BM-A Series Backward-curved Centrifugal Fan AC280/310/320/355/400/450/520/560mm

	Model	Voltage [V]	Frequency [Hz]	Speed [rpm]	Max Power [W]	Max Airflow [m3/h]	Noise [dB(A)]
	B280M.A007	230	50	2575	270	1770	74.7
	B310M.A001	115	60	1690	169	1825	67
	B320M.A001	230	60	1550	176	1980	69.6
		230	50	1390	130	1770	67.4
	B320M.A003	115	60	1585	180	1870	68
	B320M.A006	240	50	1550	169	1278	69
		240	50	1370	137	996	66
	B355M.A003	230	60	1635	360	2890	73.8
		230	50	1425	255	2510	69.9
	B355M.A002	115	60	1605	370	2855	73
	B355M.A004	380	50	1405	235	2535	70
	B355M.A012	400	60	1650	434	3373	74
		380	50	1420	294	2892	70
	B400M.A001	380	50	1440	562	5034	72.8
	B400M.A004	230	50	1445	480	4430	71.5
	B450M.A004	380	50	1405	755	5867	78.8
	B450M.A005	230	50	1405	790	5900	78.8
	B520M.A005	380	50	1365	1485	8300	80
	B520M.A003	380	50	1365	1485	8300	80
	B560M.A001	380	50	1310	2368	12315	83.9

DIMENSION

Airflow-static pressure curve (P-Q)

Airflow-power curve (N-Q)

Core Selling Points

This series features large-size AC backward-curved centrifugal fans, covering industrial-grade models from 280mm to 560mm. Highlighted by ultra-large air volume, high static pressure, wide voltage compatibility and stable durability, they are specially designed for high-power ventilation scenarios such as large HVAC systems, central air conditioners, industrial dust removal, fresh air purification and cabinet cooling.

1.Industrial-grade Large Air Volume & High Static Pressure for Long-distance Air Supply

Adopting professional backward-curved blade structure, it features high aerodynamic efficiency, low wind resistance and no power overload for safer operation. Air volume ranges from 996 to 12315m³/h (max. 12315m³/h), with sufficient static pressure and non-attenuated long-distance air supply, perfectly suitable for large systems including central air conditioners, industrial ventilation, fresh air purification and dust removal & refrigeration.

2.Wide Voltage & Dual Frequency for Global Project Application

Supports multiple voltages: 115V/230V/240V/380V/400V and dual frequencies: 50/60Hz, directly compatible with domestic and overseas equipment and power grids. Unified specifications reduce stock preparation and greatly lower inventory costs for engineering and foreign trade projects.

3.Optimized Silent Design for Quieter Large Air Volume Operation

Triple noise reduction optimization of air duct, impeller and structure, with noise controlled at 66–83.9dB(A). Large-size industrial models maintain stable and low noise under full-load operation, meeting silence requirements of commercial buildings, industrial workshops, precision equipment rooms and other places.

4.Full-size Coverage & Standardized Universal Installation

Covers mainstream industrial sizes: 280/310/320/355/400/450/520/560mm. Equipped with standardized mounting holes, flanges and fixing screw positions, it has a compact and robust structure, convenient replacement and efficient integration, suitable for installation of various large units and equipment.

5.High Power & Long Service Life for 24-hour Stable Operation

Power ranges from 130–2368W, equipped with industrial-grade motors and high-strength impellers, featuring fatigue resistance, low loss and long service life. Stable rotating speed (1310–2575rpm) enables continuous high-load operation, adaptable to harsh working conditions such as industrial HVAC, large-scale refrigeration, fresh air dust removal and cabinet cooling.