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ER Series In-Line Duct Fan 25/2 M – Compact Metal Duct Fan for High Pressure Performance
The ER Series In-Line Duct Fan 25/2 M provides a powerful and reliable solution for supply and extract ventilation in circular ventilation ducts (nominal size 250 mm ). Equipped with a robust sheet steel housing and backward-curved centrifugal impellers, this fan easily overcomes high duct resistance, making it ideal for installation in complex ductwork systems.
The Highlight of the ER Series: Solid Metal Construction & High Pressure Build-Up
Combining a durable housing with efficient centrifugal technology, the ER series guarantees continuous airflow even over long duct runs or when using filters and sound attenuators. Its compact design allows for flexible installation in any mounting position.
Combining a durable housing with efficient centrifugal technology, the ER series guarantees continuous airflow even over long duct runs or when using filters and sound attenuators. Its compact design allows for flexible installation in any mounting position.
Key Product Benefits at a Glance
- ✔ High Pressure Stability: Backward-curved centrifugal impeller provides strong pressure delivery for extended duct runs.
- ✔ Robust Sheet Steel Housing: Resistant to mechanical stress and built for continuous heavy-duty operation.
- ✔ Maintenance-Free Continuous Operation: Ball-bearing external rotor motor with integrated thermal overload protection.
- ✔ Flexible Installation: Can be mounted in any orientation (horizontal or vertical) directly into the duct run.
- ✔ Speed Controllable: Fan speed can be easily adjusted using optional speed controllers or transformers.
Reliable Ventilation for Commercial & Industrial Applications
The duct fans in the ER series are used wherever powerful air delivery is required: in gastronomy, workshops, warehouses, sanitary rooms, as well as commercial supply and extract systems. Thanks to standardized spigot connections, the units fit directly into spiral ducts or flexible ducting.
| Feature | Value / Specification |
|---|---|
| Model | 25/2 M |
| Maximum Airflow | 1650 m³/h |
| Maximum Pressure | 290 Pa |
| Voltage | 230 V / 50 Hz |
| IP Rating / Protection Class | IP44 |
| Appliance Class | I |
| Sound Pressure Lp-2m | 66 dB(A) |
| Current Consumption | 0.5 A |
| Maximum Air Temperature | 60 °C |
| Colour | Black |
| Housing Material | Sheet steel, powder-coated / galvanized |
| Maximum Speed | 2500 RPM |
| Nominal Diameter / Duct Connection | 250 mm |
| Fan Features | Compact design, backward-curved impeller, speed controllable, thermal overload protection |
| Motor Type | Ball-bearing external rotor motor, insulation class B |
| Fan Type | Centrifugal in-line duct fan / axial fan |
| Weight | 4.5 kg |
Model Classifications in the ER Series:
Within the ER Series, the letters represent the following version specifications:
• "M" Models: Standard single-phase AC models designed for direct connection to external speed controllers or simple switch operations.
• "T" Models (Timer): Equipped with an integrated electronic run-on timer, allowing the fan to continue operating for a set duration after being switched off.
Package Contents
|
 |
| Image | Article | Nominal Diameter | Sound pressure | Maximum Airflow | Maximum Speed | Maximum Total Pressure | Item No. | Price |
|---|---|---|---|---|---|---|---|---|
 |
Inline duct fan 250mm ER 25/2 M – high airflow & low noise | 250 mm | 66 dB(A) | 1650 m³/h | 2500 RPM | 290 Pa | 973400 | 659,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 250mm ER 25/2 T – powerful & quiet operation | 250 mm | 66 dB(A) | 1650 m³/h | 2.500 RPM | 290 Pa | 973401 | 669,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 250mm ER 25/4 M | 250 mm | 52 dB(A) | 1000 m³/h | 1,400 RPM | 100 Pa | 973405 | 509,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 250mm ER 25/4 T | 250 mm | 52 dB(A) | 1000 m³/h | 1,400 RPM | 100 Pa | 973406 | 549,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 300mm ER 30/2 M | 300 mm | 70 dB(A) | 3,300 m³/h | 2,650 RPM | 280 Pa | 973410 | 719,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 300mm ER 30/2 T | 300 mm | 70 dB(A) | 3,300 m³/h | 2,600 RPM | 280 Pa | 973411 | 729,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 300mm ER 30/4 M | 300 mm | 49 dB(A) | 1,800 m³/h | 1,350 RPM | 125 Pa | 973415 | 549,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 300mm ER 30/4 T | 300 mm | 46 dB(A) | 1,800 m³/h | 1,350 RPM | 125 Pa | 973416 | 589,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 350mm ER 35/4 M | 350 mm | 55 dB(A) | 3,300 m³/h | 1,350 RPM | 160 Pa | 973420 | 649,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 350mm ER 35/4 T | 350 mm | 55 dB(A) | 3,300 m³/h | 1,400 RPM | 160 Pa | 973421 | 629,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 400mm ER 40/4 M | 400 mm | 62 dB(A) | 4,250 m³/h | 1,400 RPM | 200 Pa | 973430 | 729,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 400mm ER 40/4 T | 400 mm | 62 dB(A) | 4,200 m³/h | 1,400 RPM | 200 Pa | 973431 | 689,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 450mm ER 45/4 M | 450 mm | 57 dB(A) | 7,000 m³/h | 1,300 RPM | 200 Pa | 973440 | 889,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 450mm ER 45/4 T | 450 mm | 58 dB(A) | 7,000 m³/h | 1,300 RPM | 200 Pa | 973441 | 819,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 500mm ER 50/4 T | 500 mm | 62 dB(A) | 9,000 m³/h | 1,400 RPM | 230 Pa | 973450 | 1349,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
|
Duct Fan 600mm ER 60/6 T | 600 mm | 58 dB(A) | 11,300 m³/h | 900 RPM | 150 Pa | 973455 | 1179,99 € Preis inkl. 19 % MwSt. zzgl. Versandkosten |
- Amperage
- 0.5 A
- Temperature max.
- 60 °C
- Voltage
- 230 V / 50 Hz
- Air output
- 1650 m³/h
- Air pressure max in Pa
- 290 Pa
- Model
- 25/2 M
- Sound pressure
- 66 dB(A)
- Weight
- 4.5 kg
- Dimensions
- 250 mm
- Poles
- 2
- IP protection class
- IP44
- Revolutions
- 2500 RPM