The RG125-19/18NH from EBM-Papst is a DC-powered centrifugal fan with backward-curved blades, designed for compact and efficient air handling. The fan measures 180 × 180 × 40 mm and delivers up to 136 m³/h at free air flow. It is powered by an electronic motor with a nominal voltage of 48 V DC and a wide voltage range of 36–56 V.
With radial discharge and axial air intake, the RG125-19/18NH is ideal for control cabinets, medical equipment, and industrial systems where space is limited but airflow requirements are high. Optional mounting position provides great flexibility during installation.
- Voltage: 48 V DC (range 36–56 V)
- Airflow: up to 136 m³/h
- Maximum static pressure: 450 Pa
- Speed: 4,000 rpm
- Power: 18.7 W / 390 mA
- Bearing type: ball bearing
- Motor protection: reverse polarity protection and automatic restart upon locked rotor
- Connection: 310 mm cable
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Technical specifications
Datasheet (PDF) - download| Product attribute | Value |
|---|---|
| Airflow at 0 Pa | 136 m³/h |
| Speed | 4000 rpm |
| Power | 18.7 W |
| Voltage | 48 V DC VAC |
| Motor frame | The unit has dimensions of 180 × 180 × 40 mm and weighs 740 g. Mounting is done via the flanges with ISO 4762 M4 screws, degreased and without a washer. The maximum tightening torque during assembly is 70 Ncm in all corners. The mounting position is optional with regard to the shaft's orientation. |
| Casing | mixed media, square |
| Impeller | The fan impeller is a mixed-material centrifugal blower wheel with axial air intake and radial discharge. At the nominal operating point (4000 rpm, free airflow), the fan delivers a maximum airflow of 136 m³/h and a maximum static pressure of 450 Pa. The direction of rotation is clockwise when viewed from the rotor side. |
| Bearing type | ball bearing |
| Motor protection | automatic restart at locked rotor |
| Motor code | RG125-19/18NH |
| Rotation direction | clockwise |
| Motor type | The motor is a DC electronic motor with a nominal voltage of 48 V and a voltage range of 36–56 V. With free airflow and nominal voltage, the motor consumes 18.7 W and 390 mA. The motor is equipped with reverse polarity protection via a rectifier diode and automatic restart in case of a locked rotor. Protection class III according to applicable standards. |
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