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BC-A300C-EC-01 is a 300 mm EC axial fan with an external-rotor EC motor. The product specification verifies 115 VAC, 50/60 Hz operation, 2000 RPM nominal speed, a maximum input power of 150 W, and IP55 protection.
Basic Info
| Model No. | BC-A300C-EC-01 | Fan Type | EC Axial Fan |
| Rated Voltage | 115 VAC | Frequency | 50/60 Hz |
| Phase | 1~ | Operating Mode | S1 |
| Nominal Speed | 2000 RPM | Sound Level | 67 dB(A) |
| Max. Input Power | 150 W | Max. Input Current | 2.4 A |
| Ambient Temperature | −25 °C to 60 °C | Compliance | CCC, CE; all components comply with RoHS |
Technical Description
| Dimensions | 300 × 300 × 101.8 mm | Motor | External-rotor EC motor |
| Impeller Material | Plastic | Bearing | Ball bearings |
| Rotation Direction | Counterclockwise, viewed from the rotor side | Rotor Coating | Powder coating |
| Protection Rating | IP55 | Insulation Class | Class B |
| Motor Protection | Locked-rotor, thermal, over-voltage, under-voltage and over-current protection; soft start | Cable Length | 500 ±20 mm |
| Operating Humidity | 5%–90% RH | Impeller Deviation | Axial ≤0.5 mm; radial ≤0.5 mm |
Product Application
| 1 | Charging Column | 9 | Equipment Cooling Project |
| 2 | Kitchen Smoke Exhaust System | 10 | Ventilation Unit Project |
| 3 | FFU Project | 11 | AHU (Air Handling Unit) Project |
| 4 | Computer Room Cooling | 12 | Air Purifier Project |
| 5 | Air-Conditioned Fan for Rail Transit Carriers | 13 | Heat Exchanger Project |
| 6 | Electrical Appliances | 14 | Telecom Container Project |
| 7 | FanGrid Project | 15 | Data Center Cooling Project |
| 8 | Ventilation Equipment Project | 16 | Control Cabinet Cooling Project |
For ventilation and equipment cooling after system verification.
Air Performance

The product-specification curve shows the relationship between static pressure P (Pa) and airflow Q (m³/h). The plotted curve covers approximately 0–2,500 m³/h and 0–160 Pa.
Overal Dimmensions

Overall dimensions: 300 × 300 × 101.8 mm. The outline drawing shows a 500 ±20 mm cable, Ø300 impeller diameter, Ø58 and Ø90 reference diameters, 4-M4 mounting points, 4-M6 mounting points, and an M4 ground hole.
Electrical Connection

| PE | Green/Yellow | Protective earth |
| U1 / L | Brown | Power supply, live wire |
| U2 / N | Blue | Power supply, neutral wire |
| U4 / +10V | Red | External +10 VDC output |
| U5 / Speed Control | Yellow | 0–10 V and PWM compatible input; maximum PWM amplitude 10 V |
| U6 / Signal Feedback | White | Speed-output signal |
| U7 / GND | Blue | Control-line ground |
The fan provides a speed-output signal. Vfg and the pull-up resistor are supplied externally by the customer. Vfg = (3–30) VDC; R ≥ 1000 × (Vfg) Ω.
Notes
- Connect the power and control lines strictly according to the wiring diagram to prevent fan damage.
- 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 start-up, check the speed-control input voltage and connections. Do not touch the impeller or rotor after power is applied.
- The fan may take several seconds to start. Do not touch the impeller or rotor when power is applied or during low-speed operation.
- People without appropriate safety supervision, including children, must not use this product.
- If the power cable is damaged, it must be replaced by the manufacturer.
- The motor must not be operated without the impeller or a load.
- For storage after unpacking, repack the product and store it in a clean, ventilated, non-corrosive environment at −40 °C to +80 °C, at no more than 95% relative humidity and at least 15 cm above the ground.
- Read this technical specification carefully before use.
Download
BC-A300C-EC-01 Technical Specification.pdf
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