Systemair K125M Centrifugal Duct Fan AC Motor - 125mm/5"
Product Description
The Systemair K125M is a centrifugal inline duct fan designed for installation in circular ducting, with minimum 25 mm spigot connections. It has backward-curved blades and an external-rotor motor, and its folded galvanised sheet-steel casing is close to airtight — making outdoor and duct-connected wet-room applications possible (corrosion class C3). It delivers up to 186 m³/h through 125 mm duct.
- Airflow up to 186 m³/h; 125 mm connection (25 mm spigots)
- Speed-controllable AC, 230 V, 1~, 50 Hz (stepless thyristor or 5-step transformer)
- Backward-curved external-rotor motor; impedance/thermal protected
- Near-airtight folded galvanised-steel casing; corrosion class C3; outdoor/wet-room capable
- Low noise; can be installed in any position; fixing bracket and screws included
- Maintenance-free and reliable
Suitable for
- Duct-mounted extract and supply, including outdoor and wet-room applications
- Commercial and domestic circular duct systems
Installation
Installs in any position using the included fixing bracket. Speed control via thyristor or 5-step transformer. Should be installed on a suitable circuit by a qualified electrician.
Specifications
| Brand | Systemair |
| Model | K125M |
| Type | Centrifugal inline duct fan |
| Duct connection | 125 mm (25 mm spigots) |
| Airflow (max) | 186 m³/h |
| Motor | External-rotor AC, speed-controllable (230 V, 1~, 50 Hz) |
| Casing | Galvanised folded sheet steel (airtight; outdoor/wet-room; corrosion class C3) |
| Protection | Impedance/thermal protected |
| Mounting | Any position; fixing bracket included |
| Warranty | 1 Year Manufacturer |
Manuals & Guides
Systemair K125M Datasheet
Delivery & Returns
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