Key specification for this centrifugal fan: 24V, 48V, 220/230V, blade material Aluminum alloy. Everything below is reproduced from the factory data sheet. Made by Zhongshan Pengfei Electrical Appliance Co., Ltd. (8 years on the platform, factory-assessed). For a binding price and lead time, send the volume you need and where it ships to.
Key Features of This Centrifugal Fan
- Model Number: EC92-B250, EC102-B250, YWF.B2S-250-077AB00, YWF.B4S-250-077AB00, DC92-B250
- Voltage: 24V, 48V, 220/230V
- Rated Voltage: 24V, 48V, 220/230 V
- Blade Material: Aluminum alloy
- Impeller Material: Aluminum alloy
- Speed: 2800RPM, 3300RPM
Technical Specifications
| Mounting | Duct Fan |
|---|---|
| Voltage | 24V, 48V, 220/230V |
| Blade Material | Aluminum alloy |
| Electric Current Type | AC/EC/DC |
| Warranty | 1 Year |
| After-Sales Service Provided | Online support |
| Place Of Origin | Guangdong, China |
| Brand Name | Dailor |
| Model Number | EC92-B250, EC102-B250, YWF.B2S-250-077AB00, YWF.B4S-250-077AB00, DC92-B250 |
| Impeller Material | Aluminum alloy |
| Protection Class | IP42-44 |
| Insulation Class | B |
| Diameter | 250mm |
| Rated Voltage | 24V, 48V, 220/230 V |
| Frequency | 50/60Hz |
| Speed | 2800RPM, 3300RPM |
| Noise | 82dB, 74dB |
| Applicable Temp | -20~+60 ℃ |
| Bearing | ball bearing |
| Packaging Details | 1. 10-20pcs per carton, it’s based on the model you need. 2. Foam packing or with inner box, it’s based on customers requirement. |
| Port Of Dispatch | Xiaolan Port or Zhongshan Port |
| Selling Units | Single item |
| Single Package Size | 25X25X16.6 cm |
| Single Gross Weight | 2.1 kg |
| Supply Ability | 200000 pieces per Month |
Product Details
AC Nomenclature


AC 250mm Backward centrifugal fan
| Volatge | Frequency | Current | Input Power | Speed | Capacitor | Air Flow | Noise | Curve No. | Operating Temp | |
| Model No. | V | Hz | A | W | RPM | μF | m³/h/CFM | dB(A) | # | Min/Max(℃) |
| YWF.B2S-250-077AB00 | 220/230 | 50 | 0.76 | 167 | 2620 | 7 | 1300/765 | 75 | (3) | -30~+60 |
| YWF.B4S-250-077AB00 | 220/230 | 50 | 0.26 | 50 | 1400 | 2 | 710/410 | 59 | (1) | |
| 220/230 | 60 | 0.26 | 58 | 1650 | 2 | 840/485 | 63 | (2) |


EC/DC Nomenclature


-EC 250mm series 1-


-EC 250mm series 2-




——————————————————————————————————————
-DC 250mm-

- Air purifier
- Ventilating Units
- Air conditioner Terminals
- Air conditioner Fans
- Floor Ventilation
- Heat pumps
- Ground source heat pumps
- Air source heat pumps
- Roof fans
- Filtration
- FFU
- ……

















