FOCUS ON EC FAN ONLY
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
The 280mm DC Backward Curved Centrifugal Fan PB3N280B24L was created especially for Central Ventilation Units in the Ventilation and Purification. The B3N280B24L is particularly suitable for central ventilation systems that must overcome the resistance of long ducts and multiple bends because of its high-efficiency DC brushless motor and backward-curved blade design, which maintain high efficiency over a wide operating range when compared to conventional forward-curved fans. The fan's seamless functioning and noise level of 71 dB(A) under a static pressure of 347 Pa ensure that it will not disturb the interior environment when operating in ceilings or equipment rooms.
PPM specializes in the development and production of superior EC/DC fans and intelligent airflow systems. This product, which supports heat exchange fresh air systems, central air conditioning supply and exhaust fan units, and central ventilation system equipment, is made to satisfy international safety requirements and has earned reputable certifications like CE, UL, and RoHS. When necessary, we may offer OEM customization services. In addition to manufacturing fans, PBM offers airflow solutions for central ventilation systems.
General Characters
|
1-1 |
Rated Voltage |
24 VDC |
|
1-2 |
Operating Voltage |
16~28 VDC |
|
1-3 |
Rated Speed |
1800 RPM |
|
1-4 |
Input Current |
4.8 A |
|
1-5 |
Input Power |
1115.2 W |
|
1-6 |
Air Flow |
1153.46 CFM / 1960 M³/H |
|
1-7 |
Static Pressure |
1.39 inH₂O / 347 Pa |
|
1-8 |
Acoustical Noise |
71 dB(A) |
|
1-9 |
Life Expectancy |
50,000 Hours (L10) At 40℃ room, humidity 15%~65%RH. |
|
1-10 |
Insulation Class |
Class B |
|
1-11 |
Motor Protection |
Locked rotor protection Polarity protection Automatic restart capability |
|
1-13 |
Speed Control |
Control input 0~10VDC / PWM |
|
1-14 |
Protection Type |
IP44 |
|
1-15 |
Signal Output |
FG (Frequency Generator) |
Mechanical Characters
|
2-1 |
Dimension |
Ø280 mm X 125 mm (see dimension drawing) |
|
2-2 |
Material of Impeller |
Galvanized Metal Shell |
|
2-3 |
Number of Blades |
11 |
|
2-4 |
Bearing System |
NMB ball bearing |
|
2-5 |
Lead Wire |
DC (AWG20 #) |
Environmental Characters
|
3-1 |
Operating Temperature |
-25℃ to 60℃ |
|
3-2 |
Storage Temperature |
-40℃ to 75℃ |
|
3-3 |
Operating Humidity |
5% to 90% RH |
|
3-4 |
Storage Humidity |
5% to 95% RH |
Performance Curve
Testing Condition:
Input Voltage----Operating voltage (24VDC)
Temperature-----Room temperature
Humidity---------65%RH
Outline Drawing
Note:
1.Connection line:DC(4×AWG20#)
2.DC: Red=Voltage Intput 24VDC, Yellow=0-10VDC/PWM, White=FG, Blue=GND;
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