News
KWL EC 70: New decentralised ventilation unit with second room connection
With the new KWL EC 70, we are launching a compact, decentralised ventilation solution that can do more: Thanks to the optional second room connection, the unit can be used flexibly in entire residential units.
More informationHelios Portfolio
Exhibition dates
We are on tour
Experience our latest innovations and highlights from our product range. Or get into conversation with our ventilation experts over a light refreshment. We are represented for you at all important industry meetings throughout the year and look forward to welcoming you at one of our trade fair stands.
The next events
light + building
08.03.2026 – 13.03.2026
Frankfurt a. M., DE
AMW 280/2
AMW 280/2
MEDIUM PRESSURE AXIAL FAN 1-PH 230 V, 50 Hz TK speed controllable
Ref.-No. 02255
Features
Medium pressure axial fan with cylindrical duct casing, flanges on both sides, direct driven. Long duct casing from sheet steel, enclosing impeller and motor, flanges on both sides with hole pattern to DIN 24155 Pt.3 Axial impeller with 14 aerodynamically profiled blades from polymers. Dynamically balanced to DIN ISO 1940-1, class 6.3 for low-vibration operation. Totally enclosed, AC condenser motor, maintenance-free, with built-in thermal contacts, speed controllable by voltage reduction, with low-noise sealed for life ball bearings, not reversible.Additional data and accessories
Technical Data
General Information
| Ref.-No.: | 02255 |
|---|---|
| Type: | AMW 280/2 |
| Flow rate free-blowing: | 3970 m³/h |
| Speed control: | TRAFO / ELECTRIC |
| RPM: | 2755 min-1 |
| Number of poles: | 2 |
| Voltage: | 230 V , 1 ph , 50 Hz |
| Rated current (FLC) uncontrolled: | 3.2/4.3 A |
| Nominal power: | 700 W |
| Max. air flow temperature (controlled): | 40 °C |
| Max. air flow temperature (uncontrolled): | 60 °C |
| IP protection category: | 54 |
| PRODUCT_DETAILPAGE_wheel_diameter: | 280 mm |
| Weight: | 15,50 kg |
| Wiring diagram no.: | 967,1 |
Acoustic data
| Case breakout | 59 dB(A) in 4 m |
|---|
Quicklinks
Additional data and accessories
Downloads – Catalogues, brochures, certificates & Co.
On this page you will find all our promotional PDF documents. These include catalogues and flyers, certificates and approvals.
Software
Here you will find configuration tools, software updates and current firmware versions for Helios products with manual update function. For our planning, design and product selection software offerings, visit the Helios ToolBox.
Installation instructions and data sheets
Here you will find installation instructions and data sheets for our fans and accessory components.





















