PA3N250B48H
Aluminum Fan
Aluminum Alloy
Axial Fan
DC
Ceiling Fan
CE
0~10VDC/PWM Speed Control, Tach Output
Telecom Station, Heat Exchanger, Free Cooling Unit
Direct Cooling
2.5 Kg
5 Years
Aluminium Sheet
NMB Ball Bearing
3-Days for Sample
4-Weeks for Mass Production
48VDC
36~57 VDC
2750 Rpm
2.4 a
115.2 W
1118.15 Cfm / 1900 M3/H
PBM
5PCS/Carton, 90PCS/Pallet
CE
Suzhou
84145199
Product Description
OEM DC Vortex Centrifugal Blowers Axial Fan with Aluminum Alloy Material
Model:PA3N250B24H / PA3N250B48H
PBM Motor and Fan is a China mainland manufacturer and EC technology consulting company offering an extensive range of EC(Electronically Commutated) motors, fans and solutions, investing in the latest developing, manufacturing and technical equipment with in-depth processes & procedures. Our main products are EC fans, including EC axial fans, EC centrifugal fans and EC blowers. We do both AC and DC current type. And EC Motor is the core technology of our products.
Eletronically Commutated Motors(EC Motors)also known as Brushless DC Motors(BLDC) are synchronous electric motors powered by direct-current(DC) electricity and having electronic commutation systems,rather than mechanical commutators and brushes.The current-to-torque and voltage-to-speed relationships of BLDC motors are linear.
PBM fans are widely used in many fields. For example, axial fan for telecom, backward curved centrifugal fan for air exchanger,(inline duct fan)hydroponic products and FFU, forward curved centrifugal fan for air purifier and air conditioning,blower for kitchen.
Model: PA3N250B24H
1.General CharactersRated Voltage | 24VDC |
Operating Voltage | 16~28 VDC |
Rated Speed | 2750 RPM |
Input Current | 4.8 A |
Input Power | 115.2 W |
Air Flow | 1118.15 CFM / 1900 m3/H |
Static Pressure | 0.88 inH2O / 220 Pa |
Acoustical Noise | 69 dB(A) |
Life Expectance | 50,000 Hours(L10) At 40ºC room, humidity 15%~65%RH. |
Insulation Class | Class B |
Motor Protection | Locked rotor protection Polarity protection Automatic restart capability |
Speed Control | Control input 0~10VDC / PWM |
Protection Type | IP44 |
Signal Output | FG (Frequency Generator) |
1.General Characters
Rated Voltage | 48VDC |
Operating Voltage | 36~57 VDC |
Rated Speed | 2750 RPM |
Input Current | 2.4 A |
Input Power | 115.2 W |
Air Flow | 1118.15 CFM / 1900 m3/H |
Static Pressure | 0.88 inH2O / 220 Pa |
Acoustical Noise | 69 dB(A) |
Life Expectance | 50,000 Hours(L10) At 40ºC room, humidity 15%~65%RH. |
Insulation Class | Class B |
Motor Protection | Locked rotor protection Polarity protection Automatic restart capability |
Speed Control | Control input 0~10VDC / PWM |
Protection Type | IP44 |
Signal Output | FG (Frequency Generator) |
Dimension | Ø250mm X 80mm (see dimension drawing) |
Material of Impeller | Cold rolled steel sheet |
Number of Blades | 7 |
Bearing System | NMB ball bearing |
Lead Wire | AC(AWG20#),DC(AWG22 #) |
Operating Temperature | -25ºC to 60ºC |
Storage Temperature | -40ºC to 75ºC |
Operating Humidity | 5% to 90% RH |
Storage Humidity | 5% to 95% RH |

Testing Condition
Input Voltage----Operating voltage (24VDC)
Temperature-----Room temperature
Humidity---------65%RH
5.Outline Drawing

Note:
1.Connection line:DC(4×AWG22#)
2.DC: Red=Voltage Intput 24VDC, Yellow=0-10VDC/PWM, White=FG, Blue=GND;
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FAQ
Frequently Asked QuestionQ: What are electronically commutated motors?
Electronically Commutated motors are brushless DC motors where the direction of the electric current is switched using electronic controllers. As the switching of the current is technically known as 'commutating', brushless motors are also called 'electronically commutated' motors. EC motors provide the advantages of brushed DC motors in terms of the ability to have variable speed control, but without the drawbacks of brushes.
Q: What are the advantages of EC motors?
EC motors are very high efficiency electric motors (80%) and maintain a high efficiency level at part speed. This means that in most cases they use less than one third to half of the electricity used by traditional induction motors, which in turn translates into lower operating costs and short payback periods. As EC motors have a higher efficiency this ensures that the motors run cooler in application which ensures a longer life for the motor.
In terms of speed control and features, because the motor's operation is controlled by software, EC motors allow customers to optimize and integrate the motor, fan and controller with the application, and to include features like data communications, constant volume control, variable speed.
Features & Advantages
Q: What about cost?
The initial outlay for an EC motor is more expensive than the traditional induction / shaded pole motors and this is mainly due to the electronic components required to drive the commutation. In recent years the cost of electronic components has reduced dramatically as volumes increase.
The huge energy savings provided by EC motors, mean equally large savings in operating costs, which in turn translate in payback periods as short as a few months combined with a longer life expectancy.
In our case, together with high energy savings, low use of raw material, low part count and simple electronics, have allowed us to make our motor price very competitive.
Q: How are EC motors 'sustainable'?
The huge energy savings provided by our EC motors directly translate into large carbon emissions savings.
By using an EC motors in your application we are able to assist our customers in dramatically reducing the air pollution (CO2) generated by their applications. This is due to the motors high efficency & low energy costs which helps to preserve the world for a 'greener' future.
EC Motors are designed & manufactured using 70% less copper and 80% less steel than traditional induction and shaded pole motors which has a dramatic reduction in environmental impact in producing these raw material components.
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