LONGWELL 102mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V IP55, 4120 m³/h Airflow, 1081.5 Pa Static Pressure – LWFE3G310-102PS-03

Air Flow 4120 m³/h
Static Pressure 1081.5 Pa
Inlet Ø 102 mm
Voltage 230 V

Control input 0-10VDC/PWM,Tach output,Locked-Rotor protection,Reverse Polarity Over-voltage protection,Soft Start Protection.

Specifications
Noise
85 dB(A)
Protection
IP55
Motor
EC
Speed
2960 RPM
Power Input
700 W
Impeller
Aluminum Alloy
Frequency
50/60
Ambient Temp
-25℃~+60℃
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

Technical Description

Impeller Material Aluminum Alloy
Mode of Operation S1
Protection Class IP55
Insulation Class F
Bearing Maintenance-free ball bearings
Technical Feature Control input 0-10VDC/PWM,Tach output,Locked-Rotor protection,Reverse Polarity Over-voltage protection,Soft Start Protection.

Nominal data

Type of Voltage EC
Diameter of Rotor 102mm
Nominal Voltage 230V
Frequency 50/60Hz
Current 3.1A
Power Input 700W
Speed 2960RPM
Static Pressure(Max) 1081.5Pa
Air Flow(Max) 4120m³/h
Noise 85dB(A)
Min.ambient Temp -25℃
Max.ambient Temp 60℃

Curves

310-102PS-03 Backward Curved Centrifugal Fans Curve

Drawing

310-102PS-03 Backward Curved Centrifugal Fans drawing

Download

The Company Longwell Leading Fan and Motor Innovator Worldwide

As a leading supplier of ventilation and drive technology, LONGWELL is a highly respected engineering partner in many industries. With over than 20,000 different products, we provide the right solution for every need. And we have always worked according to the highest economic and ecological standards.

As part of the logical next step in the development of our high-efficiency BLEC MOTOR technology, we believe that industrial digitalization offers the best prospects for our customers in the future. LONGWELL already offers intelligently interconnected complete solutions that are second to none worldwide and ensure that our customers always remain that decisive step ahead.

LONGWELL Product Line

LONGWELL product line

LONGWELL Certificate

LONGWELL Certificate

Trusted by top Brands

LONGWELL Trusted by top Brands

Additional information

Insulation Class

F

type

EC

speed

2960

Bearing

Maintenance-free ball bearings

frequency

50/60

current

3.1

sound power

700.0

noise

85

Min.ambient Temp Max.ambient Temp

-25℃~+60℃

sound pressure

1081.5

airflow

4120

ac dc ec

EC

Impeller Material

Aluminum Alloy

voltage

230

Protection Class

IP55

Mode of Operation

S1

dimensions

102

ErP 2026 scope check — Regulation (EU) 2024/1834

This model's estimated electrical input power is about 713 W, which falls inside the 125 W – 500 kW band covered by Regulation (EU) 2024/1834, applicable to fans first placed on the EU market from 24 July 2026.

Compliance is determined at your duty point, not by the model alone. The same fan can meet the requirement in one project and miss it in another, because the regulation evaluates efficiency across the real operating range rather than at the best efficiency point only.

Check this model at your duty point → Request test data & documentation →

Input power is estimated from rated voltage and current for scope indication only. Final selection must be confirmed against the duty point (airflow / static pressure / voltage / control method) and project verification. See the ErP 2026 requirements guide.

More in this series

LONGWELL 102mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 400V IP55, 5150 m³/h Airflow, 1730.4 Pa Static Pressure – LWFE3G310-102PT-09LONGWELL 102mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 400V IP55, 5150 m³/h Airflow, 1730.4 Pa Static Pressure – LWFE3G310-102PT-09102 mm5150 m³/h400 VDatasheet, curve & drawing →LONGWELL 55mm Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, PWM Control, for Cold Storage, Air Purifiers, HVAC Systems – LWDC-355MMLONGWELL 55mm Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, PWM Control, for Cold Storage, Air Purifiers, HVAC Systems – LWDC-355MM4in24VDC/ 48VDC4000rpmView & InquireLONGWELL 92mm DC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 48V 0–10V/PWM Control, 505 m³/h Airflow, 412 Pa Static Pressure – LWBD3G190-092NH-07LONGWELL 92mm DC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 48V 0–10V/PWM Control, 505 m³/h Airflow, 412 Pa Static Pressure – LWBD3G190-092NH-0792 mm505 m³/h48 VDatasheet, curve & drawing →LONGWELL EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 12V PWM Control, PWM Control – LWLONGWELL EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 12V PWM Control, PWM Control – LW12V/ 24VDC/ 48VDCexternal rotor motorView & InquireLONGWELL 102mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V IP54, 2524 m³/h Airflow, 381 Pa Static Pressure – LWBA4E355-102NS-01LONGWELL 102mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V IP54, 2524 m³/h Airflow, 381 Pa Static Pressure – LWBA4E355-102NS-01102 mm2524 m³/h230 VDatasheet, curve & drawing →LONGWELL LWBE3G310-102PS-02 EC Backward-Curved Centrifugal Fan — Ø310 mm Impeller, 230 VAC, With bracketLONGWELL LWBE3G310-102PS-02 EC Backward-Curved Centrifugal Fan — Ø310 mm Impeller, 230 VAC, With bracket102 mm2869 m³/h230 VDatasheet, curve & drawing →LONGWELL LWBE3G310-102PS-16 EC Backward-Curved Centrifugal Fan — Ø310 mm Impeller, 230 VAC, With bracketLONGWELL LWBE3G310-102PS-16 EC Backward-Curved Centrifugal Fan — Ø310 mm Impeller, 230 VAC, With bracket102 mm2884 m³/h230 VDatasheet, curve & drawing →LONGWELL 102mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V IP55, 3193 m³/h Airflow, 1442 Pa Static Pressure – LWFE3G280-102PS-07LONGWELL 102mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V IP55, 3193 m³/h Airflow, 1442 Pa Static Pressure – LWFE3G280-102PS-07102 mm3193 m³/h230 VView & InquireLONGWELL 133mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 220V IP55 PWM Control, for FFU, Fan Coil Units, HVAC SystemsLONGWELL 133mm AC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 220V IP55 PWM Control, for FFU, Fan Coil Units, HVAC Systems220VEC external rotor motorView & 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 & Inquire

Related for the same application

Explore related
Free engineering calculators for this fan