What certifications does the product have?

CE, RoHS and CCC on applicable models. Tell us your destination market and we will confirm the certificate for the exact model before you order.

What are the main applications for this fan?

It is used in manufacturing, computers, telecom, HVAC, electrical appliances, floor heating, and air conditioning.

What is the minimum order quantity (MOQ)?

The minimum order quantity is 100 pieces.

What are the payment terms?

Payment terms include LC, T/T, D/P, PayPal, Western Union, and small-amount payment.

What is the lead time for production?

Customized samples typically take 1-3 weeks, and first production batches 30-45 days after sample approval, depending on quantity and configuration.

Is OEM and ODM service available?

Yes, OEM and ODM services are available, including customization from samples, designs, and flexible adjustments.

What is the wire length of the fan?

The standard wire length is 500mm, but it can be customized.

250mm Ec Centrifugal Fan, 115V/220V Backward Curved Centrifugal Fan with Blec Motor, Speed-Controlled Ec Centrifugal Fan for Ahu Systems

Name: 250mm Ec Centrifugal Fan, 115V/220V Backward Curved Centrifugal Fan with Blec Motor, Speed-Controlled Ec Centrifugal Fan for Ahu Systems
Brand: NINGBO LONGWELL ELECTRIC TECHNOLOGY CO., LTD.
SKU: 1995335425

Zhejiang, ChinaNINGBO LONGWELL ELECTRIC TECHNOLOGY CO., LTD.

US$70.00-200.00

100 Pieces

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

Material

Iron

Usage

for Experiment, for Air Conditioner, for Manufacture, for Refrigerate

Model NO.

250mm

Flow Direction

Centrifugal

Pressure

High Pressure

Certification

RoHS, CE, CCC

Fan

Ec Backward Centrifugal Fan

Voltage

115V-230V

Motor Type

BLDC External Rotor Motor

Diameter

250mm

Wire Length

500mm or Customization

Label

OEM / ODM Available

Fan Speed Control

0-10V / PWM

Application

Ventilation, Floor Heating, Cooling

100% Replacement of Ebm / Ziehl Abegg

Delivery Time Short to 19 Days

Transport Package

Standard Exporting Packages

Specification

LWBE250mm Series

Trademark

LONGWELL

Origin

China

HS Code

8415901000

Production Capacity

50000 PCS / Month

Key features

This 250mm EC centrifugal fan uses a BLDC/BLEC external rotor motor across a 85W-840W power range for flexible sizing.

Nominal voltage covers both 115V and 220V EC input at 50/60Hz, simplifying sourcing for single-phase AHU projects in different markets.

Rated up to 1280 m3/h airflow and up to 980 Pa static pressure, sized for mid-capacity AHU and air handling duty.

Locked-rotor, over-current, over-voltage, and reverse polarity protection are built into the motor electronics.

Accepts 0-10VDC or PWM control input for direct integration with your AHU or HVAC control panel wiring.

OEM and ODM customization is available from your samples or drawings; sample lead time is 1-3 weeks, first production batch in 30-45 days.

Company profile

Cooperated with Fortune 500Self-brandedExhibition ExperienceManagement Certification

NINGBO LONGWELL ELECTRIC TECHNOLOGY CO., LTD.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 6 Years CertifiedNearest Port: Ningbo PortAverage Response Time: ≤1.73h

AI-Powered supplier vetting

SummaryThe supplier is a China-based HVACR manufacturer offering OEM/ODM services, product customization, and stated 24/7 after-sales support. It reports annual production capacity for cross-flow, centrifugal, and axial fans, supported by cutting, laser-cutting, bending, rolling, and punching equipment. The supplier holds product, management-system, and social-responsibility certifications, and reports overseas service resources including an overseas warehouse, showroom, agents or branches, and participation in the Climate World trade show. Evidence of innovation is positive through recent new-product development and ODM services. Customer references are also favorable, including cooperation with Fortune 500 companies and an 80%–100% repeat-buyer preference. However, service-management procedures lack supporting records, and no approved supplier list is maintained. Financial information is insufficient to assess credibility because the slices provide only reporting years, not financial performance values.

Supplier typeThe supplier operates from Zhejiang, China, and its stated business scope covers manufacturing and processing of hardware tools, electronic components, plastic products, and mechanical and electrical equipment, along with technology R&D, design, and sales. Its company overview specifically positions it as an HVACR OEM/ODM solution provider.

CertificationsThe supplier reports FCC, CE, RoHS, and other product certifications, ISO9001:2015, ISO45001:2018, and ISO14001 management-system certifications, plus BSCI social-responsibility certification. These certifications provide explicit evidence of compliance and management-system coverage.

After-Sales capabilityThe supplier states that it provides 24/7 after-sales service and offers overseas debugging, maintenance, repair, training, and equipment installation in Russia. It also reports an overseas warehouse, showroom, agents or branches, and trade-show participation; however, the slices do not verify service performance outcomes.

R&D capabilityThe supplier reports new products during the past year, provides ODM services, and lists technology research and development, technical consulting, technology transfer, and design within its business scope. It does not provide an SDK, but that limitation is not sufficient to negate the broader evidence of product and technical R&D capability.

Production capacityReported annual productivity is 200,000 cross-flow fans, 300,000 centrifugal fans, and 200,000 axial fans. The supplier also lists cutting, laser-cutting, bending, rolling-and-bending, and punching equipment, supporting a demonstrated manufacturing base.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. These services are reported both as an R&D/design capability and as a general design-services capability.

Client casesThe supplier reports providing OEM services for well-known brands and having cooperated with Fortune 500 companies. It also reports an 80%–100% repeat-buyer preference, although no customer names, project details, or independently verifiable case records are provided.

Product Q&A

Q:What is the nominal voltage and frequency?

The nominal voltage is 115V/220V (EC) with a frequency of 50/60Hz.

Q:What are the available power input options?

Power input ranges from 85W to 840W, including 85W, 170W, 270W, 540W, 598W, 803W, and 840W.

Q:What speed control methods are supported?

The fan supports 0-10VDC and PWM control inputs for speed adjustment.

Q:What protections are built into the motor?

It includes locked-rotor, over-current, over-voltage, soft start, and reverse polarity protection.

Q:What is the IP rating of the fan?

IP54 is available on applicable models. Tell us the installation environment and we will confirm the IP rating on the exact model datasheet before order.