and is designed to operate reliably from –40 °C to +85 °C.
Q5: Is it compatible with existing fan models?
A: It is often compatible in size (305 mm), mounting patterns, and electrical connections with many common fans. Please verify airflow direction and wiring before replacement.
Q6: Do you provide samples for testing?
A: Yes, samples are available for evaluation before bulk ordering.
Max fan speed | rpm | 4400 |
| Min fan speed | rpm | 2000 |
| Sound pressure level | dBA | 85 - at 1 m from the fan module - lateral side |
| Weight | kg | 2.5 |
| Operating supply voltage range | V | 18 - 32 at the Drive connector |
| Supply voltage to reach max speed | V | 26 - 32 at the Drive connector |
| Operating ambient temperature range | °C | -40 - +85 |
| Speed derating threshold | °C | +85 (*) |
| Storage temperature range | °C | -40 - +110 |
| Lifetime | h | up to 40000 hours depending on mission profile |
| Time from 0 rpm to max speed | s | 3~5s |
| Load dump protection ( Pulse 5b ) | V | 65 - Pulse peak voltage (Us*) - ISO16750 - 2:2010 |
| Reverse polarity protection | yes |
EMC for brushless fan EMC for axial fan
CEPCT
CE certification
ISO9001 certification
patent for invention
patent for invention
Utility patents
High Power Output (850W): Provides strong airflow for heavy-duty cooling needs.
Direct SPAL Replacement: Fully compatible with SPAL BBL504 and similar models.
Durable IP68 Design: Dustproof and waterproof for harsh outdoor environments.
Fast Startup: Reaches full speed in just 3–5 seconds.
Long Service Life: Up to 40,000 hours under proper operating conditions.
Advanced Protection: Reverse polarity, load dump, and EMC compliance ensure system safety.
Energy Efficient: Brushless motor reduces power loss and operating cost.
Customizable: Options for PWM, analog, or digital speed control to match system requirements.
This fan is suited for:
Heavy trucks, buses (radiator, condenser cooling)
Refrigerated transport units
Engineering / construction machinery
New energy vehicles & hydrogen systems
Charging station cooling / heat dissipation systems
Replacement for SPAL BBL504 in existing systems
New nergy vehicle Hydrogen fuel vehicles heat dissiation system
New energy charging pile heat dissipation system
delivery dc fans delivery to European
delivery brushless fans Exhibition show romm
BMW exhibition hall
Name4
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: Why should I choose this 305 mm 24V 850W brushless fan over a conventional fan?
A: Brushless DC technology provides higher efficiency, lower noise, longer lifespan, and better controllability compared to traditional brushed fans.
Q2: What are the typical performance specifications?
A:
Max Speed: ~4400 RPM
Min Speed: ~2000 RPM
Operating Voltage Range: 18–32V
Rated Lifespan: up to 40,000 hours (depending on duty cycle)
Q3: How is the speed controlled?
A: The fan supports PWM control, allowing linear adjustment from low to high speed. Custom control options can also be provided on request.
Q4: Can this fan work in harsh environments?
A: Yes. It features IP68 protection and is designed to operate reliably from –40 °C to +85 °C.
Q5: Is it compatible with existing fan models?
A: It is often compatible in size (305 mm), mounting patterns, and electrical connections with many common fans. Please verify airflow direction and wiring before replacement.
Q6: Do you provide samples for testing?
A: Yes, samples are available for evaluation before bulk ordering.
