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 PB3N250B24-TZ0 Φ250×99mm IP55 EC-DC Backward Curved Centrifugal Fan is designed for air handling units (AHU) , fan filter units (FFU) , cleanroom systems , and fresh air ventilation equipment — delivering 1350 m³/h ultra-high airflow and 900 Pa industry-leading static pressure at 24V DC and 2700 RPM with safety extra-low voltage (SELV) and energy-efficient output in demanding ventilation scenarios requiring ultra-high static pressure with waterproof and dustproof protection.
Powered by advanced brushless DC motor technology, this backward curved centrifugal fan delivers 30%–50% energy savings compared to traditional AC induction motors, with 153.6 W input power and 6.4 A current draw.
With over 15 years of expertise in EC/DC motor and fan technologies, PBM provides complete engineering support from demand analysis and model selection to prototype testing and mass production. Customization services are available across multiple dimensions.
Choose the PB3N250B24-TZ0 for a high static pressure, low noise, IP55 EC-DC backward curved centrifugal fan for your most demanding AHU, FFU, cleanroom, and fresh air applications.
General Characters
|
1-1 |
Rated Voltage |
24 VDC |
|
1-2 |
Operating Voltage |
16~28 VDC |
|
1-3 |
Rated Speed |
2700 RPM |
|
1-4 |
Input Current |
6.4 A |
|
1-5 |
Input Power |
153.6W |
|
1-6 |
Air Flow |
794.48 CFM / 1350 M³/H |
|
1-7 |
Static Pressure |
3.60 inH2O / 900 Pa |
|
1-8 |
Acoustical Noise |
70 dB(A) |
|
1-9 |
Life Expectance |
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 |
IP55 |
|
1-15 |
Signal Output |
FG (Frequency Generator) |
Mechanical Characters
|
2-1 |
Dimension |
Ø250 mm X 99 mm (see dimension drawing) |
|
2-2 |
Material of Impeller |
PA66+GF |
|
2-3 |
Number of Blades |
7 |
|
2-4 |
Bearing System |
NMB ball bearing |
|
2-5 |
Lead Wire |
Red, Blue(AWG18#)；Yellow, White(AWG24#)
|
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: Red, Blue(AWG18#)；Yellow, White(AWG24#)
2.DC: Red=Voltage Intput 24VDC, Yellow=0-10VDC/PWM, White=FG, Blue=GND;
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