Do you provide technical support?

Yes. We offer full technical support including product selection, installation guidance, commissioning and after-sales troubleshooting.

What is your warranty policy?

We provide a 12-month warranty. We also offer lifelong technical consultation and maintenance services.

Can you ship to our country?

Yes, we have rich experience in international shipping. We can arrange sea freight, air freight or express delivery to most countries and regions.

What payment terms do you accept?

We accept T/T, L/C, Western Union and other commonly used international payment terms. Details can be negotiated.

500kw Internal Bypass Soft Starter Three Phase Motor for Centrifugal Fan

Name: 500kw Internal Bypass Soft Starter Three Phase Motor for Centrifugal Fan
Brand: Zhejiang Gongjiu Technology Co., Ltd.
SKU: 2321298405

Zhejiang, ChinaZhejiang Gongjiu Technology Co., Ltd.

US$774.00

1-49 Unit

US$769.00

50-99 Unit

US$764.00

100+ Unit

Product specifications

external bypass

Sample price:US$774.00/piece.Request sample

Product profile

Customization

Available

Task

Adjust

Structure

Combination

Mathematical Model

Linear

Signal

Continuous

Function

Automatic Control, Protection

Certification

CCC, CE

Condition

New

Customized

Non-Customized

Material

Iron Shell

OEM

Acceptable

Transport Package.

Carton /Wooden Case

Specification.

CE, CCC,

Origin.

China

Transport Package

Carton /Wooden Case

Trademark

GONGJIU DIANLI

Origin

China

HS Code

8536300000

Production Capacity

100000

Key features

Extended Component Lifespan: External bypass contactor allows thyristor to rest, reducing thermal load and extending service life.

Energy Conservation: Low impedance bypass reduces voltage drop and power consumption, improving motor efficiency.

Enhanced Device Security: Protects against reverse EMF damage and isolates main circuit during faults for system reliability.

Smooth Starting Performance: Offers current limiting and voltage ramp starting to reduce impact on grid and mechanical loads.

One-Touch Configuration: Features easy setup with one-touch parameter configuration for 500kW external bypass soft starter.

IP56 Protection Grade: Steel plate shell with IP56 protection grade ensures durability and safety in industrial environments.

Company profile

Importers and ExportersProduct Certification

Zhejiang Gongjiu 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: ≤3.15h

About Our Factory & Business Background

AddressNo. 299, Wei Shi Road, Yueqing Economic Development Zone, Yueqing City, Wenzhou, Zhejiang, China

Plant Area1690 square meters

Number of Employees33

Terms of PaymentT/T, LC

International Commercial Terms(Incoterms)FOB, EXW

Average Lead TimePeak Season Lead Time: one month Off Season Lead Time: one month

Minimum Order Quantity100 pcs

Supply Chain Partners10

Our Production Capability & Technical Expertise

Main ProductsFrequency Converter/Soft Starter/Low Voltage Non-standard Cabinet

Production Lines3

Production MachinesAssembling

QA/QC inspectors2 people

Inspection Type for Finished Products100% inspection(Function inspection)

Inspection Method for Finished ProductsHave instructions and uniformly followed

R&D Engineers2 people

Traceability of Raw MaterialsYes

Own BrandYes

Our Industry Experience & Global Business Record

Year of Establishment2019-08-14

Main MarketsDomestic

Repeat Buyers Choice80%~100%

Number of Foreign Trading Staff2

Overseas Agent/BranchNo

New Products Launched in Last yearNo

Our Certifications, Standards & Industry Recognition

Product CertificationCE

Cooperated with Fortune 500No

Product Q&A

Q:Are you a manufacturer or trading company?

We are a professional manufacturer located in Wenzhou, China, with our own production lines, R&D and technical teams, focusing on soft starters, frequency converters and water supply control cabinets since 2010.

Q:What products do you mainly supply?

Our main products include motor soft starters, frequency converters, variable-frequency constant-pressure water supply control cabinets and related electrical control equipment.

Q:Can you accept OEM / ODM orders?

Yes, we support OEM and ODM services. We can customize products according to your logo, voltage, power, function and cabinet requirements.

Q:What is your MOQ (Minimum Order Quantity)?

We accept trial orders with small MOQ to support your market testing. For detailed quantity, please contact us directly.

Q:What about your quality control?

We carry out strict quality inspection in raw material, production process, aging test, load test and finished product inspection to ensure stable and reliable performance.