DC Brushless Axial Fan 24V 12inch 305mm 3500m3/h 3400rpm Max WBLF-1251-BS3500

The WBLF-1251-BS3500 is a 24V brushless DC axial fan with a 305 mm diameter. It delivers up to 3,500 m³/h airflow and a maximum speed of 3,400 rpm.
Its sealed IP68 construction, long service life, and flexible PWM speed control make it ideal for heavy-duty vehicles and demanding cooling applications.

Model:
WBLF-1251-BS3500
Brand:
Sunlight

Voltage:	24V
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Product Description

Specification of Brushless Axial Fan WBLF-1251-BS3500

1,The motor black wire connect the positive,Brown wire connect the negative . clockwise rotation
2,Axial clearance: 0.25mm Max;
3,Pressure test,:660VAC 1S 5mA;
4,Protection:IP68
5,Insulation class:H
6,Insulation resistance:20MΩMIN(500VDC)
7,Operaing temperture:-40-85℃
8,Humidity:0-100°
9,Operaing life:25000 hours Min
10,Vibration :20ms 5G
11,Rated voltage:24VDC Voltage Range:16-32VDC
12,30A Insurance in controller
13,Lead length:500±20mm,A blace∅8 PVCtube length 450
14,Power line model:UL1015 12AWG
15,Weight Approx:3Kg

Features of Brushless Axial Fan WBLF-1251-BS3500

It is 24V & suction aiflow & 3800rpm & 3500m3/h & IP68 & PWM control

Max Fan Speed	3400rpm
Min Fan Speed	2000rpm
Weight	2.2KG
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

The drawing of dimension (mm) of Brushless Axial Fan WBLF-1251-BS3500

Airflow of Brushless Axial Fan WBLF-1251-BS3500

The yellow line is Current & The blue line is Airflow

12inch brushless

PWM control diagram of Brushless Axial Fan WBLF-1251-BS3500

Product Picture of Brushless Axial Fan WBLF-1251-BS3500

Brushless Axial Fan- goods picture - Sunlight Motor

Advantages

High Airflow Output: Provides up to 3,500 m³/h to ensure efficient heat dissipation in demanding applications.
Durable Long Life: Brushless motor design delivers a service life of ≥25,000 hours, reducing replacement frequency and maintenance cost.
Reliable Protection: Fully sealed to IP68 standard for superior water and dust resistance, suitable for harsh environments.
Wide Application Voltage: Operates reliably within 16–32V DC, covering various truck, bus, and equipment systems.
Flexible Speed Control: Supports PWM signal input for smooth and energy-saving speed adjustment.
Fast Startup: Reaches maximum speed in about 8 seconds, ensuring rapid cooling when needed.
Direct Replacement: Compatible mounting and performance with SPAL models, simplifying upgrades and replacements.

Application

Truck and bus cooling systems (radiator, condenser)
Construction and mining machinery
Refrigerated trucks and cold chain logistics
New energy systems: EV battery packs, charging piles, inverters
Special vehicles such as fire trucks and ambulances

brushless axial fan application - Sunlight Motor

Installation & Usage

Mounting Position: Install the fan securely on the radiator or condenser using the provided brackets or compatible mounts.
Wiring Connection:

Red wire → Positive (+24V DC)
Black wire → Negative (Ground)
Optional PWM/Signal wire → Speed control input

Rotation Check: Ensure the airflow direction matches your cooling requirements before final tightening.
Clearance Space: Leave at least 10 mm space around the fan blades for safe rotation.
Testing: After installation, power on the system and confirm stable operation without abnormal noise or vibration.
Maintenance: Keep the fan surface clean and remove dust or debris regularly to maintain optimal airflow.