–Please click on the model you want:
AC Backward centrifugal fan:
133mm Backward Centrifugal Fan 175mm Backward Centrifugal Fan
180mm Backward Centrifugal Fan 190mm Backward Centrifugal Fan
220mm Backward Centrifugal Fan 225*75mm Backward Centrifugal Fan
225*89mm Backward Centrifugal Fan 250mm Backward Centrifugal Fan
280*80mm Backward Centrifugal Fan 280*135mm Backward Centrifugal Fan
315mm Backward Centrifugal Fan 355*144mm Backward Centrifugal Fan
355*169mm Backward Centrifugal Fan
400*147mm Backward Centrifugal Fan with Aluminum alloy impeller
400*188mm Backward Centrifugal Fan with Aluminum alloy impeller
400*188mm Backward Centrifugal Fan with Magnalium alloy impeller
450mm Backward Centrifugal Fan with 6 motor poles three-phase
450mm Backward Centrifugal Fan with 4/6 motor poles single/three-phase
500mm Backward Centrifugal Fan
560mm Backward Centrifugal Fan
EC Backward centrifugal fan:
133mm backward centrifugal fan 175mm backward centrifugal fan 190mm backward centrifugal fan 220mm backward centrifugal fan 225mm backward centrifugal fan 250mm backward centrifugal fan
280mm backward centrifugal fan 310mm backward centrifugal fan
355mm backward centrifugal fan
AC Forward Centrifugal Fan:
120mm Centrifugal blower fan-single inlet 120mm Centrifugal blower fan-double inlets
133mm Centrifugal blower fan-single inlet 133mm Centrifugal blower fan-double inlets
140mm Centrifugal blower fan-single inlet 146mm Centrifugal blower fan-double inlets
150mm Centrifugal blower fan-single inlet
160mm Centrifugal blower fan-single inlet
180mm Centrifugal blower fan-single inlet
200mm Centrifugal blower fan-single inlet
AC Duct Fan:
100mm Inline duct fan 125mm Inline duct fan
150mm Inline duct fan 160mm Inline duct fan
200mm Inline duct fan 250mm Inline duct fan
300mm Inline duct fan 315mm Inline duct fan





Quality Control
From selecting raw material, making motor parts, to assembling final product, Pengfei motor values every detail of the motor producing process. Full sets of equipments and skilled staffs also make the quality control more accurate. 100% test and inspection achieve good quality and satisfy our customers greatly.
FAQ
1. Are you a trade company or a manufacturer?
A: We are manufacturer in China. We have ISO, CCC, ROHS, CE certification. OEM & ODM services are available.
2. What is your MOQ?
A: Our minimum order quantity is 30pcs.
3.What is your delivery date?
A: The delivery date is about 25-40 days after receipt of payment.
4. What is your payment terms?
A: T/T, 30% deposit in advance and 70% balance before shipment.
5. Can you send free samples?
A: Yes, free samples are available, you just need to pay the express fee. You can provide your a/c like DHL, UPS or you can call your courier to pick up from our factory.
Most importantly, all of our products can be customized. Don’t hesitate, contact us to get more info and customize your products.
Ordering and Pricing
- Minimum order quantity: 30 piece
- Volume pricing:
- 30–499 piece: US $40 / piece
- 500–999 piece: US $35 / piece
- 1000+ piece: US $30 / piece
- Ships from: China
- Customization: OEM and ODM accepted on qualifying volumes.
Frequently Asked Questions
What is the minimum order quantity for this centrifugal fan?
The standard minimum order quantity is 30 piece. Trial orders can usually be arranged for buyers evaluating the product before a full production run.
What warranty is provided?
The manufacturer provides a 1 Year warranty. Spare parts and technical support remain available after the warranty period.
Can the centrifugal fan be supplied for my local voltage?
The standard configuration is 24V, 48V, 220/230V. Alternative voltage and frequency builds are available when specified at the time of order.
Do you accept OEM or custom branding?
Yes. Custom logo, colour, packaging and specification changes are accepted on qualifying order volumes. Send your artwork and technical requirements with your enquiry.
How long does production and delivery take?
In-stock configurations typically ship within 7–15 days. Customised or large-volume orders are usually produced in 25–35 days, confirmed on order.
About the Manufacturer
This product is produced by Zhongshan Pengfei Electrical Appliance Co., Ltd., based in China. The company 8 years as a verified Alibaba.com supplier, operates its own manufacturing, passed third-party supplier assessment. Browse the full Zhongshan Pengfei Electrical Appliance Co., Ltd. range on HVACR Nexus.
See more in Centrifugal Fans on HVACR Nexus.

























