Data Sheet Mb 1R, Sizes 250–355 (Low Noise)
R-RBK External Fan IP66
Information the External Fan
The R-RBK external fan stands out for its low-noise operation while delivering high air volume and is Made in Germany. Its gray cast iron motor ensures maximum durability and stability in IP66 protection class.
The fan units are available in sizes 250 to 355 and can be supplied with special voltages and custom configurations, such as:
- Drip protection
- Thermistors (cold conductor)
- Dust-proof bearings
- Standstill heating band
Multivolt Options (+/- 5 %)
- 3-Phasen 220–290 V Δ 50 Hz
- 3-Phasen 220–333 V Δ 60 Hz
- 3-Phasen 380–500 V Y 50 Hz
- 3-Phasen 380–575 V Y 60 Hz
Features and Construction
These external fans feature very quiet radial impellers that ensure high air volume. Housings and adapters are made from 2.5 mm gray-primed steel by default. Custom colors and coatings are available on request.
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Technical references
Can the external fan also be supplied in special dimensions or configurations?
We can manufacture the external fan according to your specifications starting from just 1 piece. Please use our inquiry datasheet for this purpose.
What is the delivery time?
Standard sizes can be ordered in small quantities from stock. Custom-made external fans generally have a delivery time of 3–4 weeks.
Can I get the external fans with a finished coating?
In the standard version, our external fan housings are delivered with a gray primer. On request, they can also be powder-coated in almost any common RAL color. Alternatively, manufacturing in stainless steel is also possible.
What supply voltage can I use to operate the external fans?
Most of our external fan types have a multi-voltage connection of 346–525 V, 50 Hz or 380–575 V, 60 Hz. Sizes 63–225 even include a single-phase connection.
Additional special voltages are available under the “Special Versions” section.
Do you have specific questions or requests?
Please contact us directly via our contact form. You can find the responsible representative under Contact at the top right of our website.