The backward centrifugal fan listed here carries 110V/230V, power source type Corded Electric, documented exactly as the manufacturer publishes it. Send your target quantity and destination for a firm quotation with current lead times.
Backward-curved blades give this centrifugal fan a non-overloading power curve, meaning the motor cannot be driven past its rating if system resistance drops — the safety margin telecom cabinet cooling depends on, since filter condition changes constantly. EC drive adds electronic speed control without efficiency loss at part load. 250mm impeller in aluminium alloy or plastic, 2490-2800rpm on 110V or 230V, with OEM, ODM and OBM production.
Key Features of This Backward Centrifugal Fan
- Model Number: FLW250-77
- Power Source Type: Corded Electric
- Voltage: 110V/230V
- Material: Plastic, Stainless Steel
- Blade Material: Aluminum Alloy/Plastic
- Noise Level: 40 dB and above
Technical Specifications
| Mounting | Free Standing |
|---|---|
| Power Source Type | Corded Electric |
| Noise Level | 40 dB and above |
| Voltage | 110V/230V |
| Material | Plastic, Stainless Steel |
| Speed | 2490, 2800 |
| Blade Material | Aluminum Alloy/Plastic |
| Customized Support | OEM, ODM, OBM |
| Warranty | 1 Year |
| After-Sales Service Provided | Video Technical Support |
| Model Number | FLW250-77 |
| Place Of Origin | Henan, China |
| Selling Units | Single item |
|
Types
|
133-500mm EC 110V/230V plastic telecom backward centrifugal blower fan high pressure EC centrifugal fan
|
||||||
|
Mainly Applications
|
AIR PURIFIER / Server Cooling & Ventilation / Grow Tent /Ventilation SYSTEM/ Equipments Cooling /Refrigerator ,etc;ventilation fan
cooling;ventilation exhaust fans. |
||||||
|
Voltage Ranges
|
110V/230V
|
||||||
|
Frequency
|
50/60 Hz
|
||||||
|
Diamter
|
133-500mm ( impeller diameters )
|
||||||
|
Motor Types
|
External Rotor Motor
|
||||||
|
Max.ambient Temp
|
-25℃～ +60℃ ;Applicable altitude range：＜1000m
|
||||||
|
Certificating
|
CE ,RoHS, ISO19001,ISO 14001
|
||||||
|
Protection Level
|
IP54
|
||||||
|
Electronic Protection
|
Current limiting protection, Over-temperature protection,Over-current protection,Locked-rotor protection,Soft start
|
||||||
Yes, our catalogs are available on the website: www.demma.com.cn,
and we can provide free of charge samples for testing before mass order.
2.ls the price negotiable?
Yes, it is negotiable, but it is subject to your order quantity
3.How should I pay for the order?
Pay by trade assurace through alibaba, pay by Paypal, WesternUnion, TT are acceptable.
4.Could we make our own brand ?
Yes, we are flexible in OEM labeling and we can give design support.
5.How long is the production time?
Usually, it takes about 2-3 weeks upon receipt of order advance payment.
Frequently Asked Questions
What is the minimum order quantity for this backward centrifugal fan?
Minimum order quantity is set per configuration and trial quantities can usually be arranged. Send your target volume with an enquiry and a quotation will follow with current lead times.
What warranty covers this backward centrifugal fan?
A 1 Year warranty is supplied as standard. Spare parts and technical support remain available beyond the warranty period.
Can it be built for my local voltage?
The standard specification is 110V/230V. Alternative voltage and frequency builds are available when confirmed at order stage.
Do you accept OEM or custom branding?
Yes. Custom logo, colour, packaging and specification changes are accepted on qualifying volumes. Supply your artwork and technical requirements with the enquiry.
How long is production and delivery?
Stocked configurations normally ship in 7-15 days. Customised or high-volume orders are typically produced in 25-35 days, confirmed at order.
About the Manufacturer
This backward centrifugal fan is produced by Zhengzhou Dema Electric Co., Ltd.. Browse the full Zhengzhou Dema Electric Co., Ltd. range on HVACR Nexus.
See more in Blowers on HVACR Nexus.
