CRH/ATEX Radial Roof Exproof Fan
Exproof centrifugal fan series for roof exhaust applications in explosive atmospheres.
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 roof casing is designed for rain and outdoor operating conditions.
- General
It is ex-proof as a complete device.
- General
The inlet cone is manufactured with suitable metallic material to reduce spark risk.
- General
It is suitable for operation in the temperature range -20°C / +120°C.
- Motor
The motor is IP65 protected, IE2/IE3 high efficiency, fully enclosed, with self-lubricating bearings and F insulation class.
- Motor
Depending on model, 4, 6 and 8 pole motor options are available with II 2G EEx d/e IIB/IIC T4-T3 protection ratings.
- 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 |
|---|---|---|---|---|---|---|
| CRH/ATEX 31-4T | 2,400 m³/h | 400V-50Hz | 0.37 kW | 1,425 rpm | 1.35 A | 65 dB(A) |
| CRH/ATEX 35-4T | 3,600 m³/h | 400V-50Hz | 0.55 kW | 1,410 rpm | 1.5 A | 67 dB(A) |
| CRH/ATEX 40-4T | 5,000 m³/h | 400V-50Hz | 0.75 kW | 1,430 rpm | 2.1 A | 68 dB(A) |
| CRH/ATEX 45-4T | 7,800 m³/h | 400V-50Hz | 1.5 kW | 1,440 rpm | 3.45 A | 73 dB(A) |
| CRH/ATEX 50-4T | 10,600 m³/h | 400V-50Hz | 2.2 kW | 1,440 rpm | 4.66 A | 75 dB(A) |
| CRH/ATEX 56-4T | 13,000 m³/h | 400V-50Hz | 3 kW | 1,440 rpm | 6.27 A | 76 dB(A) |
| CRH/ATEX 63-4T | 18,000 m³/h | 400V-50Hz | 5.5 kW | 1,460 rpm | 10.6 A | 77 dB(A) |
| CRH/ATEX 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 CRH/ATEX?
Exproof centrifugal fan series for roof exhaust applications in explosive atmospheres. 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.