🔥 Get Full Catalog

Ziehl-Abegg FN040 Alternative — LONGWELL LWAE3G400

Looking for an alternative for Ziehl-Abegg FN040-4EQ.4I.A7? The LONGWELL LWAE3G400 has the same impeller diameter. Catalogue ratings, measured curves and dimensioned drawings for every model are on the LONGWELL Fan Selector; final selection is made at your duty point. Typical applications: heat pump split outdoor, commercial condenser, BESS C&I cabinet.

Reference model: Ziehl-Abegg FN040-4EQ.4I.A7 Diameter: Ø400 mm Family: FN axial → LONGWELL LWBE3G / LWAE3G / LWFC Sample: 1–3 days
Reference model
Ziehl-Abegg
FN040
FN axial · EC axial fan · Ø400 mm
→
LONGWELL series
LONGWELL
LWAE3G400
Same impeller diameter (Ø400 mm) · dimensions per LONGWELL drawing · 15–30 day production lead time

Specification Comparison

Specification Ziehl-Abegg FN040 LONGWELL LWAE3G400
Fan type EC axial fan EC axial fan
Impeller diameter Ø400 mm Ø400 mm 9 models
Airflow range 1,800–6,500 m³/h up to 5,562 m³/h
Static pressure (max) 320 Pa up to 258 Pa
Motor power (max) 850 W up to 360 W
Noise floor (Lw) 68 dB(A) from 66 dB(A) (nameplate, per model)
Voltage 200–240 V 1Φ 220–230 V 1Φ
Control input 0–10 V / PWM / Modbus / EC-Control 0–10 V / PWM / Modbus RTU (RS485)
IP rating IP54 / IP55 IP54 (per model)
Certifications CE · UL · VDE · EAC CE · RoHS
Sample lead time Per manufacturer quotation 1–3 days
Series lead time (≤500 units) Per manufacturer quotation 15–30 days
Pricing Per manufacturer quotation Quoted per project
Verify it on the LONGWELL selector: all 9 LWAE3G400 models — data, measured curves, drawings · LWAE3G400SS-5MEW-07 (largest airflow in the series) · check your own duty point · samples, MOQ and lead time

LWAE3G400 at a glance

Production Lead Time

15–30 days
Ex works for production batches. Stock standard models ship as samples in 1–3 days.

Pricing

Quoted per project
Price depends on model, voltage, control option and quantity. Sample fees are credited in full against the first production order.

Same Impeller Diameter

Ø400 mm
Same impeller diameter; confirm the mounting hole pattern and inlet ring against the LONGWELL drawing before ordering.

Installation and control: what to check

Mechanical

Mounting dimensions, inlet ring diameter, motor shaft height and terminal-box position of the LONGWELL LWAE3G400 are given on its dimensioned drawing. Compare them with the installed fan before ordering.

Electrical & control

The LONGWELL LWAE3G400 accepts a 0–10 V analog speed reference, PWM and Modbus RTU (RS485) control signals (per model; see the model datasheet). LONGWELL supplies its Modbus RTU register map with the fan so the BMS points can be re-mapped; the register addresses are not identical to the Ziehl-Abegg map.For other bus protocols, ask LONGWELL engineering for the integration options.

Performance

The measured P-Q curve of every LONGWELL model is on its model page; we check your duty point against it before quoting.

Typical Applications

The LWAE3G400 is typically specified for heat pump split outdoor, commercial condenser, BESS C&I cabinet. Common application categories include:

  • Heat pump split
  • Commercial condenser
  • BESS cabinet

Particularly suited for heat pump split outdoor and BESS C&I cabinet.

FAQ

What should I check before using LONGWELL LWAE3G400 in place of Ziehl-Abegg FN040?
The impeller diameter is the same. Confirm the mounting hole pattern, inlet ring diameter and shaft height against the dimensioned drawing on the LONGWELL LWAE3G400 model page before ordering; the available control inputs (0–10 V / PWM / Modbus RTU) and voltages are listed in the table above.
Where can I find efficiency data for LWAE3G400?
LONGWELL does not publish a single peak-efficiency figure for the LWAE3G400. The model page on the selection site gives airflow, static pressure and input power along the curve (measured where marked, nameplate-estimated otherwise), so the efficiency at your duty point follows directly; a test report for a specific model is available from engineering on request.
What is the LONGWELL lead time?
LONGWELL LWAE3G400 ships in 15–30 days for orders up to 500 units and 6–10 weeks for 1,000+ unit OEM programs. Sample units ship in 1–3 days from stocked Ø400 mm inventory.
How is LONGWELL pricing determined?
LONGWELL quotes per project. Pricing depends on quantity, voltage, IP rating, and control protocol options.
What applications is LWAE3G400 typically used for?
LWAE3G400 is typically specified for heat pump split outdoor, commercial condenser, BESS C&I cabinet. Particularly suited for heat pump split outdoor and BESS C&I cabinet.

Evaluate a LONGWELL alternative to FN040 — samples in 1–3 days

Send a quick request — model + quantity + delivery address. Sample unit ships in 1–3 days for field validation. Series production at 15–30 day lead time after PO.

Request Sample View Full Cross-Reference Table
Official Product Page
Browse the full EC Axial Fans range on longwellfans.com — request a quote on LWAE3G400 directly.
View on longwellfans.com →
Ziehl-Abegg® is a registered trademark of its owner. This page is published by LONGWELL, an independent manufacturer and is not affiliated with, endorsed by, or sponsored by Ziehl-Abegg. All performance data sourced from publicly available datasheets. All performance figures reflect specific test conditions; final selection should be confirmed by duty point, voltage/control, mounting and project validation.