LONGWELL 250mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 115/230V, Low Noise, for Air Purifiers, Cold Storage, HVAC Systems

Voltage 115/230V
ISO / CE / UL / ETL Factory & Test Lab OEM / ODM ebm-papst alternative

$ 35

Specifications
Motor
AC external rotor motor
Speed
4000rpm, 500RPM, 800RPM, 1500RPM, 600RPM, 900rpm, 2000RPM
Impeller
Propylene with glass fiber reinforced
Category: Tags: , ,
CategoryBackward Curved Centrifugal Fans
TagsBackward Curved Centrifugal FanExternal Rotor MotorGas Delivery and Pressurization
Get a Fast Quote from an Engineer Send your airflow, static pressure & voltage — we reply within one working day with a matching model.
✓ 1-day reply ✓ STEP / CAD on request ✓ Factory-direct

Your specifications go straight to a sales engineer — no spam, never shared.

Prefer a datasheet?
Download Product Catalog (PDF)
Need the exact model with a measured or digitised curve? This page describes the Backward Curved Centrifugal Fans range. The Fan Selector lists every LONGWELL backward-curved centrifugal fan model with airflow, static pressure, power, noise, drawing and datasheet.
Search backward-curved centrifugal fan models →
Have your duty point?

See every LONGWELL model whose P-Q curve covers it — margins, noise and power included. No login.

Library: Ø25–1,000 mm, single units up to about 52,000 m³/h — larger duties go straight to an engineer. Prefer to talk it through? Send your specs to an engineer

Description

Types :

250mm AC low noise backward centrifugal fan for Gas delivery and pressurization
Voltage Ranges :

230V,380V
Frequency :

50/60 Hz
Diamter :

250mm ( impeller diameters )
Motor Types :

BLEC External Rotor Motor 
Speed Control :

0-10V Signal / PWM / RS485(Optional)
Max.ambient Temp:

-25℃～ +60℃
Certificating :

All necessary certifications suitable for USA & Europe , ETL,UL ,CE ,RoHS, ISO19001,ISO 14001,BSCI
Protection Level:

IP44 ,IP54,IP55
Electronic Protection:

Current limiting protection ,Over-temperature protection,Over-current protection,Locked-rotor protection,Soft start
Working & Storage

Operating temperature：-25~60℃；Operating humidity：0 ~ 85 % RH
Storing temperature：-25 ~ 70℃；Storing humidity：0 ~ 95 % RH
Applicable altitude range：＜1000m
Balancing

According to JB/T 9101-1999 requirements G6.3
Product Standards :

LVD EN60950-1 EMC EN61000-6-3,EN61000-4-2, EN61000-4-3
Mainly Applications

AUH/ AIR PURIFIER / Server Cooling & Ventilation / Grow Tent /Ventilation SYSTEM/ Equipments Cooling /Refrigerator ,etc;ventilation fan cooling;ventilation exhaust fans

Additional information

Voltage

115/230V
speed

4000rpm, 500RPM, 800RPM, 1500RPM, 600RPM, 900rpm, 2000RPM
Blade Material

Plastic
customized support

OEM, ODM, OBM
mounting

FREE STANDING
place of origin

Zhejiang, China
brand name

LONGWELL
warranty

1 Year
After-sales Service Provided

Video technical support
Material

Stainless Steel, Plastic, aluminum alloy, Steel
Type

Backward centrifugal blower fan
power input

AC 115/230
Impeller material

Propylene with glass fiber reinforced
Bearing

Ball Bearing
Approvals

CE,CCC
Motor type

AC external rotor motor
Amb,Temp

-20 to +60℃
Insulation

B/F
Application

AIR EXCHANGER ,AIR PURIFIER
Usage

High Pressure Blowing
Selling units

Single item
Single package size

30X30X18 cm
Single gross weight

4.500 kg

Reviews

There are no reviews yet.

Be the first to review “LONGWELL 250mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 115/230V, Low Noise, for Air Purifiers, Cold Storage, HVAC Systems”

