WBLF-1251-BS5900-E 12inch 305mm Brushless Fan 900W

Features of WBLF-1251-BS5900-E 12inch 305mm Brushless Fan Replace SPAL 504

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

The drawing of WBLF-1251-BS5900-E 12inch 305mm Brushless Fan Replace SPAL 504

Specification of WBLF-1251-BS5900-E 12inch 305mm Brushless Fan Replace SPAL 504

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

Airflow of WBLF-1251-BS5900-E 12inch 305mm Brushless Fan Replace SPAL 504

Note: the blue line is current & the orange line is airflow

PWM control diagram of WBLF-1251-BS5900-E 12inch 305mm Brushless Fan Replace SPAL 504

Product Picture of WBLF-1251-BS5900-E 12inch 305mm Brushless Fan Replace SPAL 504

Advantages

• High power & airflow: 900W at this size provides excellent cooling capacity

• Drop-in replacement for SPAL BBL504 — easier retrofit

• Robust sealing (IP68) for outdoor, harsh environments

• Brushless efficiency: lower noise, lower maintenance

• Fast response & control: reaches full speed in ~8 seconds; supports PWM

• Designed durability: built for vibration, insulation, pressure test, etc.

• In-house engineering & production for consistency and quality

• OEM certifications & testing: supports integration into professional systems

  
  

Application of WBLF-1251-BS5900 12inch 305mm Brushless Fan Replace SPAL 510

This fan is ideal for use in:

• Truck / bus radiators and condensers

• Refrigerated transport / reefer units

• Heavy-duty machinery and construction equipment

• New energy / electric vehicle cooling systems

• Retrofit projects replacing SPAL BBL504

• Cooling systems requiring high airflow in compact 12-inch format

Installation & Usage Tips

• Mount on a flat, rigid surface to avoid frame distortion

• Respect airflow direction (suction / draw)

• Use correct wiring: black = positive, brown = negative

• Keep supply voltage stable in 16 - 32 V DC range

• Avoid direct exposure to corrosive substances or extreme radiant heat

• Leave sufficient clearance in front and back of fan for unobstructed airflow

• Periodically inspect wiring, connectors, and mounting bolts

• Use PWM / control signal to modulate speed and improve efficiency

Certifications

EMC Certificate

CE certificate

The Experimental Project :

FAQ:

Q1: What is the current consumption at full load?
A1: At 24V and 900W output, the fan draws approx. 37–38 A, depending on system backpressure.

Q2: Does the fan support speed control?
A2: Yes, it supports PWM input (10–90% duty cycle) for accurate speed regulation.

Q3: Which EMC standards are met?
A3: Tested per CISPR 25, ISO 7637, and ISO 16750, ensuring vehicle system compatibility.

Q4: How is noise level measured?
A4: Noise is tested in a semi-anechoic chamber at 1 m per ISO 3744, typically ~80–85 dB(A).

Q5: What are the environmental operating limits?
A5: Operating temperature –40 °C to +85 °C, storage up to +120 °C, humidity 0–100%, IP68 sealed.

Q6: What is the expected service life?
A6: Designed for ≥ 25,000 hours under rated duty cycle and proper conditions.