ImpellerØ120 mm4.7 in
Max airflow433 m³/h255 CFM
Max static pressure263 Pa1.06 in. wg
Voltage230 V
Speed1,900 rpm
Input power70 W
Noise59 dB(A)

LWFE3G120-072DS-01 EC Dual Inlet Forward Centrifugal Blower Ø120 mm

Ø120 mm | EC | Max airflow 433 m³/h | Max static pressure 263 Pa | 59 dB(A)

SKU: LWFE3G120-072DS-01 Categories: Centrifugal Fans, Dual Inlet Forward Curved Blowers, Impeller Ø120–146 mm

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

View RFQ →

Engineering files (on request)

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

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.

Get a quote · LWFE3G120-072DS-01

Price, curve check and lead time within 1 business day.

Used only for this quotation and technical support.

WhatsApp / Phone+86 183 5827 4663 E-mail an engineersales@longwellfans.com Datasheet (PDF)electrical & performance data All files for LWFE3G120-072DS-01drawings · 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
How ordering works →

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.

LWFE3G120-072DS-01 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWFE3G120-072DS-01 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

LWFE3G120-072DS-01 Wiring diagram — **Wiring diagram**Lead colours and terminal assignment; TK = motor thermal contact.

Downloads for LWFE3G120-072DS-01

PDFDatasheet DOCXDatasheet · 412 KB PDFDrawing · 507 KB

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

LWFE3G120-072DS-01 is a LONGWELL EC Dual Inlet Forward Centrifugal Blower from the Dual Inlet Forward Curved Blowers range, impeller Ø120 mm, rated 230 V EC, maximum airflow 433 m³/h, maximum static pressure 263 Pa, noise 59 dB(A), input power 70 W. The EC motor integrates the drive electronics: stepless speed control by 0–10 V or PWM signal, speed feedback and high efficiency at part load.

Technical data

Model	LWFE3G120-072DS-01
Series	LWFE3G120
Motor type	EC
Phase	1-phase
Rated voltage	230 V
Frequency	50 Hz
Current	0.55 A
Input power	70 W
Speed	1,900 rpm
Max. airflow	433 m³/h
Max. airflow (CFM)	255 CFM
Max. static pressure	263 Pa
Noise	59 dB(A)
Ambient temperature	-25 ~ 60 °C
Storage temperature	-25 ~ 70℃
Humidity	0 ~ 85 % RH
Altitude	< 1000m
Impeller diameter	Ø120 mm
Rotor diameter	72
Impeller material	Galvanised sheet steel ( Impeller )
Protection class	IP44
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 40 °Croom, humidity 15%~65%RH
Speed control	Control input 0~10VDC/PWM
Control signal	Control signal VSP voltage range1±0.1VDC~10±0.2VDC(During normal operation, when the VSP voltage is below 1.2±0.1VDC, the motor switches from operating mode to standby mode)
PWM input	PWM signal: frequency 1K–10KHz, amplitude 10V,duty cycle 10%–100% .
Speed feedback	Tach output: 1 Pulse/R.

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 LWFE3G120: 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 impeller (Ø120 mm · EC)

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
LWFE3G120-072DS-01 this model	433 m³/h	263 Pa	1,900 rpm	70 W	59 dB(A)	230 V
LWAE12038SL-03	77 m³/h	54.33 Pa	2,500 rpm	—	40 dB(A)	100-240 V	View
LWAE12038SM-02	91.03 m³/h	73.74 Pa	3,000 rpm	—	43 dB(A)	100-240 V	View
LWAE12038SL-06	94.72 m³/h	59.07 Pa	2,500 rpm	—	40 dB(A)	100-240 V	View
LWAE12038SH-01	108.21 m³/h	90.98 Pa	3,500 rpm	—	47 dB(A)	100-240 V	View
LWAE12038SM-05	115.01 m³/h	80.53 Pa	3,000 rpm	—	43 dB(A)	100-240 V	View
LWAE12038SH-04	139.1 m³/h	111.47 Pa	3,500 rpm	—	47 dB(A)	100-240 V	View
LWFE3G120-072SS-01	268 m³/h	443 Pa	2,200 rpm	42 W	60 dB(A)	230 V	View
LWFE3G120-072NS-01	350 m³/h	412 Pa	3,230 rpm	90 W	67 dB(A)	230 V	View
LWFE3G120-072SS-02	361 m³/h	649 Pa	3,650 rpm	75 W	61 dB(A)	230 V	View
LWCE-120380SN-06	900 m³/h	68 Pa	1,350 rpm	53 W	63 dB(A)	230 V	View
LWCE-120560SN-06	1,350 m³/h	102 Pa	1,350 rpm	70 W	65 dB(A)	230 V	View
LWCE-120680SN-06	1,600 m³/h	123 Pa	1,350 rpm	80 W	67 dB(A)	230 V	View
LWCE-120780SN-06	1,900 m³/h	141 Pa	1,350 rpm	92 W	71 dB(A)	230 V	View
LWCE-120900SN-06	2,100 m³/h	161 Pa	1,350 rpm	105 W	72 dB(A)	230 V	View