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| Quantity: | |
|---|---|
Model | Voltage [V] | Frequency / Max Current [Hz] / [A] | Speed [rpm] | Max Power [W] | Max Airflow [m3/h] | Noise [dB(A)] | |
 | B133P.E001 | 230 | 50/60 | 5220 | 88 | 450 | 68 |
 | B175P.E002 | 230 | 50/60 | 5030 | 166 | 880 | 69 |
 | B190P.E002 | 230 | 50/60 | 4230 | 150 | 810 | 70 |
 | B225P.E003 | 230 | 50/60 | 3060 | 215 | 1455 | 71.1 |
 | B250P.E001 | 230 | 50/60 | 3170 | 295 | 1505 | 73.1 |
Model | A | B | C | D | E | F | G | H | I | J | K | L | M |
B133P.E001 | Ø134 | Ø95 | Ø72 | Ø93.5 | 28 | 54.8 | 84 | 2 | 12.8 | Ø118 | Ø129 | Ø105 | 4-M4 |
B175P.E002 | Ø175 | Ø95 | Ø72 | Ø132 | 28 | 63 | 69 | 2 | 14 | Ø158 | Ø170 | Ø105 | 4-M4 |
B190P.E002 | Ø190 | Ø95 | Ø72 | Ø133 | 28 | 63 | 69 | 4.5 | 14 | Ø158 | Ø170 | Ø105 | 4-M4 |
B225P.E003 | Ø225 | Ø116 | Ø92 | Ø154 | 35 | 89.5 | 99 | 3 | 28 | Ø210 | Ø224 | Ø125 | 4-M4 |
B250P.E001 | Ø251 | Ø116 | Ø92 | Ø172.5 | 35 | 85.4 | 99 | 3 | 31 | Ø240 | Ø255 | Ø125 | 4-M5 |
 Airflow-static pressure curved (P-Q) |  Airflow-power curved (N-Q) |
EC Backward-curved Centrifugal Fan Series Core Selling Points |
This series consists of 230V EC backward-curved centrifugal fans, integrating high efficiency, energy saving, wide frequency compatibility, strong airflow, stable operation and easy installation. Suitable for fresh air purification, HVAC, equipment cooling, industrial ventilation and other applications, they are the efficient and reliable choice for medium-to-high-end ventilation systems.
1. High-efficiency EC Drive, More Economical Energy Saving
Adopts 230V EC electronically commutated motor, with efficiency far exceeding ordinary AC fans. Low power consumption and low heat generation significantly reduce energy costs for long-term operation. Power range: 88–295W, with efficient and stable working conditions.
2. Wide Voltage & Frequency Compatibility, Strong Universality
Supports dual frequency 50/60Hz and 230V mainstream power supply, directly applicable to power grids in most regions worldwide. Ideal for equipment export and multi-scenario compatibility without additional frequency conversion modification.
3. Strong Airflow & High Static Pressure, Powerful Ventilation
Airflow range: 450–1505m³/h. Backward-curved impeller with optimized aerodynamics ensures smooth airflow and low pressure loss, maintaining high-efficiency output even under high static pressure to meet the air supply demands of large-flow and high-resistance systems.
4. Low Noise & Stable Operation, Environmentally Friendly
Optimized air path and dynamic balance design, noise controlled at 68–73.1dB(A). Low vibration and low wind noise even at high airflow, suitable for indoor equipment and commercial environments with high quiet requirements.
5. Complete Specifications, Flexible Selection
Covers five models: EC133/EC175/EC190/EC225/EC250, speed range: 3060–5220rpm. Can match different requirements of airflow, static pressure and installation space, with high flexibility in model selection.
6. Standardized Structure, Easy Installation
Unified standard dimensions and 4-M4/4-M5 standard mounting holes. Compact and robust structure, high integration and easy replacement, suitable for quick assembly in built-in equipment, cabinets, air conditioning units and purification units.
7. High Reliability & Long Service Life
Backward-curved impeller is dust-resistant and self-cleaning, with high dynamic balance accuracy for motor and impeller. Supports long-time continuous operation, strong stability and low maintenance cost.
