/ Product catalogue / Commercial and industrial ventilation / Roof exhaust fans / Centrifugal / VKH / VKH 4D 400
| Unit of measurement | VKH 4D 400 | |
| Minimum supply voltage | V | 400 |
| Maximum supply voltage | V | 400 |
| Power supply frequency | Hz | 50 |
| Rated power | W | 420 |
| Unit current | A | 0.99 |
| Maximum airflow | m³/h | 3950 |
| Sound pressure level LpA at 3 m | dB(A) | 55 |
| Weight | kg | 35 |
| 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 | - | Aluminium |
| Trademark | Vents |
| Model | VKH 4D 400 |
| Type of drive installed | External MSD or VSD |
| Type of heat recovery system | None |
| Nominal flow rate (m³/s) | 0.559 |
| Nominal external pressure (Pa) | 348 |
| Maximum external leakage rates (%) | 2.7 |
| Static efficiency (%) | 51.5 |
| Declared typology | NRVU UVU |
| Effective electric power input (kW) | 0.385 |
| Sound power level (dB(A)) | 72 |
| H | H1 | A | B | C | Ød | ØD |
|---|---|---|---|---|---|---|
| 376 | 415 | 625 | 620 | 450 | 11 | 438 |
