The R3G250-RI51-01 from EBM Papst is an EC-driven centrifugal fan with backward-curved blades, designed for demanding ventilation and air handling applications. The fan delivers up to 1,200 m³/h airflow and is powered by an energy-efficient EC motor with integrated PID controller and soft start. With an IP54 protection class and robust aluminum housing, it can handle even tougher operating environments.
The fan is ideal for air handling units, industrial ventilation, and process air systems where precise control and high efficiency are crucial. Control is via 0-10 V DC, PWM, or RS-485 MODBUS-RTU.
- Airflow: 1,200 m³/h
- Voltage: 230 V AC (200–277 V), 50/60 Hz
- Power: 500 W, rated current 2.2 A
- EC motor M3G074-DF with active PFC and soft start
- RadiCal impeller made of PA plastic and galvanized steel, 7 backward-curved blades
- Protection class IP54, cast aluminum housing
- Ball bearings for long service life
- Thermal contact with automatic reset
At Reserv, you will find original parts from EBM Papst, stocked by our wholesaler for fast delivery. You can rest assured that you will receive the right product – every time.
Technical specifications
Datasheet (PDF) - download| Product attribute | Value |
|---|---|
| Airflow at 0 Pa | 1,200 m³/h |
| Speed | 3800 rpm |
| Power | 500W |
| Frequency | 50/60 Hz |
| Voltage | 230V AC VAC |
| Motor frame | The fan is designed for mounting with the shaft horizontally or with the rotor downwards; mounting with the rotor upwards is possible upon request. An accessory inlet ring (part number 96359-2-4013) is available to meet the Ecodesign requirements according to EU 327/2011. Mounting is done with screws with a maximum mounting depth of 16 mm. Condensate is drained through drainage holes on the rotor side. |
| Casing | cast aluminum, the material of the electronics enclosure |
| Impeller | The fan wheel is a RadiCal impeller with backward-curved blades and single-sided intake, with 7 blades. The material is PA plastic combined with galvanized sheet metal. The rotor surface is thick-film passivated for increased corrosion resistance. The impeller has a size of 250 mm and rotates clockwise when viewed towards the rotor. Condensate drain holes are located on the rotor side. |
| Bearing type | ball bearing |
| IP class | IP54 |
| Motor protection | Thermal cutout with automatic reset, internally connected |
| Motor code | M3G074-DF |
| Rotation direction | clockwise, looking towards the rotor |
| Motor type | The motor is an EC motor, type M3G074-DF, designed for a single-phase 230 V AC (200–277 V) 50/60 Hz mains supply. It has a power consumption of 500 W and a rated current of 2.2 A at nominal operating mode. The motor is equipped with active PFC, soft start, integrated PID controller, as well as power and current limiters. The protection class is I and insulation class B, with thermal overload protection with automatic reset. Communication is via RS-485 MODBUS-RTU and control via 0–10 V DC or PWM. |
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