ImpellerØ450 mm17.7 in
Max airflow8,652 m³/h5,092 CFM
Max static pressure1,390.5 Pa5.58 in. wg
Voltage380 V
Speed1,500 rpm
Input power1,100 W1.47 hp
Noise93 dB(A)

LWBE3G450-102NT-20 EC Backward Curved Centrifugal Fan Ø450 mm

Ø450 mm | EC | Max airflow 8,652 m³/h | Max static pressure 1,390.5 Pa | 93 dB(A)

SKU: LWBE3G450-102NT-20 Categories: Backward Curved Centrifugal Fans, Centrifugal Fans, Impeller Ø400–560 mm

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

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.

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WhatsApp / Phone+86 183 5827 4663 E-mail an engineersales@longwellfans.com Datasheet (PDF)electrical & performance data All files for LWBE3G450-102NT-20drawings · curves · datasheet

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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.

LWBE3G450-102NT-20 Dimensional drawing — **Dimensional drawing**Dimensions in mm. Confirm against the final approval drawing before machining cut-outs.

LWBE3G450-102NT-20 Performance curve (P-Q) — **Performance curve (P-Q)**Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.

LWBE3G450-102NT-20 Wiring diagram — **Wiring diagram**Lead colours and terminal assignment; TK = motor thermal contact.

Downloads for LWBE3G450-102NT-20

PDFDatasheet PDFDrawing · 386 KB DOCXDatasheet · 517 KB

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

LWBE3G450-102NT-20 is a LONGWELL EC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø450 mm, rated 380 V EC, maximum airflow 8,652 m³/h, maximum static pressure 1,390.5 Pa, noise 93 dB(A), input power 1,100 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	LWBE3G450-102NT-20
Series	LWBE3G450
Motor type	EC
Phase	3-phase
Rated voltage	380 V
Frequency	50 Hz
Current	1.8 A
Input power	1,100 W
Speed	1,500 rpm
Max. airflow	8,652 m³/h
Max. static pressure	1,390.5 Pa
Noise	93 dB(A)
Ambient temperature	-25 ~ 60 °C
Storage temperature	-40 ~ 80℃
Humidity	5 ~ 90 % RH
Altitude	< 1000m
Impeller diameter	Ø450 mm
Rotor diameter	102
Impeller material	Metal ( Impeller )
Protection class	IP55
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
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 LWBE3G450: 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 (Ø450 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
LWBE3G450-102NT-20 this model	8,652 m³/h	1,390.5 Pa	1,500 rpm	1,100 W	93 dB(A)	380 V
LWBE3G450-138PT-12	5,329 m³/h	452 Pa	1,200 rpm	386 W	—	400 V	View
LWBE3G450-138PT-13	7,182 m³/h	730 Pa	1,610 rpm	900 W	—	400 V	View
LWBE3G450-188PT-07	7,425 m³/h	1,568 Pa	2,400 rpm	1,590 W	—	400 V	View
LWBE3G450-188NT-15	7,425 m³/h	1,568 Pa	2,400 rpm	1,590 W	70 dB(A)	400 V	View
LWFE3G450-102PS-11	7,467.5 m³/h	1,030 Pa	1,450 rpm	700 W	70 dB(A)	230 V	View
LWBE3G450-138PT-04	7,828 m³/h	824 Pa	1,720 rpm	910 W	79 dB(A)	400 V	View
LWBE3G450-188PT-08	8,019 m³/h	1,802 Pa	2,600 rpm	2,060 W	—	400 V	View
LWBE3G450-188NT-16	8,019 m³/h	1,802 Pa	2,600 rpm	2,060 W	74 dB(A)	400 V	View
LWFE3G450-102PT-06	8,652 m³/h	1,390.5 Pa	1,500 rpm	1,100 W	85 dB(A)	400 V	View
LWBE3G450-188PT-09	8,661 m³/h	2,114 Pa	2,800 rpm	2,595 W	—	400 V	View
LWBE3G450-188NT-17	8,661 m³/h	2,114 Pa	2,800 rpm	2,595 W	85 dB(A)	400 V	View
LWBE3G450-188PT-16	8,985 m³/h	840 Pa	2,600 rpm	2,400 W	—	400 V	View
LWBE3G450-188NT-22	10,752 m³/h	1,669 Pa	2,400 rpm	2,400 W	92 dB(A)	380 V	View
LWBE3G450-188NT-21	12,647 m³/h	2,342 Pa	2,800 rpm	4,600 W	96 dB(A)	380 V	View