DC Brushless Axial Fan 24V 12inch 305mm 600W replace SPAL 506 - WBLF-1251-BS3600

Specification of WBLF-1251-BS3600 replace SPAL506

Item	Specification
Motor Wiring	Black wire = Positive (+), Brown wire = Negative (–), Clockwise rotation
Axial Clearance	0.25 mm Max
Pressure Test	660 VAC, 1s, 5 mA
Protection	IP68
Insulation Class	H
Insulation Resistance	≥ 20 MΩ (500 VDC)
Operating Temperature	–40 ℃ ~ +85 ℃
Humidity Range	0 – 100%
Operating Life	≥ 25,000 hours
Vibration	20 ms, 5G
Rated Voltage	24 VDC
Voltage Range	16-32 VDC
Fuse / Insurance	30 A (in controller)
Lead Length	500 ± 20 mm
Tube	A-blade ∅8 PVC tube, length 450 mm
Power Line Model	UL1015 12 AWG
Weight	Approx. 3 kg

Features of WBLF-1251-BS3600 replace SPAL506

Max Fan Speed	4000rpm
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 WBLF-1251-BS3600 replace SPAL506

Airflow of WBLF-1251-BS3600 replace SPAL506

The yellow line is Current  &  The blue line is Airflow

PWM control diagram of WBLF-1251-BS3600 replace SPAL506

Product Picture of WBLF-1251-BS3600 replace SPAL506

Advantages

• High-output 600W design for demanding systems

• SEamless SPAL 506 replacement in most applications

• Robust IP68 construction for outdoor & harsh environments

• Brushless efficiency & lower noise advantage over brushed types

• Fast spin-up & responsive control for dynamic cooling

• Long service life & durability in mobile conditions

• Built-in protection & compliance with automotive EMC standards

• Customizable — blade design, control mode, wiring, etc.

Application

This fan is ideal for:

• Truck / bus radiators & condenser cooling

• Refrigerated transport / reefer units

• Heavy machinery thermal management

• Retrofitting systems using SPAL 506

• Industrial cooling systems

• New energy / charging station cooling

Installation & Usage Tips

• Mount on a rigid, flat surface to prevent distortion

• Ensure correct airflow direction (match system design)

• Wire correctly: black = positive (+), brown = negative (−)

• Keep input voltage within the specified range (18–32V)

• Leave clearance on inlet/outlet sides to avoid airflow obstruction

• Avoid immersion in corrosive liquids or exposure to extreme heat

• Inspect wiring and fastening regularly

• Use PWM or analog control to modulate speed as needed

Certifications

The Experimental Project :

FAQ:

Q1: What is the current draw at full load (600W)?
A1: Under nominal 24V and full load, current is approx. 25 A, varying with airflow resistance and system pressure. Use performance curves for precise values.

Q2: What built-in protections exist in the controller?
A2: Includes reverse polarity protection, over-current protection, thermal shutdown / derating, and soft-start ramp to limit inrush current.

Q3: How is EMC / interference performance ensured?
A3: Passed EMC tests per CISPR 25 / ISO 7637 / ISO 16750 standards for radiated and conducted emissions, suitable for integration in vehicle systems.

Q4: How is noise tested and what are expected levels?
A4: Acoustic testing is carried out in semi-anechoic chambers per ISO 3744 / ISO 5136 at 1 m distance. The specific dB(A) value depends on installation but should be measured and qualified.

Q5: What is the expected lifetime and failure mechanisms?
A5: Designed for ≥ 25,000 – 40,000 hours under nominal duty. Failure modes usually include bearing wear or driver protection triggering (overheat or overcurrent).

Q6: What environmental testing has the fan passed?
A6: Thermal cycling, vibration/shock, waterproof and dust sealing, insulation / pressure / leakage tests, salt spray optionally.