Frame size75 mm3.0 in
Max airflow21 m³/h12 CFM
Max static pressure185 Pa0.74 in. wg
Voltage24 V
Speed3,500 rpm
Input power7.2 W
Noise45.1 dB(A)

LWFD7530MM-03 DC Centrifugal Blower 75 mm

75 mm | DC | Max airflow 21 m³/h | Max static pressure 185 Pa | 45.1 dB(A)

SKU: LWFD7530MM-03 Categories: Cooling Fans & Blowers, DC Centrifugal Blowers, Frame Ø75–120 mm

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Samples in 1–3 days
Production 15–30 days
18-month warranty
CE · ETL · RoHS

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WhatsApp / Phone+86 183 5827 4663 E-mail an engineersales@longwellfans.com All files for LWFD7530MM-03drawings · curves · datasheet

Samples 1–3 days · fee credited to your order
From ~30 pcs for a first validation order
T/T 30 / 70 · FOB / CIF / DDP
100% tested · 18-month warranty
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Required airflow Required static pressure

Digitised from the catalogue curve at standard air (20 °C, 101.3 kPa, 1.2 kg/m³); one curve per voltage / speed grade. The system resistance curve depends on the actual ductwork — confirm the operating point on site. Need an engineer to verify the duty point? Contact us or add the model to your RFQ and note the duty point.

LWFD7530MM-03 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWFD7530MM-03 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

Need a non-standard size or another format? Ask an engineer or search the download center.

LWFD7530MM-03 is a LONGWELL DC Centrifugal Blower from the DC Centrifugal Blowers range, frame size 75 mm, rated 24 V DC, maximum airflow 21 m³/h, maximum static pressure 185 Pa, noise 45.1 dB(A), input power 7.2 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.

Technical data

Model	LWFD7530MM-03
Series	LWFD7530
Motor type	DC
Rated voltage	24 V
Current	0.3 A
Input power	7.2 W
Speed	3,500 rpm
Max. airflow	21 m³/h
Max. static pressure	185 Pa
Noise	45.1 dB(A)
Frame size	75 mm
Dimensions	75x30mm
Impeller material	Plastic(UL94-VO)

Typical applications

Power supplies and inverters
Telecom and server cabinets
Battery packs and EV chargers
Medical and laboratory equipment

Series LWFD7530: models in the same series share the impeller and motor platform and differ in speed grade, voltage or lead-out / terminal-box configuration — compare them in the table below or ask for the best fit at your duty point.

Nameplate values: maximum airflow is measured at zero static pressure and maximum static pressure at zero airflow; the two never occur together. Confirm the operating point on the performance curve. Final selection is subject to the duty point (airflow / static pressure / voltage / control mode) and project verification.

Alternatives with the same frame size (75 mm · DC)

Same impeller, different speed grade, power or wiring. Step up for more airflow, step down for lower noise.

Model	Max airflow	Max static pressure	Speed	Power	Noise	Voltage
LWFD7530MM-03 this model	21 m³/h	185 Pa	3,500 rpm	7.2 W	45.1 dB(A)	24 V
LWFD7530HD-05	15 m³/h	95 Pa	2,500 rpm	4.8 W	37.8 dB(A)	48 V	View
LWFD7530MD-05	15 m³/h	95 Pa	2,500 rpm	4.8 W	37.8 dB(A)	24 V	View
LWFD7530LD-05	15 m³/h	95 Pa	2,500 rpm	3.6 W	37.8 dB(A)	12 V	View
LWFD7530HL-04	18 m³/h	136 Pa	3,000 rpm	7.2 W	41.8 dB(A)	48 V	View
LWFD7530ML-04	18 m³/h	136 Pa	3,000 rpm	6 W	41.8 dB(A)	24 V	View
LWFD7530LL-04	18 m³/h	136 Pa	3,000 rpm	4.8 W	41.8 dB(A)	12 V	View
LWFD7530HM-03	21 m³/h	185 Pa	3,500 rpm	9.6 W	45.1 dB(A)	48 V	View
LWFD7530LM-03	21 m³/h	185 Pa	3,500 rpm	6 W	45.1 dB(A)	12 V	View
LWFD7530HH-02	24 m³/h	242 Pa	4,000 rpm	12 W	48 dB(A)	48 V	View
LWFD7530MH-02	24 m³/h	242 Pa	4,000 rpm	8.4 W	48 dB(A)	24 V	View
LWFD7530LH-02	24 m³/h	242 Pa	4,000 rpm	7.2 W	48 dB(A)	12 V	View
LWFD7530HX-01	27 m³/h	306 Pa	4,500 rpm	14.4 W	50.6 dB(A)	48 V	View
LWFD7530MX-01	27 m³/h	306 Pa	4,500 rpm	9.6 W	50.6 dB(A)	24 V	View
LWFD7530LX-01	27 m³/h	306 Pa	4,500 rpm	8.4 W	50.6 dB(A)	12 V	View