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The Blauberg GL-B133B-EC-M3 is a 230 VAC EC backward curved centrifugal fan with 0-10 VDC/PWM speed control. It provides a nominal speed of 3800卤5% RPM at free-air conditions, with integrated protection functions and a ball-bearing motor.
| Model | GL-B133B-EC-M3 | Product Type | EC Backward Curved Centrifugal Fan |
| Motor | EC059AC230V040W | Phase | 1~ |
| Nominal Voltage | 230 VAC | Voltage Range | 184-276 VAC |
| Frequency | 50/60 Hz | Data Condition | FA (Free Air) |
| Nominal Speed | 3800±5% RPM | Max. Input Power | 30 W |
| Max. Input Current | 0.23 A | Sound Level | 63 dB(A) |
| Ambient Temperature | -25℃ to +60℃ | Release Date | 7 August 2025 |
ML = Max. load; ME = Max. efficiency; FA = Free Air.
| Fan Size (L*W*H) | 165*165*85 mm | Weight | Not specified |
| Motor Size | 59 | Impeller Material | Plastic |
| Number of Blades | 7 | Rotation | Clockwise, viewed toward rotor |
| Degree of Protection | IP55 | Insulation Class | Class B |
| Operating Mode | S1 | Bearing | Ball bearing |
| Transport / Storage Temperature | -40℃ to +80℃ | Operating Humidity | 5%-90% RH |
| Installation Position | Any | Cable Length | 500±20 mm |
| Control Input | 0-10 VDC / PWM, max. PWM input 10 VDC | Voltage Output | 10 VDC, max. 10 mA |
| Protection Functions | Locked-rotor, thermal, overvoltage, undervoltage and overcurrent protection; soft start | ||
| Conformity | CCC, CE, RoHS | Dielectric Strength | 1800 VAC / 50 Hz, 1 s; leakage current ≤10 mA |
| 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 is measured according to AMCA 210 / GB 1236 installation category A. The values are valid under the specified measuring conditions and may vary with installation conditions. For deviations from the standard configuration, verify the parameters on the installed unit.
| 1 | AC Cable PVC 3XAWG20 |
| 2 | DC Cable PVC 4XAWG24 |
| Line | Connection | Designation | Colour | Function / Assignment |
|---|---|---|---|---|
| Power Line | PE | PE | Green / Yellow | Protective earth |
| Power Line | U1 | L | Brown | Power supply, live wire |
| Power Line | U2 | N | Blue | Power supply, neutral wire |
| Control Line | U4 | +10V | Red | Fixed 10 VDC output, max. 10 mA |
| Control Line | U5 | Speed Control | Yellow | 0-10 V / PWM control input |
| Control Line | U6 | Signal Feedback | White | Tach output, 2 pulses per revolution |
| Control Line | U7 | GND | Blue | Reference ground for control interface |
Speed setting supports full-speed operation, 0-10 VDC voltage control, PWM control (1-10 kHz) and a 10 kw potentiometer. The tach output provides two pulses per revolution.
Note
Connect the power and control lines strictly according to the wiring diagram.
Do not connect the white signal wire directly to the red signal wire or an external DC power supply.
If the fan does not start, check the speed-control input voltage; do not touch the impeller or rotor after power is applied.
The fan takes several seconds to start; do not touch the impeller or rotor while energized or at low speed.
Before power-on, confirm that the motor is installed securely.
Do not pull the power cord; a damaged cord must be replaced by the manufacturer.
Do not drop or impact the motor.
Do not flush the motor.
Consult Blauberg before using customized products outside the agreed operating conditions.
The motor casing may remain hot after operation; take precautions against burns.
Keep debris out of the casing during installation.
Before installation and operation, turn the rotor by hand to confirm there is no collision, interference or jamming.
The motor must not be used without an impeller or load.
Store repackaged units in a clean, ventilated warehouse at -40℃ to +80℃, relative humidity no more than 95%, without corrosive gas and at least 15 cm above the ground.
Install the fan out of children's reach.
The final interpretation of this specification belongs to Blauberg.
Life and maintenance, warranty
The design life is 50,000 hours, limited by ball-bearing life at 40℃; actual service life varies with temperature, humidity, installation, load and other operating conditions.
Clean and maintain the fan every 3-6 months as appropriate for the environment.
The complete unit carries a two-year warranty from the delivery date for failures caused by product quality; damage caused by improper disassembly, handling, man-made damage, natural disasters or force majeure is excluded.
GL-B133B-EC-M3 Product Specification N.pdf
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