Suzhou Blauberg Motoren Technology Co., Ltd. is one of the leading manufacturers and suppliers of blauberg bl-b225g-ec-01 225mm ec backward curved centrifugal fan in China. Welcome to buy bulk high quality customized products made in China here and get quotation from our factory. For price consultation, contact us.
Product Overview
BL-B225G-EC-01 is a single-phase EC backward curved centrifugal fan with a 225 x 225 x 99 mm envelope. Its EC motor uses a 230 VAC nominal supply and supports 0-10 VDC or PWM speed control.
Basic Data
| Model | BL-B225G-EC-01 |
|---|---|
| Product Type | EC Backward Curved Centrifugal Fan |
| Phase | 1~ |
| Nominal Voltage | 230 VAC |
| Operating Voltage Range | 184-276 VAC |
| Frequency | 50/60 Hz |
| Nominal Speed | 3250 +/-5% RPM |
| Nominal Input Power | 170 W |
| Nominal Input Current | 1.3 A |
| Sound Level | 81 dB(A) |
| Ambient Operating Temperature | -25 to 60 degrees C |
Nominal data is tested in free air according to the product specification.
Technical Specifications
| Fan Size | 225 x 225 x 99 mm |
|---|---|
| Motor Rotor Size | 72 mm diameter |
| Impeller Material | PA66+GF |
| Number of Blades | 7 |
| Rotation | Clockwise, viewed toward the rotor |
| Degree of Protection | IP55 |
| Insulation Class | Class B |
| Operating Humidity | 5%-90% RH |
| Installation Position | Any |
| Operating Mode | Continuous operation (S1) |
| Bearing | Maintenance-free ball bearing |
| Cable Length | 500 +/-20 mm |
| Conformity | CCC, CE, RoHS |
Key Features
- 0-10 VDC or PWM speed-control input with a maximum PWM input voltage of 10 VDC.
- 10 VDC auxiliary output, maximum 10 mA.
- Tachometer signal feedback through the U6 control lead.
- Locked-rotor, thermal, overvoltage, undervoltage and overcurrent protection.
- Soft-start operation.
Typical Applications
This fan type is typically considered for compact air-handling, ventilation and equipment-cooling assemblies that require a backward-curved EC centrifugal fan. Final suitability must be checked against the required system operating point, installation conditions and the published dimensional drawing.
Air Performance
The source curve reaches approximately 1,350 m3/h at zero pressure and approximately 1,000 Pa at zero airflow under the stated test conditions. These values are curve endpoints, not a nominal duty point.

Overall Dimensions
The overall fan envelope is 225 x 225 x 99 mm. Use the source-backed outline drawing for mounting holes, rotor dimensions, cable exits and clearances.

Wiring and Control
| Connection | Designation | Colour | Function |
|---|---|---|---|
| PE | Protective earth | Green/yellow | Protective earth |
| U1 | L | Brown | AC live |
| U2 | N | Blue | AC neutral |
| U4 | +10 V | Red | Fixed 10 VDC output |
| U5 | Speed control | Yellow | 0-10 VDC/PWM input |
| U6 | Signal feedback | White | Tachometer output |
| U7 | GND | Blue | Control-interface ground |
Follow the supplied wiring diagram and safety notes before energizing the fan.


Download
English product specification: BL-B225G-EC-01 Product Specification (PDF).
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