The 612N/39HH-220 from EBM-Papst is a tubeaxial DC fan with an alarm function via an open collector, designed for reliable and energy-efficient cooling in electronics and industrial equipment. The fan measures 92 × 92 × 25.4 mm and delivers up to 91 m³/h at free air flow. With ball bearings and a compact plastic housing, it is built for a long and reliable service life.
Thanks to its optional mounting position and built-in protection against locked rotor, this fan is ideal for control cabinets, servers, and other sensitive electronics where stable air cooling and an alarm function are required.
- Voltage: 12 V DC (range 8–15 V)
- Airflow: up to 91 m³/h
- Maximum static pressure: 47 Pa
- Speed: 3,000 rpm
- Power: 2.5 W, rated current 208 mA
- Sound pressure: 35 dB(A)
- Bearing type: ball bearing
- Alarm output: open collector (Go/NoGo signal)
- Protection: locked rotor with automatic restart, reverse polarity via rectifier diode
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Technical specifications
Datasheet (PDF) - download| Product attribute | Value |
|---|---|
| Airflow at 0 Pa | 91 m³/h |
| Speed | 3000 rpm |
| Power | 2.5 W |
| Voltage | 12 V DC VAC |
| Motor frame | The fan is mounted with M4 screws according to ISO 4762, degreased and without washers. The maximum torque for mounting is 40 Ncm at the cable outlet corner and 60 Ncm at the other corners. The mounting position for the motor shaft can be arbitrary. |
| Casing | plastic, square |
| Impeller | The fan impeller is made of plastic and is part of a 92 x 92 x 25.4 mm fan. At 3000 rpm and free airflow, the impeller delivers a maximum airflow of 91 m³/h and a maximum static pressure of 47 Pa. The airflow is directed out over the struts. |
| Bearing type | ball bearing |
| Rotation direction | counterclockwise |
| Motor type | The motor is a DC motor with a nominal voltage of 12 V and a voltage range of 8–15 V. Power consumption at free airflow is 2.5 W with a rated current of 208 mA. The motor has built-in locked rotor protection with automatic restart as well as reverse polarity protection via a rectifier diode. The direction of rotation is counter-clockwise when viewed from the rotor side. |
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