ImpellerØ280 mm11.0 in
Max airflow1,648 m³/h970 CFM
Max static pressure608 Pa2.44 in. wg
Voltage48 V
Speed2,400 rpm
Input power130 W
Noise72 dB(A)

LWBD3G280-092NH-04 DC Backward Curved Centrifugal Fan Ø280 mm

Ø280 mm | DC | Max airflow 1,648 m³/h | Max static pressure 608 Pa | 72 dB(A)

SKU: LWBD3G280-092NH-04 Categories: Backward Curved Centrifugal Fans, Centrifugal Fans, Impeller Ø250–355 mm

Factory direct
OEM / ODM
Samples in 1–3 days
Production 15–30 days
18-month warranty
CE · ETL · RoHS

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Engineering files (on request)

CAD files exist for this model and can be released for assembly checks in SolidWorks / CATIA / Creo / Inventor.

STP3D model (STEP)2.9 MBRequest →

CAD models contain the blade geometry and are not downloadable. Tell us the project; an engineer sends the file after a short check, normally within 1 business day.

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WhatsApp / Phone+86 183 5827 4663 E-mail an engineersales@longwellfans.com Datasheet (PDF)electrical & performance data All files for LWBD3G280-092NH-04drawings · curves · datasheet

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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.

LWBD3G280-092NH-04 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWBD3G280-092NH-04 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

LWBD3G280-092NH-04 Wiring diagram — **Wiring diagram**Lead colours and terminal assignment; TK = motor thermal contact.

Downloads for LWBD3G280-092NH-04

PDFDatasheet

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

LWBD3G280-092NH-04 is a LONGWELL DC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø280 mm, rated 48 V DC, maximum airflow 1,648 m³/h, maximum static pressure 608 Pa, noise 72 dB(A), input power 130 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.

Technical data

Model	LWBD3G280-092NH-04
Series	LWBD3G280
Motor type	DC
Rated voltage	48 V
Current	2.8 A
Input power	130 W
Speed	2,400 rpm
Max. airflow	1,648 m³/h
Max. airflow (CFM)	940 CFM
Max. static pressure	608 Pa
Noise	72 dB(A)
Ambient temperature	-25 ~ 80 °C
Storage temperature	-25 ~ 80℃
Humidity	5 ~ 90 % RH
Altitude	< 1000m
Impeller diameter	Ø280 mm
Rotor diameter	92
Impeller material	Galvanized Metal Sheet ( Impeller )
Protection class	IP42
Insulation class	F
Bearing	Maintenance-free deep groove ball bearings
Duty	S1
Balance grade	G6.3
Vibration standard	JB/T 8689
Service life	40,000Hours(L10), At 25 °Croom, humidity 15%~65%RH
Rotation	Clockwise,seen on rotor

Typical applications

Air handling units (AHU) and rooftop units (RTU)
Data-center CRAH / CRAC units and fan walls
Dust extraction and process ventilation
Fan filter units and air purifiers

Series LWBD3G280: 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.