/ Product catalogue / Commercial and industrial ventilation / Axial fans / Inline / VKF / VKF 4E 250| Unit of measurement | VKF 4E 250 | ||
| Connected air duct size | mm | 250 | |
| Phases | - | 1 | |
| Minimum supply voltage | V | 220 | |
| Maximum supply voltage | V | 240 | |
| Power supply frequency | Hz | 50 | 60 |
| Rated power | W | 50 | |
| Unit current | A | 0.22 | |
| Maximum airflow | m³/h | 800 | |
| Rotation speed at 50hz | - | 1380 | |
| Sound pressure level LpA at 3 m | dB(A) | 38 | |
| Weight | kg | 4 | |
| Transported air temperature (max) | °С | 60 | |
| Transported air temperature (min) | °С | -30 | |
| Ingress protection rating | - | IPX4 | |
| Ingress protection rating of the drive | - | IP54 | |
| Impeller material | - | Coated steel | |
| Trademark | Vents |
| Model | VKF 4E 250 |
| Type of drive installed | External MSD or VSD |
| Type of heat recovery system | None |
| Nominal external pressure (Pa) | 55 |
| Maximum external leakage rates (%) | 2.7 |
| Static efficiency (%) | 8.7 |
| Declared typology | NRVU UVU |
| Effective electric power input (kW) | 0.055 |
| Sound power level (dB(A)) | 75 |
| ∅D | ∅D1 | ∅D2 | ∅d | B | L |
|---|---|---|---|---|---|
| 260 | 286 | 306 | 7 | 340 | 150 |
