355-102PS-09 Backward Curved Centrifugal Fans

LONGWELL 102mm EC Backward Curved Centrifugal Fan, Industrial Centrifugal Blower, 230V IP55, 4171.5 m³/h Airflow, 906.4 Pa Static Pressure – LWFE3G355-102PS-09

Air Flow 4171.5 m³/h

Static Pressure 906.4 Pa

Inlet Ø 102 mm

Voltage 230 V

ISO / CE / UL / ETL Factory & Test Lab OEM / ODM ebm-papst alternative

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

Specifications

Noise: 75 dB(A)
Protection: IP55
Motor: EC
Speed: 2550 RPM
Power Input: 520 W
Impeller: Aluminum Alloy
Frequency: 50/60
Ambient Temp: -25℃～+60℃

Category: Backward Curved Centrifugal Fans Tags: Backward Curved Centrifugal Fan, EC Motor, Industrial Ventilation

CategoryBackward Curved Centrifugal Fans

TagsBackward Curved Centrifugal Fan EC Motor Industrial Ventilation

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

Name *

Work Email *

Phone/ WhatsApp *

Estimated order quantity

Message

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 →

Description
Additional information

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	520W
Speed	2550RPM
Static Pressure(Max)	906.4Pa
Air Flow(Max)	4171.5m³/h
Noise	75dB(A)
Min.ambient Temp	-25℃
Max.ambient Temp	60℃

Curves

355-102PS-09 Backward Curved Centrifugal Fans Curve

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

Trusted by top Brands

LONGWELL Trusted by top Brands

Additional information

Insulation Class	F
type	EC
speed	2550
Bearing	Maintenance-free ball bearings
frequency	50/60
current	3.1
sound power	520.0
noise	75
Min.ambient Temp Max.ambient Temp	-25℃～+60℃
sound pressure	906.4
airflow	4171.5
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.