24V 12-Inch Brushless Axial Fan | Replace SPAL BBL381

Specification of WBLF-1251-BS2400-V replace SPAL381

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 WBLF-1251-BS2400-V  replace SPAL381

Max Fan Speed	3550rpm
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) WBLF-1251-BS2400-V  replace SPAL381

Airflow of WBLF-1251-BS2400-V  replace SPAL381

The yellow line is Current  &  The blue line is Airflow

PWM control diagram of WBLF-1251-BS2400-V  replace SPAL381

Product Picture of WBLF-1251-BS2400-V  replace SPAL381

Advantages

• High Airflow & Stable Performance: Up to 3,550 rpm with airflow of 3,500 m³/h.

• Wide Voltage Range: Operates reliably from 16V to 32V.

• Extended Lifespan: ≥ 25,000 hrs (up to 40,000 hrs under proper conditions).

• IP68 Protection: Strong resistance against water and dust.

• Fast Response: 0 → Max speed in only 8 seconds.

• Flexible Control: Supports PWM input for smooth speed adjustment.

• Certified Quality: CE, EMC, IATF/ISO certifications available.

Application

This fan is widely used in:

• Construction machinery (loaders, excavators, rollers)

• Bus / coach A/C condenser systems

• New energy charging piles, inverters, and EV battery packs

• Refrigerated trucks & cold chain systems

About Sunlight

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.

Certifications

EMC Certificate

CE certificate

The Experimental Project :

Name1

Name2

Name3

Name4

Name5

Name1

Name2

Name3

Name4

Name5

Ordering Information

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 

FAQ

Q1: Does this fan rotate clockwise or counterclockwise?
A1: It rotates clockwise (viewed from motor side). Black wire = Positive, Brown wire = Negative.

Q2: Can I use it in a 12V system?
A2: This is a 24V fan. It works within 16–32V range. For 12V systems, performance will not meet requirements.

Q3: How long is the service life?
A3: Designed lifetime is ≥ 25,000 hrs. Under optimized working conditions, it can reach 40,000 hrs or more.

Q4: How do I control the speed?
A4: The fan supports PWM input control for flexible speed adjustment.

Q5: How do I confirm it can replace SPAL BBL381?
A5: Mounting dimensions, airflow, voltage, and performance are matched. We recommend checking installation space and requirements before ordering.