Airflow and pressure
The centrifugal impeller moves air through ductwork. Use the fan curve to check the airflow available at the pressure your duct system needs.
Commercial & Residential | Supply & Extract | 1-phase
Ducted ventilation with a 100 mm connection.
Working with 100 mm circular ductwork? Blauberg CENTRO 100 lets you position the fan along the duct route, away from the occupied space. It can supply outdoor air or extract stale air as part of a designed ventilation system, with wall or ceiling brackets included.
Maximum airflow is 250 m³/h (69 l/s). Check the CENTRO 100 fan curve at your required system pressure, then use the dimensions and electrical data below to complete the selection.

The centrifugal impeller moves air through ductwork. Use the fan curve to check the airflow available at the pressure your duct system needs.
CENTRO 100 connects to 100 mm circular ductwork. Check the fan dimensions and required duty before confirming the installation.
Install in any mounting position using the fixing brackets supplied for wall or ceiling mounting. Provide access for inspection and maintenance.
The 1-phase external rotor motor includes ball bearings and integrated thermal protection with automatic restart. The impeller is dynamically balanced.

For an office refurbishment, washroom extract or residential ventilation project, the connection size is a useful starting point. CENTRO 100 combines that 100 mm connection with a centrifugal impeller and maximum airflow of 250 m³/h. Check its fan curve against the resistance of the complete duct run to confirm the airflow your installation will receive.
View CENTRO 100 technical dataA ceiling void or service area can keep the fan clear of the room layout. Use the supplied brackets, follow the airflow arrow on the casing and leave access to the terminal box and fan cover. The 2.08 kg unit can be mounted in any position in accordance with the installation guide.
View CENTRO 100 technical data

For a contractor asking for a 100 mm inline fan, CENTRO 100 gives you a specific starting point: 250 m³/h maximum airflow, an 80 W motor and brackets included. Confirm the required airflow at system pressure before quoting. For a replacement, check the available space and electrical supply as well as the duct diameter.
View CENTRO 100 technical data
For a home refurbishment or a small commercial space, the fan can sit along the duct route while the room uses a separate grille. CENTRO 100 can supply outdoor air or extract stale air, according to the system design. Agree the required airflow and sound level with your installer, and keep the fan accessible for servicing.
Talk to us about your projectThe 1-phase AC motor can be speed controlled using a compatible external thyristor controller or autotransformer, supplied separately. Ball bearings and a dynamically balanced impeller support continuous operation. Thermal overload protection has automatic restart; isolate the electrical supply before inspection or maintenance.
The CENTRO 100 fan and wall or ceiling mounting brackets. Select ductwork and any external speed controller to suit the installation.
Leave access for inspection and cleaning. The thermal protection has automatic restart: isolate the electrical supply before maintenance and follow the user guide.

Use the required airflow and total system resistance to check the fan curve. Bends, grilles, filters and duct length affect the airflow available; the catalogue maximum is not the delivered airflow in every installation.
| Specification | CENTRO 100 |
|---|---|
| Model | CENTRO-100 |
| Duct connection | 100 mm |
| Maximum airflow | 250 m³/h (69 l/s) |
| Electrical supply | 1-phase |
| Frequency | 50-60 Hz |
| Power | 80 W |
| Current | 0.34 A |
| Speed | 2820 rpm |
| Sound pressure at 3 m | 40 dBA |
| Transported air temperature | -25 to +55 °C |
| Unit ingress protection | IPX4 |
| Motor ingress protection | IP44 |
| Weight | 2.08 kg |
Sound pressure is the catalogue figure at 3 m. Installed sound depends on duty, ductwork and installation. Match the supply to the rating label on the supplied fan.

| Specification | CENTRO 100 |
|---|---|
| D - duct connection | 100 mm |
| D1 | 250 mm |
| B | 270 mm |
| L - overall length | 230 mm |
| L1 | 30 mm |
| L2 | 27 mm |
| L3 | 30 mm |
The drawing identifies D, D1, B, L, L1, L2 and L3; the table gives the dimensions for this model. Allow additional room for connections and maintenance. Ask technical support for the model performance curve and acoustic data when finalising selection.
Need to confirm the duty? Share the required airflow, system pressure and installation details with Blauberg UK technical support.
| EAN Number | 5060407915203 |
|---|---|
| Impeller Type | Centrifugal |
| Motor Type | AC |
| Electrical Supply | 1 Phase 220/250 50/60Hz |
| Size | 100mm |
| Maximum Airflow Rate (l/s) | 69 |
| Maximum Airflow Rate (m3/h) | 250 |
| Duct Connection Size | 100mm Dia |