Your email address will not be published. Required fields are marked *

More in this series

LONGWELL 138mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V IP54, 4532 m³/h Airflow, 494 Pa Static Pressure – LWBA4E400-138NS-07LONGWELL 138mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V IP54, 4532 m³/h Airflow, 494 Pa Static Pressure – LWBA4E400-138NS-07138 mm4532 m³/h230 VDatasheet, curve & drawing →LONGWELL 190mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, Aluminum Alloy, Low Noise, for Cold StorageLONGWELL 190mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, Aluminum Alloy, Low Noise, for Cold Storage4 inOther4000 RPMView & InquireLONGWELL 400mm EC Plug Fan, EC Centrifugal Blower Fan, 230V, 700 W, Aluminum Alloy, Low Noise, for AHU, FFU, Data Center CoolingLONGWELL 400mm EC Plug Fan, EC Centrifugal Blower Fan, 230V, 700 W, Aluminum Alloy, Low Noise, for AHU, FFU, Data Center Cooling4 in230 V4000 RPMView & InquireLONGWELL 400mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, Low Noise, for AHU, HVAC Systems, FFULONGWELL 400mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, Low Noise, for AHU, HVAC Systems, FFUView & InquireLONGWELL 102mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V IP54, 1030 m³/h Airflow, 155 Pa Static Pressure – LWBA6E315-102NS-07LONGWELL 102mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V IP54, 1030 m³/h Airflow, 155 Pa Static Pressure – LWBA6E315-102NS-07102 mm1030 m³/h230 VDatasheet, curve & drawing →LONGWELL 355mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V, Stainless Steel, for AHU, FFU, Data Center CoolingLONGWELL 355mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V, Stainless Steel, for AHU, FFU, Data Center Cooling280mm230 V3500rpmView & InquireLONGWELL 188mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 380V IP54, 13287 m³/h Airflow, 948 Pa Static Pressure – LWBA4D560-188NT-01LONGWELL 188mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 380V IP54, 13287 m³/h Airflow, 948 Pa Static Pressure – LWBA4D560-188NT-01188 mm13287 m³/h380 VDatasheet, curve & drawing →LONGWELL 250mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V IP55, 432 W, Low Noise, for Industrial Ventilation, AHU, FFULONGWELL 250mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V IP55, 432 W, Low Noise, for Industrial Ventilation, AHU, FFU230 V3500rpmECView & InquireLONGWELL 55mm DC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, Low Noise, for HVAC Systems, Cold Storage, Air PurifiersLONGWELL 55mm DC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, Low Noise, for HVAC Systems, Cold Storage, Air PurifiersView & InquireLONGWELL 560mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, for AHU, Cold Storage, Air PurifiersLONGWELL 560mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, for AHU, Cold Storage, Air PurifiersView & Inquire

Related for the same application

LONGWELL 4mm EC Industrial Fan, Industrial Ventilation Fan, 120V, Low Noise, for AHU, FFU, Fan Coil UnitsLONGWELL 4mm EC Industrial Fan, Industrial Ventilation Fan, 120V, Low Noise, for AHU, FFU, Fan Coil Units120V2300RPM-3000RPMView & InquireLONGWELL 200mm DC Centrifugal Blower Fan, Industrial Centrifugal Fan, 220VLONGWELL 200mm DC Centrifugal Blower Fan, Industrial Centrifugal Fan, 220V4in220V4000rpmView & InquireLONGWELL 355mm EC Plug Fan, EC Centrifugal Blower Fan, 230V, 520 W, for HVAC Systems, AHU, FFULONGWELL 355mm EC Plug Fan, EC Centrifugal Blower Fan, 230V, 520 W, for HVAC Systems, AHU, FFU4 in230 V4000 RPMView & InquireLONGWELL 500mm AC Axial Fan, Industrial Axial Ventilation Fan, for HVAC Systems, Cold Storage, Air PurifiersLONGWELL 500mm AC Axial Fan, Industrial Axial Ventilation Fan, for HVAC Systems, Cold Storage, Air PurifiersView & InquireLONGWELL 450mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V, for HVAC Systems, Cold Storage, Air PurifiersLONGWELL 450mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V, for HVAC Systems, Cold Storage, Air PurifiersView & InquireLONGWELL EC Centrifugal Blower Fan, Industrial Centrifugal Fan, 220V, Galvanized Steel, for AHU, FFU, Floor HeatingLONGWELL EC Centrifugal Blower Fan, Industrial Centrifugal Fan, 220V, Galvanized Steel, for AHU, FFU, Floor Heating4 in220 V4000 RPMView & InquireLONGWELL 133mm AC Forward Curved Centrifugal Blower, Forward Curved Blower Fan, 230V, Low Noise, for Cold Storage, Air Purifiers, HVAC Systems – LWFA-133LONGWELL 133mm AC Forward Curved Centrifugal Blower, Forward Curved Blower Fan, 230V, Low Noise, for Cold Storage, Air Purifiers, HVAC Systems – LWFA-133230V4000rpmAC Capacitor motorView & InquireLONGWELL LWBE3G225-092NU-17 EC Backward-Curved Centrifugal Fan — Ø225 mm Impeller, 115 V, Without housing / bracketLONGWELL LWBE3G225-092NU-17 EC Backward-Curved Centrifugal Fan — Ø225 mm Impeller, 115 V, Without housing / bracket92 mm1359.6 m³/h115 VDatasheet, curve & drawing →LONGWELL 250mm DC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, PWM Control, for Cold Storage, Air Purifiers, HVAC Systems – LWDC-250MMLONGWELL 250mm DC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, PWM Control, for Cold Storage, Air Purifiers, HVAC Systems – LWDC-250MM24VDC/ 48VDC4000rpmBall BearingView & InquireLONGWELL 355mm DC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 24V, Low Noise, for Cold Storage, Air Purifiers, HVAC SystemsLONGWELL 355mm DC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 24V, Low Noise, for Cold Storage, Air Purifiers, HVAC SystemsView & Inquire
Explore related
Free engineering calculators for this fan
🧭 Duct Size & Static Pressure Calculator🎯 Fan Specific Speed & Type Selector⚡ Fan Motor Amps & Power Calculator (kW, HP, FLA)📊 Fan Efficiency Calculator (Static, Total & Wire-to-Air)🧱 Fan Wall & N+1 Redundancy CalculatorAll tools →