The R4E250-RA01-05 from EBM-Papst is a RadiCal centrifugal fan with backward-curved blades, designed for demanding ventilation and air handling applications. With a 250 mm impeller and an airflow of up to 775 m³/h, it delivers high performance in a compact format. IP44 protection makes it suitable even for tougher operating environments.
The fan is ideal for air handling units, heat recovery systems, and industrial ventilation where consistent operation and low noise levels are important requirements. Thanks to RadiCal technology and the fiberglass-reinforced PA6 impeller, high efficiency is achieved with minimal noise.
- Airflow: up to 775 m³/h (free air, 50 Hz)
- Voltage: 230 V AC, 50/60 Hz
- Power: 47 W (50 Hz) / 53 W (60 Hz)
- Speed: 1,350 rpm (50 Hz) / 1,450 rpm (60 Hz)
- Sound pressure level: 52 dB(A)
- Protection class: IP44
- Ball bearings for long service life
- Internal thermal overload protection (TOP)
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Technical specifications
Datasheet (PDF) - download| Product attribute | Value |
|---|---|
| Airflow at 0 Pa | 27,364 cu ft/hr m³/h |
| Speed | 1350/1450 rpm |
| Power | 47/53 W |
| Frequency | 50/60 Hz |
| Voltage | 230V AC VAC |
| Motor frame | The fan is mounted with the shaft horizontally or with the rotor downwards as the standard installation position; mounting with the rotor upwards is possible on request. Protection class IP44 applies depending on the installation position and location according to EN 60034-5. There are condensate drain holes on the rotor side. The maximum screw clearance is 6 mm and an accessory inlet cone (part no. 96359-2-4013) is available but not included in the delivery. |
| Casing | RadiCal centrifugal fan, 250 mm fan size, rotor with black painted surface |
| Impeller | The fan impeller is a backward-curved single-inlet impeller (RadiCal) with 7 blades made of PA6 plastic reinforced with fiberglass. The rotor surface is painted black. The fan size is 250 mm and the airflow is up to 775 m³/h at free air and 50 Hz. The fan impeller is designed for high efficiency and low noise levels. |
| Bearing type | ball bearing |
| IP class | IP44 |
| Motor protection | Thermal overload protector (TOP), internally connected |
| Motor code | M4E068-CF |
| Rotation direction | clockwise, looking towards the rotor |
| Motor type | The motor is a single-phase AC motor of type M4E068-CF with a rated voltage of 230 V AC and a frequency of 50/60 Hz. The speed is 1350 rpm at 50 Hz and 1450 rpm at 60 Hz. Power consumption is 47 W at 50 Hz and 53 W at 60 Hz. Insulation class B and operating mode S1. The motor is equipped with an internal thermal overload protection (TOP) and ball bearings for long service life. |
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