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 PB3N250B48-TZ0 250mm IP55 EC-DC Backward Curved Centrifugal Fan (Φ250×99mm) is specifically engineered for fresh air ventilation equipment, EV charging pile cooling systems, energy storage container ventilation, and electrical enclosure cooling — delivering safe extra-low voltage (SELV) high-efficiency energy-saving performance in demanding industrial scenarios requiring ultra-high static pressure with waterproof and dustproof protection.
Rated at 48V DC (operating range 36–57V DC) and powered by advanced brushless DC (BLDC) / EC motor technology, this backward curved centrifugal fan delivers an industry-leading 1,350 m³/h (794.48 CFM) of ultra-high airflow and a top-tier 900 Pa (3.60 inH2O) of static pressure at 2,700 RPM.
PBM provides more than just standard fan components — we offer complete industrial ventilation solutions throughout the entire R&D process. Our sales team (with 5+ years of industry experience) will analyze your requirements, and our engineering team (with 8+ years of experience) will assist you in selecting the right model. From prototype testing to mass production delivery, our technical team provides full engineering support. We also support a wide range of customization services.
Choose the PB3N250B48-TZ0 for a high static pressure, low noise, IP55 EC-DC backward curved centrifugal fan for your most demanding fresh air, EV charging, energy storage, and enclosure cooling applications.
General Characters
|
1-1 |
Rated Voltage |
48 VDC |
|
1-2 |
Operating Voltage |
36~57 VDC |
|
1-3 |
Rated Speed |
2700 RPM |
|
1-4 |
Input Current |
3.2 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 (48VDC)
Temperature-----Room temperature
Humidity---------65%RH
Outline Drawing
Note:
1.Connection line: Red, Blue(AWG18#)； Yellow, White(AWG24#)
2.DC: Red=Voltage Intput 48VDC, Yellow=0-10VDC/PWM, White=FG, Blue=GND;
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