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The Blauberg BL-B133A-EC-00 is a compact 133 mm, 230 VAC EC backward-curved centrifugal fan with a PA+GF impeller, IP55 protection, and 0-10 V/PWM speed control.
Basic Info
| Model | BL-B133A-EC-00 | Product Type | EC Backward Curved Centrifugal Fan |
| Phase | 1~ | Rated Voltage | 230 VAC |
| Frequency | 50/60 Hz | Nominal Speed | 4400 +/-5% RPM |
| Max. Input Power | 53 W | Max. Input Current | 0.38 A |
| Sound Level | 70 dB(A) | Ambient Temperature | -25 deg C to +60 deg C |
| Certification | CCC, CE, RoHS | Release Date | 10 June 2025 |
Technical Description
| Dimensions | 133 x 133 x 110 mm | Motor Size | 72 mm |
| Impeller Material | PA+GF | Number of Blades | 7 |
| Air Flow Direction | All around | Rotation | Clockwise, viewed toward rotor |
| Rotor Surface | Blue plastic spraying | Weight | 1.1 kg |
| Degree of Protection | IP55 | Insulation Class | Class B |
| Operating Mode | S1 | Bearing | Ball bearing |
| Installation Position | Any | Cooling Holes / Cut-outs | Rotor side |
| Operating Humidity | 5%-90% RH | Storage Humidity | 5%-95% RH |
| Storage Temperature | -40 to +80 deg C | Cable Length | 500+/-20 mm |
| Technical Features | 10 VDC output; 0-10 VDC/PWM control; locked rotor, thermal, over/undervoltage, overcurrent and soft-start protection | ||
| Dielectric Strength | 1800 VAC / 50 Hz, 1 s; leakage current <=10 mA | ||
Product Application
| 1 | Charging Column | 9 | Equipment Cooling Project |
| 2 | Kitchen Smoke Exhaust System | 10 | Ventilation Unit Project |
| 3 | FFU Project | 11 | AHU Project |
| 4 | Computer Room Cooling | 12 | Air Purifier Project |
| 5 | Rail Transit Air-Conditioning | 13 | Heat Exchanger Project |
| 6 | Electrical Appliances | 14 | Telecom Container Project |
| 7 | FanGrid Project | 15 | Data Center Cooling Project |
| 8 | Ventilation Equipment Project | 16 | Industrial Cooling System |
Air Performance
Air performance is measured according to AMCA 210 / GB 1236 installation category A. Values are valid under the specified measuring conditions and may vary with installation. For deviations from the standard configuration, verify the parameters on the installed unit.
Overall Dimensions
| 1 | AC Cable PVC 3 x AWG20 |
| 2 | DC Cable PVC 4 x AWG24 |
Electrical Connection
| Line | Connection | Designation | Colour | Function |
|---|---|---|---|---|
| Power Line | PE | PE | Green / Yellow | Protective earth |
| Power Line | U1 | L | Brown | Live wire |
| Power Line | U2 | N | Blue | Neutral wire |
| Control Line | U4 | +10V | Red | External output +10 VDC |
| Control Line | U5 | Speed Control | Yellow | 0-10 V and PWM-compatible input; maximum PWM value 10 V |
| Control Line | U6 | Signal Feedback | White | RPM output signal line, 2 pulses per revolution |
| Control Line | U7 | GND | Blue | Ground |
Full speed is obtained by shorting the red +10 VDC wire and yellow VSP wire. For 0-10 VDC control, the fan starts above 1.0 VDC and stops below 0.5 VDC. PWM control uses a recommended 10 VDC amplitude and 1-10 kHz frequency; the fan starts above 10% duty and stops below 5% duty. A 10 kOhm potentiometer may also be used.
The fan provides a speed output signal. The Vfg supply and pull-up resistor are connected by the customer. Vfg = 3.3-30 VDC; R >= 1000 x Vfg Ohm.
Note
Connect the power and control lines strictly according to the wiring diagram to prevent damage to the fan.
Do not connect the white signal wire directly to the red signal wire or an external DC power supply.
If the fan does not operate after starting, check the speed-control input voltage. To prevent injury caused by sudden fan start-up, do not touch the impeller or rotor after power is applied.
The fan takes several seconds to start after power-on. Do not touch the impeller or rotor while energized or operating at low speed.
Before switching on the power, verify that the motor is installed securely to prevent motor damage and personal injury.
Do not pull the power cord forcefully. A damaged power cord must be replaced by the manufacturer to avoid electric shock.
Do not drop or impact the motor.
Do not wash or flush the motor, as reduced insulation performance may cause leakage and personal danger.
For customized operation outside the agreed working conditions, consult Blauberg and confirm suitability before use.
After the fan stops, the motor casing may remain hot for a short time. Take precautions to prevent burns.
During installation, ensure that no debris enters the casing or other housings; clean the interior if necessary.
Before installation and operation, rotate the rotor by hand and confirm there is no collision, interference or jamming.
The motor is part of the fan and must not be operated without an impeller or load.
Store repackaged units in a clean, ventilated warehouse at -40 deg C to +80 deg C, relative humidity no more than 95%, without corrosive gas and at least 15 cm above the ground.
Install the fan out of the reach of children and do not allow children to use this product.
The final interpretation right of this specification belongs to Blauberg.
Life and Maintenance, Warranty
The design life is 50,000 hours, limited by the ball-bearing life at 40 deg C. Actual service life varies with temperature, humidity, installation method, fan load and other operating conditions.
Clean and maintain the fan every 3-6 months according to the operating environment.
The whole-machine warranty period is two years from the delivery date. Quality-related failures are covered; damage caused by improper disassembly, handling, man-made damage, natural disasters or force majeure is excluded.
Download
BL-B133A-EC-00 Product Specification.pdf
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