Fans
Fans R2E250-RB06-01 Centrifugal Case Fan 250mm 230V 2750/3100rpm Special Curve
A 250 mm centrifugal fan runs at 2750 rpm on 50 Hz or 3100 rpm on 60 Hz, drawing 250 W to 390 W from a 230 V supply with a 5 µF capacitor
- 230 V single-phase operation suits industrial mains power
- 2750 rpm at 50 Hz and 3100 rpm at 60 Hz deliver strong airflow
- Backward-curved impeller reaches 35000 m³/h without a scroll housing
- Speed controllable from 0 to 100 % via analog or serial interface
- Steel housing and external-rotor motor rated for -25 °C to 70 °C ambient range
Industrial centrifugal fan for mains-powered airflow
This 250 mm backward-curved centrifugal fan runs directly from 230 VAC single-phase mains at 50 or 60 Hz. It targets integrators building rack enclosures, telecom cabinets or industrial chassis that need high-volume air intake without a scroll housing. The external-rotor motor keeps the assembly compact while delivering up to 35000 m³/h of airflow.
Speed and power define the operating point
At 50 Hz the motor spins at 2750 rpm drawing 1.1 A and 250 W; at 60 Hz it reaches 3100 rpm with 1.71 A and 390 W. A 5 µF 450 VDB capacitor is required for each frequency. Starting current peaks at 3.15 A on 50 Hz and 3.0 A on 60 Hz, so the supply and protection must handle that inrush.
Mounts in any orientation with no scroll needed
The backward-curved impeller works without a volute, simplifying ducting and saving depth inside the cabinet. Ambient range spans -25 °C to 70 °C at 50 Hz and -25 °C to 55 °C at 60 Hz. Full 100 % speed control is available via analogue or serial interface, but the builder must provide the controller, capacitor and appropriate over-current protection.
Highlights
- 230 V single-phase operation suits industrial mains power
- 2750 rpm at 50 Hz and 3100 rpm at 60 Hz deliver strong airflow
- Backward-curved impeller reaches 35000 m³/h without a scroll housing
- Speed controllable from 0 to 100 % via analog or serial interface
- Steel housing and external-rotor motor rated for -25 °C to 70 °C ambient range
Specifications
No published specifications for this item yet.
Questions about this item
What airflow can I expect from the 2750/3100 rpm speeds once the fan is installed?
The impeller is rated for up to 35000 m³/h at those speeds; actual airflow in your chassis will depend on ducting and back-pressure.
How does the 230 V AC single-phase supply limit speed control options?
The motor runs directly on 230 VAC at 50 or 60 Hz and supports 100 % speed control via analog or serial interfaces.
What mounting provisions does the 250 mm steel housing need?
The backward-curved impeller does not require a scroll housing, so the unit can be bolted to any flat panel or duct flange that matches its bolt pattern.
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