CRD Rectangular Duct Fan
Centrifugal fan series for pressurised air transfer in industrial duct applications.
Product Features
- General
It can be produced up to 50,000 m³/h capacity.
- General
It has radial backward-curved blades for high efficiency.
- General
The fan casing is made of galvanized sheet steel and is self-flanged.
- General
The motor is outside the airflow and can operate continuously at 120°C.
- General
It is suitable for operation in the temperature range -20°C / +120°C.
- Motor
The motor is IP55 protected, IE2/IE3 high efficiency, fully enclosed, with self-lubricating bearings and F insulation class.
- Motor
A protected external electrical junction box is provided for easy connection.
- Motor
It is 400V-50Hz as standard and suitable for use with a frequency converter.
Where is it used?
Model Technical Data
Nominal airflow alone is not a selection criterion. Verify the final model together with the required pressure and duty point in Fan Selection.
| Model | Nominal airflow | Voltage | Motor power | Speed | Current | Sound |
|---|---|---|---|---|---|---|
| CRD 31-4T | 2,400 m³/h | 400V-50Hz | 0.37 kW | 1,370 rpm | 1.2 A | 65 dB(A) |
| CRD 35-4T | 3,600 m³/h | 400V-50Hz | 0.55 kW | 1,430 rpm | 1.4 A | 67 dB(A) |
| CRD 40-4T | 5,000 m³/h | 400V-50Hz | 0.75 kW | 1,430 rpm | 1.87 A | 68 dB(A) |
| CRD 45-4T | 7,800 m³/h | 400V-50Hz | 1.5 kW | 1,440 rpm | 3.34 A | 73 dB(A) |
| CRD 50-4T | 10,600 m³/h | 400V-50Hz | 2.2 kW | 1,445 rpm | 4.83 A | 75 dB(A) |
| CRD 56-4T | 13,000 m³/h | 400V-50Hz | 3 kW | 1,445 rpm | 6.4 A | 76 dB(A) |
| CRD 63-4T | 18,000 m³/h | 400V-50Hz | 5.5 kW | 1,455 rpm | 11 A | 77 dB(A) |
| CRD 71-4T | 26,000 m³/h | 400V-50Hz | 11 kW | 1,470 rpm | 21.2 A | 80 dB(A) |
Source: Vensis Fan Selection Suite. Product and motor configurations must be verified for the ordered model.
Frequently Asked Technical Questions
What is CRD?
Centrifugal fan series for pressurised air transfer in industrial duct applications. Sub-models in this product family are listed on this page from the Vitlo product database.
How do I select the right model?
Along with the required airflow, system pressure, operating conditions and any special safety requirements must be defined. The duty point should then be verified in Fan Selection.
Why are the technical table and selection tool used together?
The product page provides clear technical context, while Fan Selection verifies the model and duty point.
Let’s select the right fan for your project.
Share airflow, pressure and application conditions; we will evaluate the appropriate series and model.