The R3G250-RU27-81 from EBM-Papst is a centrifugal fan with backward-curved blades, developed for demanding railway applications. The fan combines a RadiCal impeller with an M3G084-CF type EC motor, delivering an impressive airflow of up to 2,080 m³/h. The housing is made of cast aluminum and is designed to withstand harsh operating conditions.
The product complies with railway standards EN50155, EN45545-2 (HL3), and EN61373 (Cat. 1B), making it a reliable choice for rolling stock and rail-bound vehicles.
- Voltage: 26 V DC (range 16–32 V DC)
- Power: 410 W, current draw 15.8 A
- Airflow: up to 2,080 m³/h at 3,860 rpm
- Protection class: IP24KM (motor), IP6K9K (electronics)
- Soft start, current limit protection, and reverse polarity protection
- Halogen-free cable adapted for railway use (EN45545)
- Sealed ball bearings for long operational reliability
- Cast aluminum housing, painted black
At Reserv, we stock original EBM-Papst parts for quick delivery. You can be sure that you will receive the correct component — approved, genuine, and ready to install.
Technical specifications
Datasheet (PDF) - download| Product attribute | Value |
|---|---|
| Airflow at 0 Pa | 2080 m³/h |
| Speed | 3860 rpm |
| Power | 410 W |
| Voltage | 26 V DC VAC |
| Motor frame | The fan is designed for railway applications and complies with standards EN15085-1 (CPC3), EN45545-2 (HL3), EN50155, and EN61373 (Cat. 1B). The mounting position is with the shaft horizontal or the rotor facing downwards; mounting with the rotor facing upwards is possible upon request. Fastening is done via prepared threaded holes for self-tapping M4, M5, and M6 screws. An accessory, an inlet ring (part no. 96420-2-4013), is available but not included in the delivery. |
| Casing | cast aluminum, painted black |
| Impeller | The fan wheel is a RadiCal impeller with backward-curved blades and a single-sided inlet, with a size of 250 mm. It consists of 7 blades made of PA plastic with a black painted metal plate, and the rotor surface is also painted black. The airflow is a maximum of 2080 m³/h at free flow and a nominal speed of 3860 rpm. The direction of rotation is clockwise when looking at the rotor. |
| Bearing type | sealed bearings |
| IP class | IP24KM (motor), IP6K9K (electronics) |
| Motor protection | thermal overload protection for electronics |
| Motor code | M3G084-CF |
| Rotation direction | clockwise, looking towards the rotor |
| Motor type | The motor is an EC motor (electronically commutated) type M3G084-CF with a nominal voltage of 26 V DC and a voltage range of 16–32 V DC. The power consumption is 410 W at nominal data, and the current draw is 15.8 A. The motor has an IP24KM protection class and insulation class B. Features include soft start, current limit, temperature derating, overvoltage detection, reverse polarity protection, and thermal overload protection for the electronics. |
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